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Showing 1–50 of 72 results for author: Ignarra, C

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  1. arXiv:2402.08865  [pdf, other

    hep-ex astro-ph.CO

    New constraints on ultraheavy dark matter from the LZ experiment

    Authors: J. Aalbers, D. S. Akerib, A. K. Al Musalhi, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, A. Baker, S. Balashov, J. Bang, J. W. Bargemann, A. Baxter, K. Beattie, T. Benson, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, E. Bishop, G. M. Blockinger, B. Boxer, C. A. J. Brew , et al. (174 additional authors not shown)

    Abstract: Searches for dark matter with liquid xenon time projection chamber experiments have traditionally focused on the region of the parameter space that is characteristic of weakly interacting massive particles, ranging from a few GeV/$c^2$ to a few TeV/$c^2$. Models of dark matter with a mass much heavier than this are well motivated by early production mechanisms different from the standard thermal f… ▽ More

    Submitted 13 February, 2024; originally announced February 2024.

    Comments: 9 pages, 7 figures

  2. arXiv:2312.02030  [pdf, other

    hep-ex astro-ph.CO

    First Constraints on WIMP-Nucleon Effective Field Theory Couplings in an Extended Energy Region From LUX-ZEPLIN

    Authors: LZ Collaboration, J. Aalbers, D. S. Akerib, A. K. Al Musalhi, F. Alder, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, A. Baker, S. Balashov, J. Bang, J. W. Bargemann, A. Baxter, K. Beattie, T. Benson, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, E. Bishop, G. M. Blockinger , et al. (175 additional authors not shown)

    Abstract: Following the first science results of the LUX-ZEPLIN (LZ) experiment, a dual-phase xenon time projection chamber operating from the Sanford Underground Research Facility in Lead, South Dakota, USA, we report the initial limits on a model-independent non-relativistic effective field theory describing the complete set of possible interactions of a weakly interacting massive particle (WIMP) with a n… ▽ More

    Submitted 26 February, 2024; v1 submitted 4 December, 2023; originally announced December 2023.

    Comments: 17 pages 11 figures

  3. arXiv:2307.15753  [pdf, other

    hep-ex astro-ph.CO

    A search for new physics in low-energy electron recoils from the first LZ exposure

    Authors: The LZ Collaboration, J. Aalbers, D. S. Akerib, A. K. Al Musalhi, F. Alder, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, A. Baker, S. Balashov, J. Bang, J. W. Bargemann, A. Baxter, K. Beattie, P. Beltrame, T. Benson, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, G. M. Blockinger , et al. (178 additional authors not shown)

    Abstract: The LUX-ZEPLIN (LZ) experiment is a dark matter detector centered on a dual-phase xenon time projection chamber. We report searches for new physics appearing through few-keV-scale electron recoils, using the experiment's first exposure of 60 live days and a fiducial mass of 5.5t. The data are found to be consistent with a background-only hypothesis, and limits are set on models for new physics inc… ▽ More

    Submitted 9 September, 2023; v1 submitted 28 July, 2023; originally announced July 2023.

    Comments: 13 pages, 10 figures. See https://tinyurl.com/LZDataReleaseRun1ER for a data release related to this paper

  4. arXiv:2211.17120  [pdf, other

    hep-ex physics.ins-det

    Background Determination for the LUX-ZEPLIN (LZ) Dark Matter Experiment

    Authors: J. Aalbers, D. S. Akerib, A. K. Al Musalhi, F. Alder, S. K. Alsum, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, A. Baker, J. Bang, J. W. Bargemann, A. Baxter, K. Beattie, P. Beltrame, E. P. Bernard, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, G. M. Blockinger, B. Boxer , et al. (178 additional authors not shown)

    Abstract: The LUX-ZEPLIN experiment recently reported limits on WIMP-nucleus interactions from its initial science run, down to $9.2\times10^{-48}$ cm$^2$ for the spin-independent interaction of a 36 GeV/c$^2$ WIMP at 90% confidence level. In this paper, we present a comprehensive analysis of the backgrounds important for this result and for other upcoming physics analyses, including neutrinoless double-bet… ▽ More

    Submitted 17 July, 2023; v1 submitted 30 November, 2022; originally announced November 2022.

    Comments: 25 pages, 15 figures

    Journal ref: Phys. Rev. D 108, 012010 (2023)

  5. arXiv:2210.05859  [pdf, other

    physics.ins-det astro-ph.CO hep-ex

    Improved Dark Matter Search Sensitivity Resulting from LUX Low-Energy Nuclear Recoil Calibration

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, J. Bang, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag , et al. (72 additional authors not shown)

    Abstract: Dual-phase xenon time projection chamber (TPC) detectors have demonstrated superior search sensitivities to dark matter over a wide range of particle masses. To extend their sensitivity to include low-mass dark matter interactions, it is critical to characterize both the light and charge responses of liquid xenon to sub-keV nuclear recoils. In this work, we report a new nuclear recoil calibration… ▽ More

    Submitted 14 October, 2022; v1 submitted 11 October, 2022; originally announced October 2022.

  6. First Dark Matter Search Results from the LUX-ZEPLIN (LZ) Experiment

    Authors: J. Aalbers, D. S. Akerib, C. W. Akerlof, A. K. Al Musalhi, F. Alder, A. Alqahtani, S. K. Alsum, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, S. Azadi, A. J. Bailey, A. Baker, J. Balajthy, S. Balashov, J. Bang, J. W. Bargemann, M. J. Barry, J. Barthel, D. Bauer, A. Baxter , et al. (322 additional authors not shown)

    Abstract: The LUX-ZEPLIN experiment is a dark matter detector centered on a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility in Lead, South Dakota, USA. This Letter reports results from LUX-ZEPLIN's first search for weakly interacting massive particles (WIMPs) with an exposure of 60~live days using a fiducial mass of 5.5 t. A profile-likelihood ratio analysis s… ▽ More

    Submitted 2 August, 2023; v1 submitted 8 July, 2022; originally announced July 2022.

    Comments: 9 pages, 8 figures. See https://doi.org/10.1103/PhysRevLett.131.041002 for a data release related to this paper

    Journal ref: Phys. Rev. Lett. 131, 041002 (2023)

  7. arXiv:2203.02309  [pdf, other

    physics.ins-det astro-ph.CO hep-ex nucl-ex

    A Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino Physics

    Authors: J. Aalbers, K. Abe, V. Aerne, F. Agostini, S. Ahmed Maouloud, D. S. Akerib, D. Yu. Akimov, J. Akshat, A. K. Al Musalhi, F. Alder, S. K. Alsum, L. Althueser, C. S. Amarasinghe, F. D. Amaro, A. Ames, T. J. Anderson, B. Andrieu, N. Angelides, E. Angelino, J. Angevaare, V. C. Antochi, D. Antón Martin, B. Antunovic, E. Aprile, H. M. Araújo , et al. (572 additional authors not shown)

    Abstract: The nature of dark matter and properties of neutrinos are among the most pressing issues in contemporary particle physics. The dual-phase xenon time-projection chamber is the leading technology to cover the available parameter space for Weakly Interacting Massive Particles (WIMPs), while featuring extensive sensitivity to many alternative dark matter candidates. These detectors can also study neut… ▽ More

    Submitted 4 March, 2022; originally announced March 2022.

    Comments: 77 pages, 40 figures, 1262 references

    Report number: INT-PUB-22-003

    Journal ref: J. Phys. G: Nucl. Part. Phys. 50 (2023) 013001

  8. arXiv:2201.05734  [pdf, other

    astro-ph.CO astro-ph.IM hep-ex physics.ins-det

    Fast and Flexible Analysis of Direct Dark Matter Search Data with Machine Learning

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, J. Bang, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, N. Carrara, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, J. Ernst, A. Fan, S. Fiorucci , et al. (75 additional authors not shown)

    Abstract: We present the results from combining machine learning with the profile likelihood fit procedure, using data from the Large Underground Xenon (LUX) dark matter experiment. This approach demonstrates reduction in computation time by a factor of 30 when compared with the previous approach, without loss of performance on real data. We establish its flexibility to capture non-linear correlations betwe… ▽ More

    Submitted 17 October, 2022; v1 submitted 14 January, 2022; originally announced January 2022.

    Journal ref: Phys. Rev. D 106 (2022), 072009

  9. arXiv:2201.02858  [pdf, other

    hep-ex astro-ph.CO astro-ph.IM hep-ph

    Cosmogenic production of $^{37}$Ar in the context of the LUX-ZEPLIN experiment

    Authors: J. Aalbers, D. S. Akerib, A. K. Al Musalhi, F. Alder, S. K. Alsum, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, X. Bai, A. Baker, J. Balajthy, S. Balashov, J. Bang, J. W. Bargemann, D. Bauer, A. Baxter, K. Beattie, E. P. Bernard, A. Bhatti, A. Biekert, T. P. Biesiadzinski , et al. (183 additional authors not shown)

    Abstract: We estimate the amount of $^{37}$Ar produced in natural xenon via cosmic ray-induced spallation, an inevitable consequence of the transportation and storage of xenon on the Earth's surface. We then calculate the resulting $^{37}$Ar concentration in a 10-tonne payload~(similar to that of the LUX-ZEPLIN experiment) assuming a representative schedule of xenon purification, storage and delivery to the… ▽ More

    Submitted 22 March, 2022; v1 submitted 8 January, 2022; originally announced January 2022.

  10. arXiv:2106.06622  [pdf, other

    physics.ins-det astro-ph.IM hep-ex

    Design and production of the high voltage electrode grids and electron extraction region for the LZ dual-phase xenon time projection chamber

    Authors: R. Linehan, R. L. Mannino, A. Fan, C. M. Ignarra, S. Luitz, K. Skarpaas, T. A. Shutt, D. S. Akerib, S. K. Alsum, T. J. Anderson, H. M. Araújo, M. Arthurs, H. Auyeung, A. J. Bailey, T. P. Biesiadzinski, M. Breidenbach, J. J. Cherwinka, R. A. Conley, J. Genovesi, M. G. D. Gilchriese, A. Glaenzer, T. G. Gonda, K. Hanzel, M. D. Hoff, W. Ji , et al. (24 additional authors not shown)

    Abstract: The dual-phase xenon time projection chamber (TPC) is a powerful tool for direct-detection experiments searching for WIMP dark matter, other dark matter models, and neutrinoless double-beta decay. Successful operation of such a TPC is critically dependent on the ability to hold high electric fields in the bulk liquid, across the liquid surface, and in the gas. Careful design and construction of th… ▽ More

    Submitted 11 June, 2021; originally announced June 2021.

    Comments: 23 pages, 20 figures, to be submitted to Nuclear Instruments and Methods in Physics Research Section A. Corresponding authors: rlinehan@stanford.edu and mannino2@wisc.edu

  11. arXiv:2104.13374  [pdf, other

    physics.ins-det nucl-ex

    Projected sensitivity of the LUX-ZEPLIN (LZ) experiment to the two-neutrino and neutrinoless double beta decays of $^{134}$Xe

    Authors: The LUX-ZEPLIN, Collaboration, :, D. S. Akerib, A. K. Al Musalhi, S. K. Alsum, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araujo, J. E. Armstrong, M. Arthurs, X. Bai, J. Balajthy, S. Balashov, J. Bang, J. W. Bargemann, D. Bauer, A. Baxter, P. Beltrame, E. P. Bernard, A. Bernstein, A. Bhatti, A. Biekert , et al. (172 additional authors not shown)

    Abstract: The projected sensitivity of the LUX-ZEPLIN (LZ) experiment to two-neutrino and neutrinoless double beta decay of $^{134}$Xe is presented. LZ is a 10-tonne xenon time projection chamber optimized for the detection of dark matter particles, that is expected to start operating in 2021 at Sanford Underground Research Facility, USA. Its large mass of natural xenon provides an exceptional opportunity t… ▽ More

    Submitted 22 November, 2021; v1 submitted 26 April, 2021; originally announced April 2021.

    Comments: Version accepted for publication in Phys. Rev. C

  12. arXiv:2102.11740  [pdf, other

    hep-ex astro-ph.CO hep-ph

    Projected sensitivities of the LUX-ZEPLIN (LZ) experiment to new physics via low-energy electron recoils

    Authors: The LZ Collaboration, D. S. Akerib, A. K. Al Musalhi, S. K. Alsum, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, X. Bai, J. Balajthy, S. Balashov, J. Bang, J. W. Bargemann, D. Bauer, A. Baxter, P. Beltrame, E. P. Bernard, A. Bernstein, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch , et al. (172 additional authors not shown)

    Abstract: LUX-ZEPLIN (LZ) is a dark matter detector expected to obtain world-leading sensitivity to weakly interacting massive particles (WIMPs) interacting via nuclear recoils with a ~7-tonne xenon target mass. This manuscript presents sensitivity projections to several low-energy signals of the complementary electron recoil signal type: 1) an effective neutrino magnetic moment and 2) an effective neutrino… ▽ More

    Submitted 18 May, 2021; v1 submitted 23 February, 2021; originally announced February 2021.

    Comments: v2 updates exclusion sensitivities from single-sided to two-sided

  13. Constraints on Effective Field Theory Couplings Using 311.2 days of LUX Data

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, J. Bang, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag, M. G. D. Gilchriese , et al. (72 additional authors not shown)

    Abstract: We report here the results of an Effective Field Theory (EFT) WIMP search analysis using LUX data. We build upon previous LUX analyses by extending the search window to include nuclear recoil energies up to $\sim$180 keV$_{nr}$, requiring a reassessment of data quality cuts and background models. In order to use a binned Profile Likelihood statistical framework, the development of new analysis tec… ▽ More

    Submitted 15 September, 2021; v1 submitted 13 February, 2021; originally announced February 2021.

    Comments: 19 Pages, 10 Figures, 4 Table

    Journal ref: Phys. Rev. D 104, 062005 (2021)

  14. arXiv:2101.08753  [pdf, other

    astro-ph.IM physics.ins-det

    Enhancing the sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment to low energy signals

    Authors: D. S. Akerib, A. K. Al Musalhi, S. K. Alsum, C. S. Amarasinghe, A. Ames, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, X. Bai, J. Balajthy, S. Balashov, J. Bang, J. W. Bargemann, D. Bauer, A. Baxter, P. Beltrame, E. P. Bernard, A. Bernstein, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, G. M. Blockinger , et al. (162 additional authors not shown)

    Abstract: Two-phase xenon detectors, such as that at the core of the forthcoming LZ dark matter experiment, use photomultiplier tubes to sense the primary (S1) and secondary (S2) scintillation signals resulting from particle interactions in their liquid xenon target. This paper describes a simulation study exploring two techniques to lower the energy threshold of LZ to gain sensitivity to low-mass dark matt… ▽ More

    Submitted 21 January, 2021; originally announced January 2021.

    Comments: 14 pages, 6 figures

  15. arXiv:2011.09602  [pdf, other

    hep-ex astro-ph.CO astro-ph.IM physics.ins-det

    Improving sensitivity to low-mass dark matter in LUX using a novel electrode background mitigation technique

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, J. Bang, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag , et al. (73 additional authors not shown)

    Abstract: This paper presents a novel technique for mitigating electrode backgrounds that limit the sensitivity of searches for low-mass dark matter (DM) using xenon time projection chambers. In the LUX detector, signatures of low-mass DM interactions would be very low energy ($\sim$keV) scatters in the active target that ionize only a few xenon atoms and seldom produce detectable scintillation signals. In… ▽ More

    Submitted 18 November, 2020; originally announced November 2020.

    Comments: 14 pages, 13 figures

    Journal ref: Phys. Rev. D 104, 012011 (2021)

  16. arXiv:2006.02506  [pdf, other

    physics.ins-det hep-ex

    The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs

    Authors: D. S. Akerib, C. W. Akerlof, D. Yu. Akimov, A. Alquahtani, S. K. Alsum, T. J. Anderson, N. Angelides, H. M. Araújo, A. Arbuckle, J. E. Armstrong, M. Arthurs, H. Auyeung, S. Aviles, X. Bai, A. J. Bailey, J. Balajthy, S. Balashov, J. Bang, M. J. Barry, D. Bauer, P. Bauer, A. Baxter, J. Belle, P. Beltrame, J. Bensinger , et al. (365 additional authors not shown)

    Abstract: LUX-ZEPLIN (LZ) is a second-generation direct dark matter experiment with spin-independent WIMP-nucleon scattering sensitivity above $1.4 \times 10^{-48}$ cm$^{2}$ for a WIMP mass of 40 GeV/c$^{2}$ and a 1000 d exposure. LZ achieves this sensitivity through a combination of a large 5.6 t fiducial volume, active inner and outer veto systems, and radio-pure construction using materials with inherent… ▽ More

    Submitted 28 February, 2022; v1 submitted 3 June, 2020; originally announced June 2020.

    Comments: 45 pages (79 inc. tables), 7 figures, 9 tables

    Journal ref: The European Physical Journal C, Volume 80, Article number: 1044 (2020)

  17. Investigation of background electron emission in the LUX detector

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag, M. G. D. Gilchriese, C. Gwilliam , et al. (71 additional authors not shown)

    Abstract: Dual-phase xenon detectors, as currently used in direct detection dark matter experiments, have observed elevated rates of background electron events in the low energy region. While this background negatively impacts detector performance in various ways, its origins have only been partially studied. In this paper we report a systematic investigation of the electron pathologies observed in the LUX… ▽ More

    Submitted 13 October, 2020; v1 submitted 16 April, 2020; originally announced April 2020.

    Comments: 17 pages, 13 figures

    Journal ref: Phys. Rev. D 102, 092004 (2020)

  18. arXiv:2004.06304  [pdf, other

    physics.ins-det hep-ex nucl-ex

    Discrimination of electronic recoils from nuclear recoils in two-phase xenon time projection chambers

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag, M. G. D. Gilchriese , et al. (72 additional authors not shown)

    Abstract: We present a comprehensive analysis of electronic recoil vs. nuclear recoil discrimination in liquid/gas xenon time projection chambers, using calibration data from the 2013 and 2014-16 runs of the Large Underground Xenon (LUX) experiment. We observe strong charge-to-light discrimination enhancement with increased event energy. For events with S1 = 120 detected photons, i.e. equivalent to a nuclea… ▽ More

    Submitted 9 December, 2020; v1 submitted 14 April, 2020; originally announced April 2020.

    Comments: 29 pages, 33 figures; minor typos corrected, references updated

    Journal ref: Phys. Rev. D 102, 112002 (2020)

  19. An Effective Field Theory Analysis of the First LUX Dark Matter Search

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag, M. G. D. Gilchriese, C. Gwilliam , et al. (72 additional authors not shown)

    Abstract: The Large Underground Xenon (LUX) dark matter search was a 250-kg active mass dual-phase time projection chamber that operated by detecting light and ionization signals from particles incident on a xenon target. In December 2015, LUX reported a minimum 90% upper C.L. of 6e-46 cm^2 on the spin-independent WIMP-nucleon elastic scattering cross section based on a 1.4e4 kg*day exposure in its first sc… ▽ More

    Submitted 24 March, 2020; originally announced March 2020.

    Comments: 11 pages, 6 figures

    Journal ref: Phys. Rev. D 103, 122005 (2021)

  20. Simulations of Events for the LUX-ZEPLIN (LZ) Dark Matter Experiment

    Authors: The LUX-ZEPLIN Collaboration, :, D. S. Akerib, C. W. Akerlof, A. Alqahtani, S. K. Alsum, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, X. Bai, J. Balajthy, S. Balashov, J. Bang, D. Bauer, A. Baxter, J. Bensinger, E. P. Bernard, A. Bernstein, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, K. E. Boast , et al. (173 additional authors not shown)

    Abstract: The LUX-ZEPLIN dark matter search aims to achieve a sensitivity to the WIMP-nucleon spin-independent cross-section down to (1--2)$\times10^{-12}$\,pb at a WIMP mass of 40 GeV/$c^2$. This paper describes the simulations framework that, along with radioactivity measurements, was used to support this projection, and also to provide mock data for validating reconstruction and analysis software. Of par… ▽ More

    Submitted 23 June, 2020; v1 submitted 25 January, 2020; originally announced January 2020.

    Comments: 24 pages, 19 figures; Corresponding Authors: A. Cottle, V. Kudryavtsev, D. Woodward

  21. Projected sensitivity of the LUX-ZEPLIN experiment to the $0νββ$ decay of $^{136}$Xe

    Authors: D. S. Akerib, C. W. Akerlof, A. Alqahtani, S. K. Alsum, T. J. Anderson, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, X. Bai, J. Balajthy, S. Balashov, J. Bang, A. Baxter, J. Bensinger, E. P. Bernard, A. Bernstein, A. Bhatti, A. Biekert, T. P. Biesiadzinski, H. J. Birch, K. E. Boast, B. Boxer, P. Brás, J. H. Buckley , et al. (167 additional authors not shown)

    Abstract: The LUX-ZEPLIN (LZ) experiment will enable a neutrinoless double beta decay search in parallel to the main science goal of discovering dark matter particle interactions. We report the expected LZ sensitivity to $^{136}$Xe neutrinoless double beta decay, taking advantage of the significant ($>$600 kg) $^{136}$Xe mass contained within the active volume of LZ without isotopic enrichment. After 1000 l… ▽ More

    Submitted 24 April, 2020; v1 submitted 9 December, 2019; originally announced December 2019.

    Comments: 13 pages, 7 figures, 2 tables, version 2 changes: additional clarifications requested by referee on Sections II.A, III.C, III.E, III.F and IV.B

    Journal ref: Phys. Rev. C 102, 014602 (2020)

  22. arXiv:1912.02742  [pdf, other

    nucl-ex physics.ins-det

    Search for two neutrino double electron capture of $^{124}$Xe and $^{126}$Xe in the full exposure of the LUX detector

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag, M. G. D. Gilchriese , et al. (74 additional authors not shown)

    Abstract: Two-neutrino double electron capture is a process allowed in the Standard Model of Particle Physics. This rare decay has been observed in $^{78}$Kr, $^{130}$Ba and more recently in $^{124}$Xe. In this publication we report on the search for this process in $^{124}$Xe and $^{126}$Xe using the full exposure of the Large Underground Xenon (LUX) experiment, in a total of of 27769.5~kg-days. No evidenc… ▽ More

    Submitted 19 May, 2020; v1 submitted 5 December, 2019; originally announced December 2019.

    Comments: 8 pages, 3 figures

    Journal ref: J.Phys.G 47 (2020) 10, 105105

  23. arXiv:1910.09124  [pdf, other

    physics.ins-det astro-ph.IM hep-ex

    The LUX-ZEPLIN (LZ) Experiment

    Authors: The LZ Collaboration, D. S. Akerib, C. W. Akerlof, D. Yu. Akimov, A. Alquahtani, S. K. Alsum, T. J. Anderson, N. Angelides, H. M. Araújo, A. Arbuckle, J. E. Armstrong, M. Arthurs, H. Auyeung, X. Bai, A. J. Bailey, J. Balajthy, S. Balashov, J. Bang, M. J. Barry, J. Barthel, D. Bauer, P. Bauer, A. Baxter, J. Belle, P. Beltrame , et al. (357 additional authors not shown)

    Abstract: We describe the design and assembly of the LUX-ZEPLIN experiment, a direct detection search for cosmic WIMP dark matter particles. The centerpiece of the experiment is a large liquid xenon time projection chamber sensitive to low energy nuclear recoils. Rejection of backgrounds is enhanced by a Xe skin veto detector and by a liquid scintillator Outer Detector loaded with gadolinium for efficient n… ▽ More

    Submitted 3 November, 2019; v1 submitted 20 October, 2019; originally announced October 2019.

  24. arXiv:1910.04211  [pdf, other

    physics.ins-det hep-ex

    Improved Modeling of $β$ Electronic Recoils in Liquid Xenon Using LUX Calibration Data

    Authors: The LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag, M. G. D. Gilchriese , et al. (74 additional authors not shown)

    Abstract: We report here methods and techniques for creating and improving a model that reproduces the scintillation and ionization response of a dual-phase liquid and gaseous xenon time-projection chamber. Starting with the recent release of the Noble Element Simulation Technique (NEST v2.0), electronic recoil data from the $β$ decays of ${}^3$H and ${}^{14}$C in the Large Underground Xenon (LUX) detector… ▽ More

    Submitted 28 February, 2020; v1 submitted 9 October, 2019; originally announced October 2019.

    Comments: 17 Pages, 10 Figures, 2 Tables

    Journal ref: Journal of Instrumentation, Volume 15, February 2020

  25. First direct detection constraint on mirror dark matter kinetic mixing using LUX 2013 data

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag, M. G. D. Gilchriese , et al. (75 additional authors not shown)

    Abstract: We present the results of a direct detection search for mirror dark matter interactions, using data collected from the Large Underground Xenon experiment during 2013, with an exposure of 95 live-days $\times$ 118 kg. Here, the calculations of the mirror electron scattering rate in liquid xenon take into account the shielding effects from mirror dark matter captured within the Earth. Annual and diu… ▽ More

    Submitted 18 December, 2019; v1 submitted 9 August, 2019; originally announced August 2019.

    Journal ref: Phys. Rev. D 101, 012003 (2020)

  26. arXiv:1907.06272  [pdf, ps, other

    astro-ph.CO astro-ph.IM hep-ex physics.ins-det

    Extending light WIMP searches to single scintillation photons in LUX

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, A. Baxter, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. A. Chiller, C. Chiller, A. Currie, J. E. Cutter, L. de Viveiros, A. Dobi , et al. (100 additional authors not shown)

    Abstract: We present a novel analysis technique for liquid xenon time projection chambers that allows for a lower threshold by relying on events with a prompt scintillation signal consisting of single detected photons. The energy threshold of the LUX dark matter experiment is primarily determined by the smallest scintillation response detectable, which previously required a 2-fold coincidence signal in its… ▽ More

    Submitted 27 December, 2019; v1 submitted 14 July, 2019; originally announced July 2019.

    Journal ref: Phys. Rev. D 101, 042001 (2020)

  27. Measurement of the Gamma Ray Background in the Davis Cavern at the Sanford Underground Research Facility

    Authors: D. S. Akerib, C. W. Akerlof, S. K. Alsum, N. Angelides, H. M. Araújo, J. E. Armstrong, M. Arthurs, X. Bai, J. Balajthy, S. Balashov, A. Baxter, E. P. Bernard, A. Biekert, T. P. Biesiadzinski, K. E. Boast, B. Boxer, P. Brás, J. H. Buckley, V. V. Bugaev, S. Burdin, J. K. Busenitz, C. Carels, D. L. Carlsmith, M. C. Carmona-Benitez, M. Cascella , et al. (142 additional authors not shown)

    Abstract: Deep underground environments are ideal for low background searches due to the attenuation of cosmic rays by passage through the earth. However, they are affected by backgrounds from $γ$-rays emitted by $^{40}$K and the $^{238}$U and $^{232}$Th decay chains in the surrounding rock. The LUX-ZEPLIN (LZ) experiment will search for dark matter particle interactions with a liquid xenon TPC located with… ▽ More

    Submitted 14 November, 2019; v1 submitted 3 April, 2019; originally announced April 2019.

    Comments: 11 pages, 9 figures

    Journal ref: Astroparticle Physics, Volume 116, Pages 102391 (2020)

  28. arXiv:1903.12372  [pdf, other

    physics.ins-det astro-ph.IM hep-ex

    Improved Measurements of the \b{eta}-Decay Response of Liquid Xenon with the LUX Detector

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, A. Baxter, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, S. R. Fallon, A. Fan, S. Fiorucci, R. J. Gaitskell, J. Genovesi , et al. (76 additional authors not shown)

    Abstract: We report results from an extensive set of measurements of the \b{eta}-decay response in liquid xenon.These measurements are derived from high-statistics calibration data from injected sources of both $^{3}$H and $^{14}$C in the LUX detector. The mean light-to-charge ratio is reported for 13 electric field values ranging from 43 to 491 V/cm, and for energies ranging from 1.5 to 145 keV.

    Submitted 7 June, 2019; v1 submitted 29 March, 2019; originally announced March 2019.

    Journal ref: Phys. Rev. D 100, 022002 (2019)

  29. arXiv:1811.11241  [pdf, other

    astro-ph.CO astro-ph.IM hep-ex physics.ins-det

    Results of a Search for Sub-GeV Dark Matter Using 2013 LUX Data

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, T. J. R. Davison, E. Druszkiewicz, S. R. Fallon, A. Fan, S. Fiorucci, R. J. Gaitskell, J. Genovesi, C. Ghag , et al. (73 additional authors not shown)

    Abstract: The scattering of dark matter (DM) particles with sub-GeV masses off nuclei is difficult to detect using liquid xenon-based DM search instruments because the energy transfer during nuclear recoils is smaller than the typical detector threshold. However, the tree-level DM-nucleus scattering diagram can be accompanied by simultaneous emission of a Bremsstrahlung photon or a so-called "Migdal" electr… ▽ More

    Submitted 16 October, 2019; v1 submitted 27 November, 2018; originally announced November 2018.

    Journal ref: Phys. Rev. Lett. 122, 131301 (2019)

  30. arXiv:1807.07113  [pdf, other

    astro-ph.CO astro-ph.IM hep-ex physics.ins-det

    Search for annual and diurnal rate modulations in the LUX experiment

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, T. J. R. Davison, E. Druszkiewicz, S. R. Fallon, A. Fan, S. Fiorucci, R. J. Gaitskell, J. Genovesi, C. Ghag , et al. (71 additional authors not shown)

    Abstract: Various dark matter models predict annual and diurnal modulations of dark matter interaction rates in Earth-based experiments as a result of the Earth's motion in the halo. Observation of such features can provide generic evidence for detection of dark matter interactions. This paper reports a search for both annual and diurnal rate modulations in the LUX dark matter experiment using over 20 calen… ▽ More

    Submitted 27 September, 2018; v1 submitted 18 July, 2018; originally announced July 2018.

    Comments: 12 pages, 9 figures

    Report number: LLNL-JRNL-757487

    Journal ref: Phys. Rev. D 98, 062005 (2018)

  31. Significant Excess of ElectronLike Events in the MiniBooNE Short-Baseline Neutrino Experiment

    Authors: MiniBooNE Collaboration, A. A. Aguilar-Arevalo, B. C. Brown, L. Bugel, G. Cheng, J. M. Conrad, R. L. Cooper, R. Dharmapalan, A. Diaz, Z. Djurcic, D. A. Finley, R. Ford, F. G. Garcia, G. T. Garvey, J. Grange, E. -C. Huang, W. Huelsnitz, C. Ignarra, R. A. Johnson, G. Karagiorgi, T. Katori, T. Kobilarcik, W. C. Louis, C. Mariani, W. Marsh , et al. (23 additional authors not shown)

    Abstract: The MiniBooNE experiment at Fermilab reports results from an analysis of $ν_e$ appearance data from $12.84 \times 10^{20}$ protons on target in neutrino mode, an increase of approximately a factor of two over previously reported results. A $ν_e$ charged-current quasielastic event excess of $381.2 \pm 85.2$ events ($4.5 σ$) is observed in the energy range $200<E_ν^{QE}<1250$~MeV. Combining these da… ▽ More

    Submitted 26 October, 2018; v1 submitted 30 May, 2018; originally announced May 2018.

    Comments: Improved some of the figures and improved the correlation between neutrino and antineutrino data

    Report number: LA-UR-18-24586

    Journal ref: Phys. Rev. Lett. 121, 221801 (2018)

  32. LUX Trigger Efficiency

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, T. J. R. Davison, E. Druszkiewicz, S. R. Fallon, A. Fan, S. Fiorucci, R. J. Gaitskell, J. Genovesi, C. Ghag , et al. (72 additional authors not shown)

    Abstract: The Large Underground Xenon experiment (LUX) searches for dark matter using a dual-phase xenon detector. LUX uses a custom-developed trigger system for event selection. In this paper, the trigger efficiency, which is defined as the probability that an event of interest is selected for offline analysis, is studied using raw data obtained from both electron recoil (ER) and nuclear recoil (NR) calibr… ▽ More

    Submitted 4 September, 2018; v1 submitted 21 February, 2018; originally announced February 2018.

    Comments: 31 pages, 14 figures

  33. Liquid xenon scintillation measurements and pulse shape discrimination in the LUX dark matter detector

    Authors: The LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, P. Brás, D. Byram, M. C. Carmona-Benitez, C. Chan, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, E. Druszkiewicz, B. N. Edwards, S. R. Fallon, A. Fan, S. Fiorucci , et al. (68 additional authors not shown)

    Abstract: Weakly Interacting Massive Particles (WIMPs) are a leading candidate for dark matter and are expected to produce nuclear recoil (NR) events within liquid xenon time-projection chambers. We present a measurement of the scintillation timing characteristics of liquid xenon in the LUX dark matter detector and develop a pulse shape discriminant to be used for particle identification. To accurately meas… ▽ More

    Submitted 10 May, 2018; v1 submitted 16 February, 2018; originally announced February 2018.

    Comments: 16 pages, 11 figures

    Journal ref: Phys. Rev. D 97, 112002 (2018)

  34. arXiv:1802.06039  [pdf, other

    astro-ph.IM astro-ph.CO hep-ex physics.ins-det

    Projected WIMP sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment

    Authors: D. S. Akerib, C. W. Akerlof, S. K. Alsum, H. M. Araújo, M. Arthurs, X. Bai, A. J. Bailey, J. Balajthy, S. Balashov, D. Bauer, J. Belle, P. Beltrame, T. Benson, E. P. Bernard, T. P. Biesiadzinski, K. E. Boast, B. Boxer, P. Brás, J. H. Buckley, V. V. Bugaev, S. Burdin, J. K. Busenitz, C. Carels, D. L. Carlsmith, B. Carlson , et al. (153 additional authors not shown)

    Abstract: LUX-ZEPLIN (LZ) is a next generation dark matter direct detection experiment that will operate 4850 feet underground at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. Using a two-phase xenon detector with an active mass of 7~tonnes, LZ will search primarily for low-energy interactions with Weakly Interacting Massive Particles (WIMPs), which are hypothesized to make up… ▽ More

    Submitted 2 December, 2019; v1 submitted 16 February, 2018; originally announced February 2018.

    Comments: 14 pages, 11 figures

    Journal ref: Phys. Rev. D 101, 052002 (2020)

  35. arXiv:1801.03848  [pdf, other

    hep-ex hep-ph nucl-ex

    First Measurement of Monoenergetic Muon Neutrino Charged Current Interactions

    Authors: A. A. Aguilar-Arevalo, B. C. Brown, L. Bugel, G. Cheng, E. D. Church, J. M. Conrad, R. L. Cooper, R. Dharmapalan, Z. Djurcic, D. A. Finley, R. S. Fitzpatrick, R. Ford, F. G. Garcia, G. T. Garvey, J. Grange, W. Huelsnitz, C. Ignarra, R. Imlay, R. A. Johnson, J. R. Jordan, G. Karagiorgi, T. Katori, T. Kobilarcik, W. C. Louis, K. Mahn , et al. (24 additional authors not shown)

    Abstract: We report the first measurement of monoenergetic muon neutrino charged current interactions. MiniBooNE has isolated 236 MeV muon neutrino events originating from charged kaon decay at rest ($K^+ \rightarrow μ^+ ν_μ$) at the NuMI beamline absorber. These signal $ν_μ$-carbon events are distinguished from primarily pion decay in flight $ν_μ$ and $\overlineν_μ$ backgrounds produced at the target stati… ▽ More

    Submitted 7 May, 2018; v1 submitted 11 January, 2018; originally announced January 2018.

    Comments: 6 pages, 4 figures

    Journal ref: Phys. Rev. Lett. 120, 141802 (2018)

  36. Calibration, event reconstruction, data analysis and limits calculation for the LUX dark matter experiment

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, J. E. Y. Dobson, E. Druszkiewicz, B. N. Edwards, C. H. Faham, S. R. Fallon , et al. (73 additional authors not shown)

    Abstract: The LUX experiment has performed searches for dark matter particles scattering elastically on xenon nuclei, leading to stringent upper limits on the nuclear scattering cross sections for dark matter. Here, for results derived from ${1.4}\times 10^{4}\;\mathrm{kg\,days}$ of target exposure in 2013, details of the calibration, event-reconstruction, modeling, and statistical tests that underlie the r… ▽ More

    Submitted 15 December, 2017; originally announced December 2017.

    Journal ref: Phys. Rev. D 97, 102008 (2018)

  37. arXiv:1710.02752  [pdf, other

    physics.ins-det hep-ex physics.comp-ph

    Position Reconstruction in LUX

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, E. Druszkiewicz, B. N. Edwards, S. R. Fallon, A. Fan , et al. (69 additional authors not shown)

    Abstract: The $(x, y)$ position reconstruction method used in the analysis of the complete exposure of the Large Underground Xenon (LUX) experiment is presented. The algorithm is based on a statistical test that makes use of an iterative method to recover the photomultiplier tube (PMT) light response directly from the calibration data. The light response functions make use of a two dimensional functional fo… ▽ More

    Submitted 12 March, 2018; v1 submitted 7 October, 2017; originally announced October 2017.

    Comments: 30 pages, 17 figures

    Journal ref: Journal of Instrumentation, Volume 13, February 2018, P02001

  38. arXiv:1709.00800  [pdf, other

    physics.ins-det astro-ph.IM hep-ex

    Ultra-Low Energy Calibration of LUX Detector using $^{127}$Xe Electron Capture

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, E. Druszkiewicz, B. N. Edwards, S. R. Fallon, A. Fan , et al. (69 additional authors not shown)

    Abstract: We report an absolute calibration of the ionization yields($\textit{Q$_y$})$ and fluctuations for electronic recoil events in liquid xenon at discrete energies between 186 eV and 33.2 keV. The average electric field applied across the liquid xenon target is 180 V/cm. The data are obtained using low energy $^{127}$Xe electron capture decay events from the 95.0-day first run from LUX (WS2013) in sea… ▽ More

    Submitted 3 September, 2017; originally announced September 2017.

    Comments: 10 pages, 10 figures, 2 tables

    Journal ref: Phys. Rev. D 96, 112011 (2017)

  39. arXiv:1709.00095  [pdf, other

    physics.ins-det hep-ex physics.comp-ph

    3D Modeling of Electric Fields in the LUX Detector

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, E. Druszkiewicz, B. N. Edwards, S. R. Fallon, A. Fan , et al. (69 additional authors not shown)

    Abstract: This work details the development of a three-dimensional (3D) electric field model for the LUX detector. The detector took data during two periods of searching for weakly interacting massive particle (WIMP) searches. After the first period completed, a time-varying non-uniform negative charge developed in the polytetrafluoroethylene (PTFE) panels that define the radial boundary of the detector's a… ▽ More

    Submitted 27 November, 2017; v1 submitted 31 August, 2017; originally announced September 2017.

    Journal ref: JINST 12, no. 11, P11022 (2017)

  40. $^{83\textrm{m}}$Kr calibration of the 2013 LUX dark matter search

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, E. Druszkiewicz, B. N. Edwards, S. R. Fallon, A. Fan , et al. (69 additional authors not shown)

    Abstract: LUX was the first dark matter experiment to use a $^{83\textrm{m}}$Kr calibration source. In this paper we describe the source preparation and injection. We also present several $^{83\textrm{m}}$Kr calibration applications in the context of the 2013 LUX exposure, including the measurement of temporal and spatial variation in scintillation and charge signal amplitudes, and several methods to unders… ▽ More

    Submitted 8 August, 2017; originally announced August 2017.

    Journal ref: Phys. Rev. D 96, 112009 (2017)

  41. Limits on spin-dependent WIMP-nucleon cross section obtained from the complete LUX exposure

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. A. Chiller, C. Chiller, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, J. E. Y. Dobson, E. Druszkiewicz , et al. (75 additional authors not shown)

    Abstract: We present experimental constraints on the spin-dependent WIMP-nucleon elastic cross sections from the total 129.5 kg-year exposure acquired by the Large Underground Xenon experiment (LUX), operating at the Sanford Underground Research Facility in Lead, South Dakota (USA). A profile likelihood ratio analysis allows 90% CL upper limits to be set on the WIMP-neutron (WIMP-proton) cross section of… ▽ More

    Submitted 23 June, 2017; v1 submitted 9 May, 2017; originally announced May 2017.

    Comments: 7 pages, 3 figures, version accepted by PRL

    Journal ref: Phys. Rev. Lett. 118, 251302 (2017)

  42. First Searches for Axions and Axion-Like Particles with the LUX Experiment

    Authors: D. S. Akerib, S. Alsum, C. Aquino, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. A. Chiller, C. Chiller, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, J. E. Y. Dobson, E. Druszkiewicz , et al. (76 additional authors not shown)

    Abstract: The first searches for axions and axion-like particles with the Large Underground Xenon (LUX) experiment are presented. Under the assumption of an axio-electric interaction in xenon, the coupling constant between axions and electrons, gAe is tested, using data collected in 2013 with an exposure totalling 95 live-days $\times$ 118 kg. A double-sided, profile likelihood ratio statistic test excludes… ▽ More

    Submitted 30 June, 2017; v1 submitted 7 April, 2017; originally announced April 2017.

    Journal ref: Phys. Rev. Lett. 118, 261301 (2017)

  43. arXiv:1703.09144  [pdf, other

    physics.ins-det astro-ph.IM hep-ex

    LUX-ZEPLIN (LZ) Technical Design Report

    Authors: B. J. Mount, S. Hans, R. Rosero, M. Yeh, C. Chan, R. J. Gaitskell, D. Q. Huang, J. Makkinje, D. C. Malling, M. Pangilinan, C. A. Rhyne, W. C. Taylor, J. R. Verbus, Y. D. Kim, H. S. Lee, J. Lee, D. S. Leonard, J. Li, J. Belle, A. Cottle, W. H. Lippincott, D. J. Markley, T. J. Martin, M. Sarychev, T. E. Tope , et al. (237 additional authors not shown)

    Abstract: In this Technical Design Report (TDR) we describe the LZ detector to be built at the Sanford Underground Research Facility (SURF). The LZ dark matter experiment is designed to achieve sensitivity to a WIMP-nucleon spin-independent cross section of three times ten to the negative forty-eighth square centimeters.

    Submitted 27 March, 2017; originally announced March 2017.

    Comments: 392 pages. Submitted to the Department of Energy as part of the documentation for the Critical Decision Numbers Two and Three (CD-2 and CD-3) management processes. Report also available by chapter at <a href="http://hep.ucsb.edu/LZ/TDR/">this URL</a>

    Report number: LBNL-1007256

  44. Identification of Radiopure Titanium for the LZ Dark Matter Experiment and Future Rare Event Searches

    Authors: D. S. Akerib, C. W. Akerlof, D. Yu. Akimov, S. K. Alsum, H. M. Araújo, I. J. Arnquist, M. Arthurs, X. Bai, A. J. Bailey, J. Balajthy, S. Balashov, M. J. Barry, J. Belle, P. Beltrame, T. Benson, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, K. E. Boast, A. Bolozdynya, B. Boxer, R. Bramante, P. Brás, J. H. Buckley, V. V. Bugaev , et al. (180 additional authors not shown)

    Abstract: The LUX-ZEPLIN (LZ) experiment will search for dark matter particle interactions with a detector containing a total of 10 tonnes of liquid xenon within a double-vessel cryostat. The large mass and proximity of the cryostat to the active detector volume demand the use of material with extremely low intrinsic radioactivity. We report on the radioassay campaign conducted to identify suitable metals,… ▽ More

    Submitted 26 September, 2017; v1 submitted 8 February, 2017; originally announced February 2017.

    Comments: 13 pages, 3 figures, accepted for publication in Astroparticle Physics

  45. arXiv:1612.05824  [pdf, other

    physics.ins-det hep-ex

    Design and Construction of the MicroBooNE Detector

    Authors: MicroBooNE Collaboration, R. Acciarri, C. Adams, R. An, A. Aparicio, S. Aponte, J. Asaadi, M. Auger, N. Ayoub, L. Bagby, B. Baller, R. Barger, G. Barr, M. Bass, F. Bay, K. Biery, M. Bishai, A. Blake, V. Bocean, D. Boehnlein, V. D. Bogert, T. Bolton, L. Bugel, C. Callahan, L. Camilleri , et al. (215 additional authors not shown)

    Abstract: This paper describes the design and construction of the MicroBooNE liquid argon time projection chamber and associated systems. MicroBooNE is the first phase of the Short Baseline Neutrino program, located at Fermilab, and will utilize the capabilities of liquid argon detectors to examine a rich assortment of physics topics. In this document details of design specifications, assembly procedures, a… ▽ More

    Submitted 17 January, 2017; v1 submitted 17 December, 2016; originally announced December 2016.

  46. arXiv:1610.02076  [pdf, other

    physics.ins-det hep-ex

    Signal yields, energy resolution, and recombination fluctuations in liquid xenon

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, R. Bramante, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. A. Chiller, C. Chiller, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, J. E. Y. Dobson, E. Druszkiewicz , et al. (76 additional authors not shown)

    Abstract: This work presents an analysis of monoenergetic electronic recoil peaks in the dark-matter-search and calibration data from the first underground science run of the Large Underground Xenon (LUX) detector. Liquid xenon charge and light yields for electronic recoil energies between 5.2 and 661.7 keV are measured, as well as the energy resolution for the LUX detector at those same energies. Additiona… ▽ More

    Submitted 6 October, 2016; originally announced October 2016.

    Comments: 11 pages, 12 figures, 3 tables

    Journal ref: Phys. Rev. D 95, 012008 (2017)

  47. arXiv:1608.07648  [pdf, other

    astro-ph.CO astro-ph.IM hep-ex physics.ins-det

    Results from a search for dark matter in the complete LUX exposure

    Authors: D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, R. Bramante, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. A. Chiller, C. Chiller, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, J. E. Y. Dobson, E. Druszkiewicz , et al. (76 additional authors not shown)

    Abstract: We report constraints on spin-independent weakly interacting massive particle (WIMP)-nucleon scattering using a 3.35e4 kg-day exposure of the Large Underground Xenon (LUX) experiment. A dual-phase xenon time projection chamber with 250 kg of active mass is operated at the Sanford Underground Research Facility under Lead, South Dakota (USA). With roughly fourfold improvement in sensitivity for high… ▽ More

    Submitted 13 January, 2017; v1 submitted 26 August, 2016; originally announced August 2016.

    Comments: This version includes a combined analysis with previously published LUX results, and matches the version published in PRL

    Journal ref: Phys. Rev. Lett. 118, 021303 (2017)

  48. arXiv:1608.05381  [pdf, other

    physics.ins-det astro-ph.IM hep-ex

    Low-energy (0.7-74 keV) nuclear recoil calibration of the LUX dark matter experiment using D-D neutron scattering kinematics

    Authors: LUX Collaboration, D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, A. Bradley, R. Bramante, P. Brás, D. Byram, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, J. J. Chapman, A. A. Chiller, C. Chiller, A. Currie, J. E. Cutter, T. J. R. Davison , et al. (82 additional authors not shown)

    Abstract: The Large Underground Xenon (LUX) experiment is a dual-phase liquid xenon time projection chamber (TPC) operating at the Sanford Underground Research Facility in Lead, South Dakota. A calibration of nuclear recoils in liquid xenon was performed $\textit{in situ}$ in the LUX detector using a collimated beam of mono-energetic 2.45 MeV neutrons produced by a deuterium-deuterium (D-D) fusion source. T… ▽ More

    Submitted 26 October, 2016; v1 submitted 18 August, 2016; originally announced August 2016.

    Comments: 24 pages, 15 figures, 6 tables

  49. Chromatographic separation of radioactive noble gases from xenon

    Authors: LUX Collaboration, D. S. Akerib, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, R. Bramante, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, A. A. Chiller, C. Chiller, T. Coffey, A. Currie, J. E. Cutter, T. J. R. Davison, A. Dobi, J. E. Y. Dobson, E. Druszkiewicz, B. N. Edwards , et al. (74 additional authors not shown)

    Abstract: The Large Underground Xenon (LUX) experiment operates at the Sanford Underground Research Facility to detect nuclear recoils from the hypothetical Weakly Interacting Massive Particles (WIMPs) on a liquid xenon target. Liquid xenon typically contains trace amounts of the noble radioactive isotopes $^{85}$Kr and $^{39}$Ar that are not removed by the in situ gas purification system. The decays of the… ▽ More

    Submitted 26 October, 2017; v1 submitted 12 May, 2016; originally announced May 2016.

    Comments: Accepted in Astropart. Phys

  50. Results on the Spin-Dependent Scattering of Weakly Interacting Massive Particles on Nucleons from the Run 3 Data of the LUX Experiment

    Authors: LUX Collaboration, D. S. Akerib, H. M. Araújo, X. Bai, A. J. Bailey, J. Balajthy, P. Beltrame, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, A. Bradley, R. Bramante, S. B. Cahn, M. C. Carmona-Benitez, C. Chan, J. J. Chapman, A. A. Chiller, C. Chiller, A. Currie, J. E. Cutter, T. J. R. Davison, L. de Viveiros, A. Dobi, J. E. Y. Dobson , et al. (77 additional authors not shown)

    Abstract: We present the first experimental constraints on the spin-dependent WIMP-nucleon elastic cross sections from LUX data acquired in 2013. LUX is a dual-phase xenon time projection chamber operating at the Sanford Underground Research Facility (Lead, South Dakota), which is designed to observe the recoil signature of galactic WIMPs scattering from xenon nuclei. A profile likelihood ratio analysis of… ▽ More

    Submitted 16 May, 2016; v1 submitted 10 February, 2016; originally announced February 2016.

    Comments: 6 pages, 2 figures

    Journal ref: Phys. Rev. Lett. 116, 161302 (2016)