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Showing 1–50 of 114 results for author: Monroe, J

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  1. arXiv:2402.00181  [pdf, other

    cond-mat.other physics.ins-det

    QUEST-DMC: Background Modelling and Resulting Heat Deposit for a Superfluid Helium-3 Bolometer

    Authors: S. Autti, A. Casey, N. Eng, N. Darvishi, P. Franchini, R. P. Haley, P. J. Heikkinen, A. Kemp, E. Leason, L. V. Levitin, J. Monroe, J. March-Russel, M. T. Noble, J. R. Prance, X. Rojas, T. Salmon, J. Saunders, R. Smith, M. D. Thompson, V. Tsepelin, S. M. West, L. Whitehead, K. Zhang, D. E. Zmeev

    Abstract: We report the results of radioactivity assays and heat leak calculations for a range of common cryogenic materials, considered for use in the QUEST-DMC superfluid 3He dark matter detector. The bolometer, instrumented with nanomechanical resonators, will be sensitive to energy deposits from dark matter interactions. Events from radioactive decays and cosmic rays constitute a significant background… ▽ More

    Submitted 31 January, 2024; originally announced February 2024.

  2. arXiv:2401.00294  [pdf, other

    quant-ph

    Robust Quantum Control in Closed and Open Systems: Theory and Practice

    Authors: C. A. Weidner, E. A. Reed, J. Monroe, B. Sheller, S. O'Neil, E. Maas, E. A. Jonckheere, F. C. Langbein, S. G. Schirmer

    Abstract: Robust control of quantum systems is an increasingly relevant field of study amidst the second quantum revolution, but there remains a gap between taming quantum physics and robust control in its modern analytical form that culminated in fundamental performance bounds. In general, quantum systems are not amenable to linear, time-invariant, measurement-based robust control techniques, and thus nove… ▽ More

    Submitted 30 December, 2023; originally announced January 2024.

  3. arXiv:2311.18647  [pdf, other

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

    Long-term temporal stability of the DarkSide-50 dark matter detector

    Authors: The DarkSide-50 Collaboration, :, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, M. Ave, H. O. Back, G. Batignani, K. Biery, V. Bocci, W. M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, M. D. Campos, N. Canci, M. Caravati, N. Cargioli, M. Cariello, M. Carlini, V. Cataudella , et al. (121 additional authors not shown)

    Abstract: The stability of a dark matter detector on the timescale of a few years is a key requirement due to the large exposure needed to achieve a competitive sensitivity. It is especially crucial to enable the detector to potentially detect any annual event rate modulation, an expected dark matter signature. In this work, we present the performance history of the DarkSide-50 dual-phase argon time project… ▽ More

    Submitted 15 January, 2024; v1 submitted 30 November, 2023; originally announced November 2023.

    Comments: 16 pages, 5 figures

  4. arXiv:2311.02452  [pdf, other

    physics.ins-det cond-mat.mes-hall

    Long nanomechanical resonators with circular cross-section

    Authors: Samuli Autti, Andrew Casey, Marie Connelly, Neda Darvishi, Paolo Franchini, James Gorman, Richard P. Haley, Petri J. Heikkinen, Ashlea Kemp, Elizabeth Leason, John March-Russell, Jocelyn Monroe, Theo Noble, George R. Pickett, Jonathan R. Prance, Xavier Rojas, Tineke Salmon, John Saunders, Jack Slater, Robert Smith, Michael D. Thompson, Stephen M. West, Luke Whitehead, Vladislav V. Zavjalov, Kuang Zhang , et al. (1 additional authors not shown)

    Abstract: Fabrication of superconducting nanomechanical resonators for quantum research, detectors and devices traditionally relies on a lithographic process, resulting in oscillators with sharp edges and a suspended length limited to a few 100 micrometres. We report a low-investment top-down approach to fabricating NbTi nanowire resonators with suspended lengths up to several millimetres and diameters down… ▽ More

    Submitted 4 November, 2023; originally announced November 2023.

    Comments: 19 pages, 4 figures

  5. arXiv:2310.11304  [pdf, other

    hep-ex astro-ph.CO cond-mat.other hep-ph

    QUEST-DMC superfluid $^3$He detector for sub-GeV dark matter

    Authors: S. Autti, A. Casey, N. Eng, N. Darvishi, P. Franchini, R. P. Haley, P. J. Heikkinen, A. Jennings, A. Kemp, E. Leason, L. V. Levitin, J. Monroe, J. March-Russel, M. T. Noble, J. R. Prance, X. Rojas, T. Salmon, J. Saunders, R. Smith, M. D. Thompson, V. Tsepelin, S. M. West, L. Whitehead, V. V. Zavjalov, D. E. Zmeev

    Abstract: The focus of dark matter searches to date has been on Weakly Interacting Massive Particles (WIMPs) in the GeV/$c^2$-TeV/$c^2$ mass range. The direct, indirect and collider searches in this mass range have been extensive but ultimately unsuccessful, providing a strong motivation for widening the search outside this range. Here we describe a new concept for a dark matter experiment, employing superf… ▽ More

    Submitted 14 March, 2024; v1 submitted 17 October, 2023; originally announced October 2023.

    Comments: 17 pages, 8 figures, 2 tables. Published in EPJ-C

    Journal ref: Eur. Phys. J. C (2024) 84:248

  6. arXiv:2307.15454  [pdf, other

    physics.ins-det

    Directionality of nuclear recoils in a liquid argon time projection chamber

    Authors: The DarkSide-20k Collaboration, :, P. Agnes, I. Ahmad, S. Albergo, I. F. M. Albuquerque, T. Alexander, A. K. Alton, P. Amaudruz, M. Atzori Corona, M. Ave, I. Ch. Avetisov, O. Azzolini, H. O. Back, Z. Balmforth, A. Barrado-Olmedo, P. Barrillon, A. Basco, G. Batignani, V. Bocci, W. M. Bonivento, B. Bottino, M. G. Boulay, J. Busto, M. Cadeddu , et al. (243 additional authors not shown)

    Abstract: The direct search for dark matter in the form of weakly interacting massive particles (WIMP) is performed by detecting nuclear recoils (NR) produced in a target material from the WIMP elastic scattering. A promising experimental strategy for direct dark matter search employs argon dual-phase time projection chambers (TPC). One of the advantages of the TPC is the capability to detect both the scint… ▽ More

    Submitted 28 July, 2023; originally announced July 2023.

    Comments: 20 pages, 10 figures, submitted to Eur. Phys. J. C

    Journal ref: Eur. Phys. J. C 84:24 (2024)

  7. arXiv:2307.07249  [pdf, other

    hep-ex astro-ph.CO

    Search for dark matter annual modulation with DarkSide-50

    Authors: The DarkSide-50 Collaboration, :, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, M. Ave, H. O. Back, G. Batignani, K. Biery, V. Bocci, W. M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, M. D. Campos, N. Canci, M. Caravati, N. Cargioli, M. Cariello, M. Carlini, V. Cataudella , et al. (121 additional authors not shown)

    Abstract: Dark matter induced event rate in an Earth-based detector is predicted to show an annual modulation as a result of the Earth's orbital motion around the Sun. We searched for this modulation signature using the ionization signal of the DarkSide-50 liquid argon time projection chamber. No significant signature compatible with dark matter is observed in the electron recoil equivalent energy range abo… ▽ More

    Submitted 14 July, 2023; originally announced July 2023.

    Comments: 8 pages, 4 figures

  8. arXiv:2305.08822  [pdf, other

    physics.ins-det hep-ex

    First operation of an ALICE OROC operated in high pressure Ar-CO$_{2}$ and Ar-CH$_{4}$

    Authors: A. Ritchie-Yates, A. Deisting, G. Barker, S. Boyd, D. Brailsford, Z. Chen-Wishart, L. Cremonesi, P. Dunne, J. Eeles, P. Hamilton, A. C. Kaboth, N. Khan, A. Klustová, J. Monroe, J. Nowak, P. Singh, A. V. Waldron, J. Walding, L. Warsame, M. O. Wascko, I. Xiotidis

    Abstract: New neutrino-nucleus interaction cross-section measurements are required to improve nuclear models sufficiently for future long-baseline neutrino experiments to meet their sensitivity goals. A time projection chamber (TPC) filled with a high-pressure gas is a promising detector to characterise the neutrino sources planned for such experiments. A gas-filled TPC is ideal for measuring low-energy par… ▽ More

    Submitted 15 May, 2023; originally announced May 2023.

  9. arXiv:2302.14639  [pdf, other

    physics.ins-det hep-ex

    Precision Measurement of the Specific Activity of $^{39}$Ar in Atmospheric Argon with the DEAP-3600 Detector

    Authors: P. Adhikari, R. Ajaj, M. Alpízar-Venegas, P. -A. Amaudruz, J. Anstey, G. R. Araujo, D. J. Auty, M. Baldwin, M. Batygov, B. Beltran, H. Benmansour, C. E. Bina, J. Bonatt, W. Bonivento, M. G. Boulay, B. Broerman, J. F. Bueno, P. M. Burghardt, A. Butcher, M. Cadeddu, B. Cai, M. Cárdenas-Montes, S. Cavuoti, M. Chen, Y. Chen , et al. (125 additional authors not shown)

    Abstract: The specific activity of the beta decay of $^{39}$Ar in atmospheric argon is measured using the DEAP-3600 detector. DEAP-3600, located 2 km underground at SNOLAB, uses a total of (3269 $\pm$ 24) kg of liquid argon distilled from the atmosphere to search for dark matter. This detector with very low background uses pulseshape discrimination to differentiate between nuclear recoils and electron recoi… ▽ More

    Submitted 10 October, 2023; v1 submitted 27 February, 2023; originally announced February 2023.

    Journal ref: Eur. Phys. J. C 83, 642 (2023)

  10. Search for low mass dark matter in DarkSide-50: the bayesian network approach

    Authors: The DarkSide-50 Collaboration, :, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, M. Ave, H. O. Back, G. Batignani, K. Biery, V. Bocci, W. M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, M. D. Campos, N. Canci, M. Caravati, N. Cargioli, M. Cariello, M. Carlini, V. Cataudella , et al. (119 additional authors not shown)

    Abstract: We present a novel approach for the search of dark matter in the DarkSide-50 experiment, relying on Bayesian Networks. This method incorporates the detector response model into the likelihood function, explicitly maintaining the connection with the quantity of interest. No assumptions about the linearity of the problem or the shape of the probability distribution functions are required, and there… ▽ More

    Submitted 26 April, 2023; v1 submitted 3 February, 2023; originally announced February 2023.

    Comments: 24 pages, 12 figures, 1 table

    Journal ref: Eur. Phys. J. C 83, 322 (2023)

  11. arXiv:2209.01177  [pdf, other

    physics.ins-det hep-ex

    Sensitivity projections for a dual-phase argon TPC optimized for light dark matter searches through the ionization channel

    Authors: P. Agnes, I. Ahmad, S. Albergo, I. F. M. Albuquerque, T. Alexander, A. K. Alton, P. Amaudruz, M. Atzori Corona, D. J. Auty, M. Ave, I. Ch. Avetisov, R. I. Avetisov, O. Azzolini, H. O. Back, Z. Balmforth, V. Barbarian, A. Barrado Olmedo, P. Barrillon, A. Basco, G. Batignani, E. Berzin, A. Bondar, W. M. Bonivento, E. Borisova, B. Bottino , et al. (274 additional authors not shown)

    Abstract: Dark matter lighter than 10 GeV/c$^2$ encompasses a promising range of candidates. A conceptual design for a new detector, DarkSide-LowMass, is presented, based on the DarkSide-50 detector and progress toward DarkSide-20k, optimized for a low-threshold electron-counting measurement. Sensitivity to light dark matter is explored for various potential energy thresholds and background rates. These stu… ▽ More

    Submitted 20 June, 2023; v1 submitted 2 September, 2022; originally announced September 2022.

    Journal ref: Phys. Rev. D 107, 112006 (2023)

  12. arXiv:2207.11968  [pdf, other

    hep-ex astro-ph.CO

    Search for dark matter particle interactions with electron final states with DarkSide-50

    Authors: The DarkSide-50 Collaboration, :, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, M. Ave, H. O. Back, G. Batignani, K. Biery, V. Bocci, W. M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, M. D. Campos, N. Canci, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, V. Cataudella , et al. (120 additional authors not shown)

    Abstract: We present a search for dark matter particles with sub-GeV/$c^2$ masses whose interactions have final state electrons using the DarkSide-50 experiment's (12306 $\pm$ 184) kg d low-radioactivity liquid argon exposure. By analyzing the ionization signals, we exclude new parameter space for the dark matter-electron cross section $\barσ_e$, the axioelectric coupling constant $g_{Ae}$, and the dark pho… ▽ More

    Submitted 16 February, 2023; v1 submitted 25 July, 2022; originally announced July 2022.

    Comments: 6 pages, 2 figures

  13. arXiv:2207.11967  [pdf, other

    hep-ex astro-ph.CO

    Search for dark matter-nucleon interactions via Migdal effect with DarkSide-50

    Authors: The DarkSide-50 Collaboration, :, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, M. Ave, H. O. Back, G. Batignani, K. Biery, V. Bocci, W. M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, M. D. Campos, N. Canci, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, V. Cataudella , et al. (121 additional authors not shown)

    Abstract: Dark matter elastic scattering off nuclei can result in the excitation and ionization of the recoiling atom through the so-called Migdal effect. The energy deposition from the ionization electron adds to the energy deposited by the recoiling nuclear system and allows for the detection of interactions of sub-GeV/c$^2$ mass dark matter. We present new constraints for sub-GeV/c$^2$ dark matter using… ▽ More

    Submitted 16 February, 2023; v1 submitted 25 July, 2022; originally announced July 2022.

    Comments: 7 pages, 3 figures

  14. arXiv:2207.11966  [pdf, other

    hep-ex astro-ph.CO

    Search for low-mass dark matter WIMPs with 12 ton-day exposure of DarkSide-50

    Authors: The DarkSide-50 Collaboration, :, P. Agnes, I. F. M. Albuquerque, T. Alexander, A. K. Alton, M. Ave, H. O. Back, G. Batignani, K. Biery, V. Bocci, W. M. Bonivento, B. Bottino, S. Bussino, M. Cadeddu, M. Cadoni, F. Calaprice, A. Caminata, N. Canci, M. Caravati, M. Cariello, M. Carlini, M. Carpinelli, V. Cataudella, P. Cavalcante , et al. (119 additional authors not shown)

    Abstract: We report on the search for dark matter WIMPs in the mass range below 10 GeV/c$^2$, from the analysis of the entire dataset acquired with a low-radioactivity argon target by the DarkSide-50 experiment at LNGS. The new analysis benefits from more accurate calibration of the detector response, improved background model, and better determination of systematic uncertainties, allowing us to accurately… ▽ More

    Submitted 24 February, 2023; v1 submitted 25 July, 2022; originally announced July 2022.

    Comments: 11 pages, 12 figures

  15. arXiv:2206.11441  [pdf, other

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

    Contextual Isotope Ranking Criteria for Peak Identification in Gamma Spectroscopy Using a Large Database

    Authors: Alexis Aguilar-Arevalo, Xavier Bertou, Carles Canet, Miguel A. Cruz-Pérez, Alexander Deisting, Adriana Dias, Juan Carlos D'Olivo, J. Francisco Favela-Pérez, Estela A. Garcés, Adiv González Muñoz, Jaime Octavio Guerra-Pulido, Javier Mancera-Alejandrez, Daniel José Marín-Lámbarri, Mauricio Martínez-Montero, Jocelyn Monroe, Sean Paling, Simon Peeters, Paul R. Scovell, Cenk Türkoglu, Eric Vázquez-Jáuregui, Joseph Walding

    Abstract: Isotope identification is a recurrent problem in gamma spectroscopy with high purity germanium detectors. In this work, new strategies are introduced to facilitate this type of analysis. Five criteria are used to identify the parent isotopes making a query on a large database of gamma-lines from a multitude of isotopes producing an output list whose entries are sorted so that the gamma-lines with… ▽ More

    Submitted 22 June, 2022; originally announced June 2022.

    Comments: 12 pages, 7 tables, 7 figures

    Journal ref: IEEE Transactions on Nuclear Science, 2022

  16. Volume reduction of water samples to increase sensitivity for radioassay of lead contamination

    Authors: A. Aguilar-Arevalo, C. Canet, M. A. Cruz-Pérez, A. Deisting, A. Dias, J. C. D'Olivo, F. Favela-Pérez, E. A. Garcés, A. González Muñoz, J. O. Guerra-Pulido, J. Mancera-Alejandrez, D. J. Marín-Lámbarri, M. Martinez Montero, J. R. Monroe, S. Paling, S. J. M. Peeters, P. R. Scovell, C. Türkoğlu, E. Vázquez-Jáuregui, J. Walding

    Abstract: The World Health Organisation (WHO) presents an upper limit for lead in drinking water of 10 parts per billion ppb. Typically, to reach this level of sensitivity, expensive metrology is required. To increase the sensitivity of low cost devices, this paper explores the prospects of using a volume reduction technique of a boiled water sample doped with Lead-210 ($^{210}Pb$), as a means to increase t… ▽ More

    Submitted 9 May, 2022; originally announced May 2022.

  17. arXiv:2203.08297  [pdf, other

    hep-ph astro-ph.CO hep-ex

    Snowmass2021 Cosmic Frontier: The landscape of low-threshold dark matter direct detection in the next decade

    Authors: Rouven Essig, Graham K. Giovanetti, Noah Kurinsky, Dan McKinsey, Karthik Ramanathan, Kelly Stifter, Tien-Tien Yu, A. Aboubrahim, D. Adams, D. S. M. Alves, T. Aralis, H. M. Araújo, D. Baxter, K. V. Berghaus, A. Berlin, C. Blanco, I. M. Bloch, W. M. Bonivento, R. Bunker, S. Burdin, A. Caminata, M. C. Carmona-Benitez, L. Chaplinsky, T. Y. Chen, S. E. Derenzo , et al. (68 additional authors not shown)

    Abstract: The search for particle-like dark matter with meV-to-GeV masses has developed rapidly in the past few years. We summarize the science case for these searches, the recent progress, and the exciting upcoming opportunities. Funding for Research and Development and a portfolio of small dark matter projects will allow the community to capitalize on the substantial recent advances in theory and experime… ▽ More

    Submitted 27 April, 2023; v1 submitted 15 March, 2022; originally announced March 2022.

    Comments: Contribution to Snowmass 2021. v2: includes endorsers and minor changes

  18. arXiv:2202.13207  [pdf

    cond-mat.stat-mech

    The location of the Fisher zeros and estimates of yT = 1/ν are found for the Baxter-Wu model

    Authors: James L. Monroe

    Abstract: It is shown that the location of the Fisher zeros of the Baxter-Wu model, for two series of finite sized clusters, with spherical boundary conditions, is extremely simple. They lie on the unit circle in the complex Sinh[2\b{eta}J3] plane. This is the same location as the Fisher zeros of the Ising model with nearest neighbor interactions, J2, on the square lattice have, with Brascamp-Kunz boundary… ▽ More

    Submitted 26 February, 2022; originally announced February 2022.

    Comments: 12 pages, 4 figures, 3 tables

    Journal ref: J. Phys. A: Math. Theor. 55 375001 (2022)

  19. arXiv:2201.03348  [pdf

    physics.ins-det

    PlomBOX -- development of a low-cost CMOS device for environmental monitoring

    Authors: A. Aguilar-Arevalo, E. Alba Posse, M. Alvarez, H. Arnaldi, H. Asorey, X. Bertou, A. Colque, A. Deisting, A. Dias, J. C. D'Olivo, F. Favela-Pérez, Y. Gándola, E. A. Garcés, J. Gasulla, M. Gómez Berisso, A. González Muñoz, J. O. Guerra-Pulido, S. Gutierrez, S. Jois, J. Lipovetzky, J. Lovera, M. B. Lovino, D. J. Marín-Lámbarri, L. Marpegan, D. Martín , et al. (14 additional authors not shown)

    Abstract: This paper reports on the development of a novel CMOS device employing lead-sensing bacteria to assay lead in drinking water. The objective of the PlomBOX project is to develop a low-cost sensor (£10) which can expedite access to on-demand assay methods and thus help mitigate lead intake through contaminated drinking water. The project follows three development paths: a) Certain bacteria can fluor… ▽ More

    Submitted 10 January, 2022; originally announced January 2022.

  20. arXiv:2108.09405  [pdf, other

    astro-ph.CO astro-ph.HE hep-ex hep-ph

    First direct detection constraints on Planck-scale mass dark matter with multiple-scatter signatures using the DEAP-3600 detector

    Authors: P. Adhikari, R. Ajaj, M. Alpízar-Venegas, D. J. Auty, H. Benmansour, C. E. Bina, W. Bonivento, M. G. Boulay, M. Cadeddu, B. Cai, M. Cárdenas-Montes, S. Cavuoti, Y. Chen, B. T. Cleveland, J. M. Corning, S. Daugherty, P. DelGobbo, P. Di Stefano, L. Doria, M. Dunford, E. Ellingwood, A. Erlandson, S. S. Farahani, N. Fatemighomi, G. Fiorillo , et al. (72 additional authors not shown)

    Abstract: Dark matter particles with Planck-scale mass ($\simeq10^{19}\text{GeV}/c^2$) arise in well-motivated theories and could be produced by several cosmological mechanisms. Using a blind analysis of data collected over a 813 d live time with DEAP-3600, a 3.3 t single-phase liquid argon-based dark matter experiment at SNOLAB, a search for supermassive dark matter was performed, looking for multiple-scat… ▽ More

    Submitted 5 January, 2022; v1 submitted 20 August, 2021; originally announced August 2021.

    Journal ref: Phys. Rev. Lett. 128, 011801 (2022)

  21. arXiv:2108.07828  [pdf, other

    quant-ph

    Partial Measurements of Quantum Systems

    Authors: Jonathan Monroe

    Abstract: Projective measurement is a commonly used assumption in quantum mechanics. However, advances in quantum measurement techniques allow for partial measurements, which accurately estimate state information while keeping the wavefunction intact. In this dissertation, we employ partial measurements to study two phenomena. First, we investigate an uncertainty relation -- in the style of Heisenberg's 192… ▽ More

    Submitted 22 August, 2021; v1 submitted 17 August, 2021; originally announced August 2021.

    Comments: Dissertation: 136 pages, 31 figures

  22. arXiv:2108.05354  [pdf, other

    cond-mat.supr-con cond-mat.mes-hall quant-ph

    Fabrication and surface treatment of electron-beam evaporated niobium for low-loss coplanar waveguide resonators

    Authors: D. Kowsari, K. Zheng, J. T. Monroe, N. J. Thobaben, X. Du, P. M. Harrington, E. A. Henriksen, D. S. Wisbey, K. W. Murch

    Abstract: We characterize low-loss electron-beam evaporated niobium thin films deposited under ultra-high vacuum conditions. Slow deposition yields films with a high superconducting transition temperature ($9.20 \pm 0.06 \rm ~K$) as well as a residual resistivity ratio of $4.8$. We fabricate the films into coplanar waveguide resonators to extract the intrinsic loss due to the presence of two-level-system fl… ▽ More

    Submitted 4 October, 2021; v1 submitted 11 August, 2021; originally announced August 2021.

    Comments: 5 pages, 3 figures

    Journal ref: Appl. Phys. Lett. 120, 102601 (2022)

  23. arXiv:2107.13753  [pdf, other

    physics.ins-det

    Characterisation of SiPM Photon Emission in the Dark

    Authors: J. B. McLaughlin, G. Gallina, F. Retière, A. De St. Croix, P. Giampa, M. Mahtab, P. Margetak, L. Martin, N. Massacret, J. Monroe, M. Patel, K. Raymond, J. Roiseux, L. Xie, G. Zhang

    Abstract: In this paper, we report on the photon emission of Silicon Photomultipliers (SiPMs) from avalanche pulses generated in dark condition, with the main objective of better understanding the associated systematics for next-generation, large area, SiPM-based physics experiments. A new apparatus for spectral and imaging analysis was developed at TRIUMF and used to measure the light emitted by the two Si… ▽ More

    Submitted 16 August, 2021; v1 submitted 29 July, 2021; originally announced July 2021.

    Comments: 14 pages, 8 figures

  24. arXiv:2106.09034  [pdf, other

    cond-mat.mes-hall quant-ph

    Optical Direct Write of Dolan--Niemeyer-Bridge Junctions for Transmon Qubits

    Authors: J. T. Monroe, D. Kowsari, K. Zheng, C. Gaikwad, J. Brewster, D. S. Wisbey, K. W. Murch

    Abstract: We characterize highly coherent transmon qubits fabricated with a direct-write photolithography system. Multi-layer evaporation and oxidation allows us to change the critical current density by reducing the effective tunneling area and increasing the barrier thickness. Surface treatments before resist application and again before evaporation result in high coherence devices. With optimized surface… ▽ More

    Submitted 9 August, 2021; v1 submitted 16 June, 2021; originally announced June 2021.

    Comments: 7 pages, 3 figures

    Journal ref: Appl. Phys. Lett. 119, 062601 (2021)

  25. arXiv:2103.12202  [pdf, other

    physics.ins-det astro-ph.IM

    Pulseshape discrimination against low-energy Ar-39 beta decays in liquid argon with 4.5 tonne-years of DEAP-3600 data

    Authors: The DEAP Collaboration, P. Adhikari, R. Ajaj, M. Alpízar-Venegas, P. -A. Amaudruz, D. J. Auty, M. Batygov, B. Beltran, H. Benmansour, C. E. Bina, J. Bonatt, W. Bonivento, M. G. Boulay, B. Broerman, J. F. Bueno, P. M. Burghardt, A. Butcher, M. Cadeddu, B. Cai, M. Cárdenas-Montes, S. Cavuoti, M. Chen, Y. Chen, B. T. Cleveland, J. M. Corning , et al. (104 additional authors not shown)

    Abstract: The DEAP-3600 detector searches for the scintillation signal from dark matter particles scattering on a 3.3 tonne liquid argon target. The largest background comes from $^{39}$Ar beta decays and is suppressed using pulseshape discrimination (PSD). We use two types of PSD algorithm: the prompt-fraction, which considers the fraction of the scintillation signal in a narrow and a wide time window ar… ▽ More

    Submitted 6 April, 2021; v1 submitted 22 March, 2021; originally announced March 2021.

    Comments: 14 pages, 9 figures

    Journal ref: Eur. Phys. J. C 81, 823 (2021)

  26. Feebly-Interacting Particles:FIPs 2020 Workshop Report

    Authors: Prateek Agrawal, Martin Bauer, James Beacham, Asher Berlin, Alexey Boyarsky, Susana Cebrian, Xabier Cid-Vidal, David d'Enterria, Albert De Roeck, Marco Drewes, Bertrand Echenard, Maurizio Giannotti, Gian Francesco Giudice, Sergei Gninenko, Stefania Gori, Evgueni Goudzovski, Julian Heeck, Pilar Hernandez, Matheus Hostert, Igor Irastorza, Alexander Izmaylov, Joerg Jaeckel, Felix Kahlhoefer, Simon Knapen, Gordan Krnjaic , et al. (21 additional authors not shown)

    Abstract: With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop f… ▽ More

    Submitted 3 January, 2022; v1 submitted 24 February, 2021; originally announced February 2021.

    Comments: 240 pages, 71 figures (version published on EPJC)

  27. arXiv:2102.06643  [pdf, other

    physics.ins-det hep-ex

    A High Pressure Time Projection Chamber with Optical Readout

    Authors: Alexander Deisting, Abigail Victoria Waldron, Edward Atkin, Gary Barker, Anastasia Basharina-Freshville, Christopher Betancourt, Steven Boyd, Dominic Brailsford, Zachary Chen-Wishart, Linda Cremonesi, Adriana Dias, Patrick Dunne, Jennifer Haigh, Philip Hamacher-Baumann, Sebastian Jones, Asher Kaboth, Alexander Korzenev, William Ma, Philippe Mermod, Maria Mironova, Jocelyn Monroe, Ryan Nichol, Toby Nonnenmacher, Jaroslaw Nowak, William Parker , et al. (11 additional authors not shown)

    Abstract: Measurements of proton-nucleus scattering and high resolution neutrino-nucleus interaction imaging are key to reduce neutrino oscillation systematic uncertainties in future experiments. A High Pressure Time Projection Chamber (HPTPC) prototype has been constructed and operated at Royal Holloway University of London and CERN as a first step in the development of a HPTPC capable of performing these… ▽ More

    Submitted 2 June, 2021; v1 submitted 12 February, 2021; originally announced February 2021.

    Comments: 40 pages, 24 figures

  28. arXiv:2101.08686  [pdf, other

    physics.ins-det astro-ph.IM

    Separating $^{39}$Ar from $^{40}$Ar by cryogenic distillation with Aria for dark matter searches

    Authors: DarkSide Collaboration, P. Agnes, S. Albergo, I. F. M. Albuquerque, T. Alexander, A. Alici, A. K. Alton, P. Amaudruz, M. Arba, P. Arpaia, S. Arcelli, M. Ave, I. Ch. Avetissov, R. I. Avetisov, O. Azzolini, H. O. Back, Z. Balmforth, V. Barbarian, A. Barrado Olmedo, P. Barrillon, A. Basco, G. Batignani, A. Bondar, W. M. Bonivento, E. Borisova , et al. (287 additional authors not shown)

    Abstract: The Aria project consists of a plant, hosting a 350 m cryogenic isotopic distillation column, the tallest ever built, which is currently in the installation phase in a mine shaft at Carbosulcis S.p.A., Nuraxi-Figus (SU), Italy. Aria is one of the pillars of the argon dark-matter search experimental program, lead by the Global Argon Dark Matter Collaboration. Aria was designed to reduce the isotopi… ▽ More

    Submitted 23 January, 2021; v1 submitted 21 January, 2021; originally announced January 2021.

    Journal ref: Eur.Phys.J.C 81 (2021) 4, 359

  29. arXiv:2011.07819  [pdf, other

    astro-ph.HE astro-ph.IM physics.ins-det

    Sensitivity of future liquid argon dark matter search experiments to core-collapse supernova neutrinos

    Authors: P. Agnes, S. Albergo, I. F. M. Albuquerque, T. Alexander, A. Alici, A. K. Alton, P. Amaudruz, S. Arcelli, M. Ave, I. Ch. Avetissov, R. I. Avetisov, O. Azzolini, H. O. Back, Z. Balmforth, V. Barbarian, A. Barrado Olmedo, P. Barrillon, A. Basco, G. Batignani, A. Bondar, W. M. Bonivento, E. Borisova, B. Bottino, M. G. Boulay, G. Buccino , et al. (251 additional authors not shown)

    Abstract: Future liquid-argon DarkSide-20k and ARGO detectors, designed for direct dark matter search, will be sensitive also to core-collapse supernova neutrinos, via coherent elastic neutrino-nucleus scattering. This interaction channel is flavor-insensitive with a high-cross section, enabling for a high-statistics neutrino detection with target masses of $\sim$50~t and $\sim$360~t for DarkSide-20k and AR… ▽ More

    Submitted 31 December, 2020; v1 submitted 16 November, 2020; originally announced November 2020.

    Comments: 21 pages, 8 figures

  30. arXiv:2009.11757  [pdf, other

    physics.ins-det hep-ex nucl-ex

    Characterization of Germanium Detectors for the First Underground Laboratory in Mexico

    Authors: A. Aguilar-Arevalo, S. Alvarado-Mijangos, X. Bertou, C. Canet, M. A. Cruz-Pérez, A. Deisting, A. Dias, J. C. D'Olivo, F. Favela-Pérez, E. A. Garcés, A. González Muñoz, J. O. Guerra-Pulido, J. Mancera-Alejandrez, D. J. Marín-Lámbarri, M. Martínez Montero, J. Monroe, C. Iván Ortega-Hernández, S. Paling, S. Peeters, D. Ruíz Esparza Rodríguez, P. R. Scovell, C. Türkoğlu, E. Vázquez-Jáuregui, J. Walding

    Abstract: This article reports the characterization of two High Purity Germanium detectors performed by extracting and comparing their efficiencies using experimental data and Monte Carlo simulations. The efficiencies were calculated for pointlike $γ$-ray sources as well as for extended calibration sources. Characteristics of the detectors such as energy linearity, energy resolution, and full energy peak ef… ▽ More

    Submitted 24 September, 2020; originally announced September 2020.

    Comments: 18 pages, 13 figures

  31. arXiv:2009.11227  [pdf, other

    physics.ins-det physics.app-ph

    Dosimetry and calorimetry performance of a scientific CMOS camera for environmental monitoring

    Authors: Alexis Aguilar-Arevalo, Xavier Bertou, Carles Canet, Miguel Angel Cruz-Perez, Alexander Deisting, Adriana Dias, Juan Carlos D'Olivo, Francisco Favela-Perez, Estela A. Garces, Adiv Gonzalez Munoz, Jaime Octavio Guerra-Pulido, Javier Mancera-Alejandrez, Daniel Jose Marin-Lambarri, Mauricio Martinez Montero, Jocelyn Monroe, Sean Paling, Simon J. M. Peeters, Paul Scovell, Cenk Turkoglu, Eric Vazquez-Jauregui, Joseph Walding

    Abstract: This paper explores the prospect of CMOS devices to assay lead in drinking water, using calorimetry. Lead occurs together with traces of radioisotopes, e.g. Lead-210, producing $γ$-emissions with energies ranging from 10 keV to several 100 keV when they decay; this range is detectable in silicon sensors. In this paper we test a CMOS camera (Oxford Instruments Neo 5.5) for its general performance a… ▽ More

    Submitted 23 September, 2020; originally announced September 2020.

  32. Weak Measurement of Superconducting Qubit Reconciles Incompatible Operators

    Authors: Jonathan T. Monroe, Nicole Yunger Halpern, Taeho Lee, Kater W. Murch

    Abstract: Traditional uncertainty relations dictate a minimal amount of noise in incompatible projective quantum measurements. However, not all measurements are projective. Weak measurements are minimally invasive methods for obtaining partial state information without projection. Recently, weak measurements were shown to obey an uncertainty relation cast in terms of entropies. We experimentally test this e… ▽ More

    Submitted 11 March, 2021; v1 submitted 20 August, 2020; originally announced August 2020.

    Comments: Published version

    Report number: MIT-CTP/5278

    Journal ref: Phys. Rev. Lett. 126, 100403 (2021)

  33. arXiv:2007.15609  [pdf, other

    physics.ins-det hep-ex

    Off-Axis Characterisation of the CERN T10 Beam for low Momentum Proton Measurements with a High Pressure Gas Time Projection Chamber

    Authors: S. B. Jones, T. S. Nonnenmacher, E. Atkin, G. J. Barker, A. Basharina-Freshville, C. Betancourt, S. B. Boyd, D. Brailsford, Z. Chen-Wishart, L. Cremonesi, A. Deisting, A. Dias, P. Dunne, J. Haigh, P. Hamacher-Baumann, A. Kaboth, A. Korzenev, W. Ma, P. Mermod, M. Mironova, J. Monroe, R. Nichol, J. Nowak, W. Parker, H. Ritchie-Yates , et al. (11 additional authors not shown)

    Abstract: We present studies of proton fluxes in the T10 beamline at CERN. A prototype high pressure gas time projection chamber (TPC) was exposed to the beam of protons and other particles, using the 0.8 GeV/c momentum setting in T10, in order to make cross section measurements of low energy protons in argon. To explore the energy region comparable to hadrons produced by GeV-scale neutrino interactions at… ▽ More

    Submitted 30 July, 2020; originally announced July 2020.

    Comments: 28 pages, 30 figures

    Journal ref: Instruments (2020), 4, 21

  34. Search for $hep$ solar neutrinos and the diffuse supernova neutrino background using all three phases of the Sudbury Neutrino Observatory

    Authors: B. Aharmim, S. N. Ahmed, A. E. Anthony, N. Barros, E. W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S. D. Biller, E. Blucher, R. Bonventre, K. Boudjemline, M. G. Boulay, B. Cai, E. J. Callaghan, J. Caravaca, Y. D. Chan, D. Chauhan, M. Chen, B. T. Cleveland, G. A. Cox, X. Dai, H. Deng, F. B. Descamps, J. A. Detwiler , et al. (107 additional authors not shown)

    Abstract: A search has been performed for neutrinos from two sources, the $hep$ reaction in the solar $pp$ fusion chain and the $ν_e$ component of the diffuse supernova neutrino background (DSNB), using the full dataset of the Sudbury Neutrino Observatory with a total exposure of 2.47 kton-years after fiducialization. The $hep$ search is performed using both a single-bin counting analysis and a likelihood f… ▽ More

    Submitted 12 November, 2020; v1 submitted 15 July, 2020; originally announced July 2020.

    Comments: 11 pages, 6 figures

    Journal ref: Phys. Rev. D 102, 062006 (2020)

  35. arXiv:2006.00989  [pdf, ps, other

    math.GR math.AT

    Linking of letters and the lower central series of free groups

    Authors: Jeff Monroe, Dev Sinha

    Abstract: We develop invariants of the lower central series of free groups through linking of letters, showing they span the rational linear dual of the lower central series subquotients. We build on an approach to Lie coalgebras through operads, setting the stage for generalization to the lower central series Lie algebra of any group. Our approach yields a new co-basis for free Lie algebras. We compare wit… ▽ More

    Submitted 16 January, 2022; v1 submitted 1 June, 2020; originally announced June 2020.

    Comments: 25 pages

    MSC Class: 20E05; 20F14; 55Q25

  36. arXiv:2005.14667  [pdf, other

    astro-ph.CO astro-ph.GA hep-ex hep-ph

    Constraints on dark matter-nucleon effective couplings in the presence of kinematically distinct halo substructures using the DEAP-3600 detector

    Authors: P. Adhikari, R. Ajaj, C. E. Bina, W. Bonivento, M. G. Boulay, M. Cadeddu, B. Cai, M. Cárdenas-Montes, S. Cavuoti, Y. Chen, B. T. Cleveland, J. M. Corning, S. Daugherty, P. DelGobbo, P. Di Stefano, L. Doria, M. Dunford, A. Erlandson, S. S. Farahani, N. Fatemighomi, G. Fiorillo, D. Gallacher, E. A. Garcés, P. García Abia, S. Garg , et al. (59 additional authors not shown)

    Abstract: DEAP-3600 is a single-phase liquid argon detector aiming to directly detect Weakly Interacting Massive Particles (WIMPs), located at SNOLAB (Sudbury, Canada). After analyzing data taken during the first year of operation, a null result was used to place an upper bound on the WIMP-nucleon spin-independent, isoscalar cross section. This study reinterprets this result within a Non-Relativistic Effect… ▽ More

    Submitted 5 January, 2022; v1 submitted 29 May, 2020; originally announced May 2020.

    Journal ref: Phys. Rev. D 102, 082001 (2020)

  37. Extremely well isolated 2D spin-$1/2$ antiferromagnetic Heisenberg layers with small exchange coupling in the molecular-based magnet CuPOF

    Authors: D. Opherden, N. Nizar, K. Richardson, J. C. Monroe, M. M. Turnbull, M. Polson, S. Vela, W. J. A. Blackmore, P. A. Goddard, J. Singleton, E. S. Choi, F. Xiao, R. C. Williams, T. Lancaster, F. L. Pratt, S. J. Blundell, Y. Skourski, M. Uhlarz, A. N. Ponomaryov, S. A. Zvyagin, J. Wosnitza, M. Baenitz, I. Heinmaa, R. Stern, H. Kühne , et al. (1 additional authors not shown)

    Abstract: We report on a comprehensive characterization of the newly synthesized Cu$^{2+}$-based molecular magnet [Cu(pz)$_2$(2-HOpy)$_2$](PF$_6$)$_2$ (CuPOF), where pz = C$_4$H$_4$N$_2$ and 2-HOpy = C$_5$H$_4$NHO. From a comparison of theoretical modeling to results of bulk magnetometry, specific heat, $μ^+$SR, ESR, and NMR spectroscopy, this material is determined as an excellent realization of the 2D squ… ▽ More

    Submitted 1 September, 2020; v1 submitted 25 May, 2020; originally announced May 2020.

    Comments: 14 pages, 8 figures, as well as 10 pages and 18 figures of supplemental material

    Journal ref: Phys. Rev. B 102, 064431 (2020)

  38. arXiv:2004.02024  [pdf, other

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

    SiPM-matrix readout of two-phase argon detectors using electroluminescence in the visible and near infrared range

    Authors: The DarkSide collaboration, C. E. Aalseth, S. Abdelhakim, P. Agnes, R. Ajaj, I. F. M. Albuquerque, T. Alexander, A. Alici, A. K. Alton, P. Amaudruz, F. Ameli, J. Anstey, P. Antonioli, M. Arba, S. Arcelli, R. Ardito, I. J. Arnquist, P. Arpaia, D. M. Asner, A. Asunskis, M. Ave, H. O. Back, V. Barbaryan, A. Barrado Olmedo, G. Batignani , et al. (290 additional authors not shown)

    Abstract: Proportional electroluminescence (EL) in noble gases is used in two-phase detectors for dark matter searches to record (in the gas phase) the ionization signal induced by particle scattering in the liquid phase. The "standard" EL mechanism is considered to be due to noble gas excimer emission in the vacuum ultraviolet (VUV). In addition, there are two alternative mechanisms, producing light in the… ▽ More

    Submitted 26 February, 2021; v1 submitted 4 April, 2020; originally announced April 2020.

    Comments: 26 pages, 22 figures, 3 tables

    Journal ref: Eur. Phys. J. C (2021) 81: 153

  39. The liquid-argon scintillation pulseshape in DEAP-3600

    Authors: The DEAP collaboration, P. Adhikari, R. Ajaj, G. R. Araujoand M. Batygov, B. Beltran, C. E. Bina, M. G. Boulay, B. Broerman, J. F. Bueno, A. Butcher, B. Cai, M. Cárdenas-Montes, S. Cavuoti, Y. Chen, B. T. Cleveland, J. M. Corning, S. J. Daughertyand K. Dering, L. Doria, F. A. Duncan andM. Dunford, A. Erlandson, N. Fatemighomi, G. Fiorillo, A. Flower, R. J. Ford, R. Gagnon , et al. (76 additional authors not shown)

    Abstract: DEAP-3600 is a liquid-argon scintillation detector looking for dark matter. Scintillation events in the liquid argon (LAr) are registered by 255 photomultiplier tubes (PMTs), and pulseshape discrimination (PSD) is used to suppress electromagnetic background events. The excellent PSD performance of LAr makes it a viable target for dark matter searches, and the LAr scintillation pulseshape discussed… ▽ More

    Submitted 8 June, 2020; v1 submitted 27 January, 2020; originally announced January 2020.

    Journal ref: Eur. Phys. J. C 80, 303 (2020)

  40. arXiv:2001.08106  [pdf, other

    astro-ph.IM physics.ins-det

    Design and construction of a new detector to measure ultra-low radioactive-isotope contamination of argon

    Authors: The DarkSide Collaboration, C. E. Aalseth, S. Abdelhakim, F. Acerbi, P. Agnes, R. Ajaj, I. F. M. Albuquerque, T. Alexander, A. Alici, A. K. Alton, P. Amaudruz, F. Ameli, J. Anstey, P. Antonioli, M. Arba, S. Arcelli, R. Ardito, I. J. Arnquist, P. Arpaia, D. M. Asner, A. Asunskis, M. Ave, H. O. Back, A. Barrado Olmedo, G. Batignani , et al. (306 additional authors not shown)

    Abstract: Large liquid argon detectors offer one of the best avenues for the detection of galactic weakly interacting massive particles (WIMPs) via their scattering on atomic nuclei. The liquid argon target allows exquisite discrimination between nuclear and electron recoil signals via pulse-shape discrimination of the scintillation signals. Atmospheric argon (AAr), however, has a naturally occurring radioa… ▽ More

    Submitted 22 January, 2020; originally announced January 2020.

    Comments: 13 pages, 8 figures. Corresponding author: E. Sánchez García

  41. Cosmogenic Neutron Production at the Sudbury Neutrino Observatory

    Authors: B. Aharmim, S. N. Ahmed, A. E. Anthony, N. Barros, E. W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S. D. Biller, R. Bonventre, K. Boudjemline, M. G. Boulay, B. Cai, E. J. Callaghan, J. Caravaca, Y. D. Chan, D. Chauhan, M. Chen, B. T. Cleveland, G. A. Cox, R. Curley, X. Dai, H. Deng, F. B. Descamps, J. A. Detwiler , et al. (106 additional authors not shown)

    Abstract: Neutrons produced in nuclear interactions initiated by cosmic-ray muons present an irreducible background to many rare-event searches, even in detectors located deep underground. Models for the production of these neutrons have been tested against previous experimental data, but the extrapolation to deeper sites is not well understood. Here we report results from an analysis of cosmogenically prod… ▽ More

    Submitted 25 September, 2019; originally announced September 2019.

    Journal ref: Phys. Rev. D 100, 112005 (2019)

  42. arXiv:1905.05811  [pdf, other

    nucl-ex astro-ph.IM

    Electromagnetic Backgrounds and Potassium-42 Activity in the DEAP-3600 Dark Matter Detector

    Authors: R. Ajaj, G. R. Araujo, M. Batygov, B. Beltran, C. E. Bina, M. G. Boulay, B. Broerman, J. F. Bueno, P. M. Burghardt, A. Butcher, M. Cárdenas-Montes, S. Cavuoti, M. Chen, Y. Chen, B. T. Cleveland, K. Dering, F. A. Duncan, M. Dunford, A. Erlandson, N. Fatemighomi, G. Fiorillo, A. Flower, R. J. Ford, D. Gallacher, P. García Abia , et al. (66 additional authors not shown)

    Abstract: The DEAP-3600 experiment is searching for WIMP dark matter with a 3.3 tonne single phase liquid argon (LAr) target, located 2.1 km underground at SNOLAB. The experimental signature of dark matter interactions is keV-scale $^{40}$Ar nuclear recoils (NR) producing 128 nm LAr scintillation photons observed by PMTs. The largest backgrounds in DEAP-3600 are electronic recoils (ER) induced by $β$ and… ▽ More

    Submitted 14 May, 2019; originally announced May 2019.

    Journal ref: Phys. Rev. D 100, 072009 (2019)

  43. Measurement of neutron production in atmospheric neutrino interactions at the Sudbury Neutrino Observatory

    Authors: SNO Collaboration, B. Aharmim, S. N. Ahmed, A. E. Anthony, N. Barros, E. W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S. D. Biller, R. Bonventre, K. Boudjemline, M. G. Boulay, B. Cai, E. J. Callaghan, J. Caravaca, Y. D. Chan, D. Chauhan, M. Chen, B. T. Cleveland, G. A. Cox, X. Dai, H. Deng, F. B. Descamps, J. A. Detwiler , et al. (107 additional authors not shown)

    Abstract: Neutron production in GeV-scale neutrino interactions is a poorly studied process. We have measured the neutron multiplicities in atmospheric neutrino interactions in the Sudbury Neutrino Observatory experiment and compared them to the prediction of a Monte Carlo simulation using GENIE and a minimally modified version of GEANT4. We analyzed 837 days of exposure corresponding to Phase I, using pure… ▽ More

    Submitted 19 June, 2019; v1 submitted 1 April, 2019; originally announced April 2019.

    Journal ref: Phys. Rev. D 99, 112007 (2019)

  44. Triplet Lifetime in Gaseous Argon

    Authors: Michael Akashi-Ronquest, Amanda Bacon, Christopher Benson, Kolahal Bhattacharya, Thomas Caldwell, Joseph A. Formaggio, Dan Gastler, Brianna Grado-White, Jeff Griego, Michael Gold, Andrew Hime, Christopher M. Jackson, Stephen Jaditz, Chris Kachulis, Edward Kearns, Joshua R. Klein, Antonio Ledesma, Steve Linden, Frank Lopez, Sean MacMullin, Andrew Mastbaum, Jocelyn Monroe, James Nikkel, John Oertel, Gabriel D. Orebi Gann , et al. (5 additional authors not shown)

    Abstract: MiniCLEAN is a single-phase liquid argon dark matter experiment. During the initial cooling phase, impurities within the cold gas ($<$140 K) were monitored by measuring the scintillation light triplet lifetime, and ultimately a triplet lifetime of 3.480 $\pm$ 0.001 (stat.) $\pm$ 0.064 (sys.) $μ$s was obtained, indicating ultra-pure argon. This is the longest argon triplet time constant ever report… ▽ More

    Submitted 29 August, 2019; v1 submitted 15 March, 2019; originally announced March 2019.

  45. arXiv:1902.04048  [pdf, other

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

    Search for dark matter with a 231-day exposure of liquid argon using DEAP-3600 at SNOLAB

    Authors: R. Ajaj, P. -A. Amaudruz, G. R. Araujo, M. Baldwin, M. Batygov, B. Beltran, C. E. Bina, J. Bonatt, M. G. Boulay, B. Broerman, J. F. Bueno, P. M. Burghardt, A. Butcher, B. Cai, S. Cavuoti, M. Chen, Y. Chen, B. T. Cleveland, D. Cranshaw, K. Dering, J. DiGioseffo, L. Doria, F. A. Duncan, M. Dunford, A. Erlandson , et al. (77 additional authors not shown)

    Abstract: DEAP-3600 is a single-phase liquid argon (LAr) direct-detection dark matter experiment, operating 2 km underground at SNOLAB (Sudbury, Canada). The detector consists of 3279 kg of LAr contained in a spherical acrylic vessel. This paper reports on the analysis of a 758 tonne\cdot day exposure taken over a period of 231 live-days during the first year of operation. No candidate signal events are obs… ▽ More

    Submitted 4 July, 2019; v1 submitted 11 February, 2019; originally announced February 2019.

    Journal ref: Phys. Rev. D 100, 022004 (2019)

  46. Constraints on Neutrino Lifetime from the Sudbury Neutrino Observatory

    Authors: SNO Collaboration, B. Aharmim, S. N. Ahmed, A. E. Anthony, N. Barros, E. W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S. D. Biller, R. Bonventre, K. Boudjemline, M. G. Boulay, B. Cai, E. J. Callaghan, J. Caravaca, Y. D. Chan, D. Chauhan, M. Chen, B. T. Cleveland, G. A. Cox, X. Dai, H. Deng, F. B. Descamps, J. A. Detwiler , et al. (106 additional authors not shown)

    Abstract: The long baseline between the Earth and the Sun makes solar neutrinos an excellent test beam for exploring possible neutrino decay. The signature of such decay would be an energy-dependent distortion of the traditional survival probability which can be fit for using well-developed and high precision analysis methods. Here a model including neutrino decay is fit to all three phases of $^8$B solar n… ▽ More

    Submitted 3 December, 2018; originally announced December 2018.

    Journal ref: Phys. Rev. D 99, 032013 (2019)

  47. Tests of Lorentz invariance at the Sudbury Neutrino Observatory

    Authors: SNO Collaboration, B. Aharmim, S. N. Ahmed, A. E. Anthony, N. Barros, E. W. Beier, A. Bellerive, B. Beltran, M. Bergevin, S. D. Biller, E. Blucher, R. Bonventre, K. Boudjemline, M. G. Boulay, B. Cai, E. J. Callaghan, J. Caravaca, Y. D. Chan, D. Chauhan, M. Chen, B. T. Cleveland, G. A. Cox, X. Dai, H. Deng, F. B. Descamps , et al. (109 additional authors not shown)

    Abstract: Experimental tests of Lorentz symmetry in systems of all types are critical for ensuring that the basic assumptions of physics are well-founded. Data from all phases of the Sudbury Neutrino Observatory, a kiloton-scale heavy water Cherenkov detector, are analyzed for possible violations of Lorentz symmetry in the neutrino sector. Such violations would appear as one of eight possible signal types i… ▽ More

    Submitted 3 January, 2019; v1 submitted 31 October, 2018; originally announced November 2018.

    Journal ref: Phys. Rev. D 98, 112013 (2018)

  48. 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)

  49. arXiv:1805.04163  [pdf, other

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

    Hyper-Kamiokande Design Report

    Authors: Hyper-Kamiokande Proto-Collaboration, :, K. Abe, Ke. Abe, H. Aihara, A. Aimi, R. Akutsu, C. Andreopoulos, I. Anghel, L. H. V. Anthony, M. Antonova, Y. Ashida, V. Aushev, M. Barbi, G. J. Barker, G. Barr, P. Beltrame, V. Berardi, M. Bergevin, S. Berkman, L. Berns, T. Berry, S. Bhadra, D. Bravo-Berguño, F. d. M. Blaszczyk , et al. (291 additional authors not shown)

    Abstract: On the strength of a double Nobel prize winning experiment (Super)Kamiokande and an extremely successful long baseline neutrino programme, the third generation Water Cherenkov detector, Hyper-Kamiokande, is being developed by an international collaboration as a leading worldwide experiment based in Japan. The Hyper-Kamiokande detector will be hosted in the Tochibora mine, about 295 km away from th… ▽ More

    Submitted 28 November, 2018; v1 submitted 9 May, 2018; originally announced May 2018.

    Comments: 325 pages

  50. Design and Construction of the DEAP-3600 Dark Matter Detector

    Authors: P. -A. Amaudruz, M. Baldwin, M. Batygov, B. Beltran, C. E. Bina, D. Bishop, J. Bonatt, G. Boorman, M. G. Boulay, B. Broerman, T. Bromwich, J. F. Bueno, P. M. Burghardt, A. Butcher, B. Cai, S. Chan, M. Chen, R. Chouinard, S. Churchwell, B. T. Cleveland, D. Cranshaw, K. Dering, J. DiGioseffo, S. Dittmeier, F. A. Duncan , et al. (84 additional authors not shown)

    Abstract: The Dark matter Experiment using Argon Pulse-shape discrimination (DEAP) has been designed for a direct detection search for particle dark matter using a single-phase liquid argon target. The projected cross section sensitivity for DEAP-3600 to the spin-independent scattering of Weakly Interacting Massive Particles (WIMPs) on nucleons is $10^{-46}~\rm{cm}^{2}$ for a 100 GeV/$c^2$ WIMP mass with a… ▽ More

    Submitted 10 April, 2018; v1 submitted 5 December, 2017; originally announced December 2017.

    Comments: minor corrections in version 2. 70 pages, 24 figures, to be submitted to Astroparticle Physics Journal

    Journal ref: Astropart. Phys. 108 (2019) 1-23