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A measurement of the mean electronic excitation energy of liquid xenon

The European Physical Journal C SpringerOpen 81:12 (2021) 1060

Authors:

Laura Baudis, Patricia Sanchez-Lucas, Kevin Thieme

Abstract:

Liquid xenon is a leader in rare-event physics searches. Accurate modeling of charge and light production is key for simulating signals and backgrounds in this medium. The signal- and background-production models in the Noble Element Simulation Technique (NEST) are presented. NEST is a simulation toolkit based on experimental data, fit using simple, empirical formulae for the average charge and light yields and their variations. NEST also simulates the final scintillation pulses and exhibits the correct energy resolution as a function of the particle type, the energy, and the electric fields. After vetting of NEST against raw data, with several specific examples pulled from XENON, ZEPLIN, LUX/LZ, and PandaX, we interpolate and extrapolate its models to draw new conclusions on the properties of future detectors (e.g., XLZD's), in terms of the best possible discrimination of electron(ic) recoil backgrounds from a potential nuclear recoil signal, especially WIMP dark matter. We discover that the oft-quoted value of 99.5% discrimination is overly conservative, demonstrating that another order of magnitude improvement (99.95% discrimination) can be achieved with a high photon detection efficiency (g1 ~ 15-20%) at reasonably achievable drift fields of 200-350 V/cm.Comment: 24 Pages, 6 Tables, 15 Figures, and 15 Equation
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Cosmic activation of Cresst’s CaWO4 crystals

Journal of Physics Conference Series IOP Publishing 2156:1 (2021) 012227

Authors:

H Kluck, G Angloher, G Benato, A Bento, A Bertolini, R Breier, C Bucci, L Canonica, A D’ Addabbo, S Di Lorenzo, L Einfalt, A Erb, FV Feilitzsch, N Ferreiro Iachellini, S Fichtinger, D Fuchs, A Fuss, A Garai, VM Ghete, P Gorla, S Gupta, D Hauff, M Ješkovský, J Jochum, M Kaznacheeva, A Kinast, H Kraus, A Langenkamper, M Mancuso, L Marini, V Mokina, A Nilima, M Olmi, T Ortmann, C Pagliarone, V Palušová, L Pattavina, F Petricca, W Potzel, P Povinec, F Pröbst, F Pucci, F Reindl, J Rothe, K Schäffner, J Schieck, D Schmiedmayer, S Schönert, C Schwertner, M Stahlberg, L Stodolsky, C Strandhagen, R Strauss, I Usherov, F Wagner, M Willers, V Zema
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Measurement of charge and light yields for Xe127 L-shell electron captures in liquid xenon

Physical Review D American Physical Society (APS) 104:11 (2021) 112001

Authors:

DJ Temples, J McLaughlin, J Bargemann, D Baxter, A Cottle, CE Dahl, WH Lippincott, A Monte, J Phelan
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Projected sensitivity of the LUX-ZEPLIN experiment to the two-neutrino and neutrinoless double β decays of Xe134

Physical Review C American Physical Society (APS) 104:6 (2021) 065501

Authors:

DS Akerib, AK Al Musalhi, SK Alsum, CS Amarasinghe, A Ames, TJ Anderson, N Angelides, HM Araújo, JE Armstrong, M Arthurs, X Bai, J Balajthy, S Balashov, J Bang, JW Bargemann, D Bauer, A Baxter, P Beltrame, EP Bernard, A Bernstein, A Bhatti, A Biekert, TP Biesiadzinski, HJ Birch, GM Blockinger, E Bodnia, B Boxer, CAJ Brew, P Brás, S Burdin, JK Busenitz, M Buuck, R Cabrita, MC Carmona-Benitez, M Cascella, C Chan, NI Chott, A Cole, MV Converse, A Cottle, G Cox, O Creaner, JE Cutter, CE Dahl, L de Viveiros, JEY Dobson, E Druszkiewicz, SR Eriksen, A Fan, S Fayer, NM Fearon, S Fiorucci, H Flaecher, ED Fraser, T Fruth, RJ Gaitskell, J Genovesi, C Ghag, E Gibson, S Gokhale, MGD van der Grinten, CB Gwilliam, CR Hall, SJ Haselschwardt, SA Hertel, M Horn, DQ Huang, MCI gnarra, O Jahangir, RS James, W Ji, J Johnson, AC Kaboth, AC Kamaha, K Kamdin, K Kazkaz, D Khaitan, A Khazov, I Khurana, D Kodroff, L Korley, EV Korolkova, H Kraus, S Kravitz, L Kreczko, B Krikler, VA Kudryavtsev, EA Leason, J Lee, DS Leonard, KT Lesko, C Levy, J Liao, J Lin, A Lindote, R Linehan, WH Lippincott, X Liu, MI Lopes, E López Asamar, B López Paredes, W Lorenzon, S Luitz, PA Majewski, A Manalaysay, L Manenti, RL Mannino, N Marangou, ME McCarthy, DN McKinsey, J McLaughlin, EH Miller, E Mizrachi, A Monte, ME Monzani, JA Morad, JD Morales Mendoza, E Morrison, BJ Mount, A St. J. Murphy, D Naim, A Naylor, C Nedlik, HN Nelson, F Neves, JA Nikoleyczik, A Nilima, I Olcina, KC Oliver-Mallory, S Pal, KJ Palladino, J Palmer, S Patton, N Parveen, EK Pease, B Penning, G Pereira, A Piepke, Y Qie, J Reichenbacher, CA Rhyne, A Richards, Q Riffard, GRC Rischbieter, R Rosero, P Rossiter, D Santone, ABMR Sazzad, RW Schnee, PR Scovell, S Shaw, TA Shutt, JJ Silk, C Silva, R Smith, M Solmaz, VN Solovov, P Sorensen, J Soria, I Stancu, A Stevens, K Stifter, B Suerfu, TJ Sumner, N Swanson, M Szydagis, WC Taylor, R Taylor, DJ Temples, PA Terman, DR Tiedt, M Timalsina, WH To, DR Tovey, M Tripathi, DR Tronstad, W Turner, U Utku, A Vaitkus, B Wang, JJ Wang, W Wang, JR Watson, RC Webb, RG White, TJ Whitis, M Williams, FLH Wolfs, D Woodward, CJ Wright, X Xiang, J Xu, M Yeh, P Zarzhitsky
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Projected sensitivities of the LUX-ZEPLIN experiment to new physics via low-energy electron recoils

Physical Review D American Physical Society 104:9 (2021) 92009

Authors:

Ds Akerib, Ak Al Musalhi, Sk Alsum, A Cottle, NM Fearon, E Gibson, Hans Kraus, KJ Palladino, A Stevens

Abstract:

LUX-ZEPLIN is a dark matter detector expected to obtain world-leading sensitivity to weakly-interacting massive particles interacting via nuclear recoils with a ∼7-tonne xenon target mass. This paper 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 millicharge, both for pp-chain solar neutrinos, 3) an axion flux generated by the Sun, 4) axionlike particles forming the Galactic dark matter, 5) hidden photons, 6) mirror dark matter, and 7) leptophilic dark matter. World-leading sensitivities are expected in each case, a result of the large 5.6 t 1000 d exposure and low expected rate of electron-recoil backgrounds in the <100 keV energy regime. A consistent signal generation, background model and profile-likelihood analysis framework is used throughout.
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