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Tritium calibration of the LUX dark matter experiment

Physical Review D American Physical Society (APS) 93:7 (2016) 072009

Authors:

DS Akerib, HM Araújo, X Bai, AJ Bailey, J Balajthy, P Beltrame, EP Bernard, A Bernstein, TP Biesiadzinski, EM Boulton, A Bradley, R Bramante, SB Cahn, MC Carmona-Benitez, C Chan, JJ Chapman, AA Chiller, C Chiller, A Currie, JE Cutter, TJR Davison, L de Viveiros, A Dobi, JEY Dobson, E Druszkiewicz, BN Edwards, CH Faham, S Fiorucci, RJ Gaitskell, VM Gehman, C Ghag, KR Gibson, MGD Gilchriese, CR Hall, M Hanhardt, SJ Haselschwardt, SA Hertel, DP Hogan, M Horn, DQ Huang, CM Ignarra, M Ihm, RG Jacobsen, W Ji, K Kazkaz, D Khaitan, R Knoche, NA Larsen, C Lee, BG Lenardo, KT Lesko, A Lindote, MI Lopes, DC Malling, AG Manalaysay, RL Mannino, MF Marzioni, DN McKinsey, D-M Mei, J Mock, M Moongweluwan, JA Morad, A St. J. Murphy, C Nehrkorn, HN Nelson, F Neves, K O’Sullivan, KC Oliver-Mallory, RA Ott, KJ Palladino, M Pangilinan, EK Pease, P Phelps, L Reichhart, C Rhyne, S Shaw, TA Shutt, C Silva, VN Solovov, P Sorensen, S Stephenson, TJ Sumner, M Szydagis, DJ Taylor, W Taylor, BP Tennyson, PA Terman, DR Tiedt, WH To, M Tripathi, L Tvrznikova, S Uvarov, JR Verbus, RC Webb, JT White, TJ Whitis, MS Witherell, FLH Wolfs, SK Young, C Zhang
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DEAP-3600 Dark Matter Search

Nuclear and Particle Physics Proceedings Elsevier 273 (2016) 340-346

Authors:

M Kuźniak, DEAP Collaboration, P-A Amaudruz, M Batygov, B Beltran, J Bonatt, MG Boulay, B Broerman, JF Bueno, A Butcher, B Cai, M Chen, R Chouinard, BT Cleveland, K Dering, J DiGioseffo, F Duncan, T Flower, R Ford, P Giampa, P Gorel, K Graham, DR Grant, E Guliyev, AL Hallin, M Hamstra, P Harvey, CJ Jillings, I Lawson, O Li, P Liimatainen, P Majewski, AB McDonald, T McElroy, K McFarlane, J Monroe, A Muir, C Nantais, C Ng, AJ Noble, C Ouellet, K Palladino, P Pasuthip, SJM Peeters, T Pollmann, W Rau, F Retière, N Seeburn, K Singhrao, P Skensved, B Smith, T Sonley, J Tang, E Vázquez-Jáuregui, L Veloce, J Walding, M Ward
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Energy and flux measurements of ultra-high energy cosmic rays observed during the first ANITA flight

Astroparticle Physics Elsevier 77 (2016) 32-43

Authors:

H Schoorlemmer, K Belov, A Romero-Wolf, D García-Fernández, V Bugaev, SA Wissel, P Allison, J Alvarez-Muñiz, SW Barwick, JJ Beatty, DZ Besson, WR Binns, WR Carvalho, C Chen, P Chen, JM Clem, A Connolly, PF Dowkontt, MA DuVernois, RC Field, D Goldstein, PW Gorham, C Hast, T Huege, CL Heber, S Hoover, MH Israel, A Javaid, J Kowalski, J Lam, JG Learned, JT Link, E Lusczek, S Matsuno, BC Mercurio, C Miki, P Miočinović, K Mulrey, J Nam, CJ Naudet, J Ng, RJ Nichol, K Palladino, BF Rauch, J Roberts, K Reil, B Rotter, M Rosen, L Ruckman, D Saltzberg, D Seckel, D Urdaneta, GS Varner, AG Vieregg, D Walz, F Wu, E Zas
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Improved Limits on Scattering of Weakly Interacting Massive Particles from Reanalysis of 2013 LUX Data.

Physical review letters 116:16 (2016) 161301

Authors:

DS Akerib, HM Araújo, X Bai, AJ Bailey, J Balajthy, P Beltrame, EP Bernard, A Bernstein, TP Biesiadzinski, EM Boulton, A Bradley, R Bramante, SB Cahn, MC Carmona-Benitez, C Chan, JJ Chapman, AA Chiller, C Chiller, A Currie, JE Cutter, TJR Davison, L de Viveiros, A Dobi, JEY Dobson, E Druszkiewicz, BN Edwards, CH Faham, S Fiorucci, RJ Gaitskell, VM Gehman, C Ghag, KR Gibson, MGD Gilchriese, CR Hall, M Hanhardt, SJ Haselschwardt, SA Hertel, DP Hogan, M Horn, DQ Huang, CM Ignarra, M Ihm, RG Jacobsen, W Ji, K Kazkaz, D Khaitan, R Knoche, NA Larsen, C Lee, BG Lenardo, KT Lesko, A Lindote, MI Lopes, DC Malling, A Manalaysay, RL Mannino, MF Marzioni, DN McKinsey, D-M Mei, J Mock, M Moongweluwan, JA Morad, A St J Murphy, C Nehrkorn, HN Nelson, F Neves, K O'Sullivan, KC Oliver-Mallory, RA Ott, KJ Palladino, M Pangilinan, EK Pease, P Phelps, L Reichhart, C Rhyne, S Shaw, TA Shutt, C Silva, VN Solovov, P Sorensen, S Stephenson, TJ Sumner, M Szydagis, DJ Taylor, W Taylor, BP Tennyson, PA Terman, DR Tiedt, WH To, M Tripathi, L Tvrznikova, S Uvarov, JR Verbus, RC Webb, JT White, TJ Whitis, MS Witherell, FLH Wolfs, K Yazdani, SK Young, C Zhang, LUX Collaboration

Abstract:

We present constraints on weakly interacting massive particles (WIMP)-nucleus scattering from the 2013 data of the Large Underground Xenon dark matter experiment, including 1.4×10^{4}  kg day of search exposure. This new analysis incorporates several advances: single-photon calibration at the scintillation wavelength, improved event-reconstruction algorithms, a revised background model including events originating on the detector walls in an enlarged fiducial volume, and new calibrations from decays of an injected tritium β source and from kinematically constrained nuclear recoils down to 1.1 keV. Sensitivity, especially to low-mass WIMPs, is enhanced compared to our previous results which modeled the signal only above a 3 keV minimum energy. Under standard dark matter halo assumptions and in the mass range above 4  GeV c^{-2}, these new results give the most stringent direct limits on the spin-independent WIMP-nucleon cross section. The 90% C.L. upper limit has a minimum of 0.6 zb at 33  GeV c^{-2} WIMP mass.
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Results on the Spin-Dependent Scattering of Weakly Interacting Massive Particles on Nucleons from the Run 3 Data of the LUX Experiment.

Physical review letters 116:16 (2016) 161302

Authors:

DS Akerib, HM Araújo, X Bai, AJ Bailey, J Balajthy, P Beltrame, EP Bernard, A Bernstein, TP Biesiadzinski, EM Boulton, A Bradley, R Bramante, SB Cahn, MC Carmona-Benitez, C Chan, JJ Chapman, AA Chiller, C Chiller, A Currie, JE Cutter, TJR Davison, L de Viveiros, A Dobi, JEY Dobson, E Druszkiewicz, BN Edwards, CH Faham, S Fiorucci, RJ Gaitskell, VM Gehman, C Ghag, KR Gibson, MGD Gilchriese, CR Hall, M Hanhardt, SJ Haselschwardt, SA Hertel, DP Hogan, M Horn, DQ Huang, CM Ignarra, M Ihm, RG Jacobsen, W Ji, K Kazkaz, D Khaitan, R Knoche, NA Larsen, C Lee, BG Lenardo, KT Lesko, A Lindote, MI Lopes, DC Malling, A Manalaysay, RL Mannino, MF Marzioni, DN McKinsey, D-M Mei, J Mock, M Moongweluwan, JA Morad, A St J Murphy, C Nehrkorn, HN Nelson, F Neves, K O'Sullivan, KC Oliver-Mallory, RA Ott, KJ Palladino, M Pangilinan, EK Pease, P Phelps, L Reichhart, C Rhyne, S Shaw, TA Shutt, C Silva, VN Solovov, P Sorensen, S Stephenson, TJ Sumner, M Szydagis, DJ Taylor, W Taylor, BP Tennyson, PA Terman, DR Tiedt, WH To, M Tripathi, L Tvrznikova, S Uvarov, JR Verbus, RC Webb, JT White, TJ Whitis, MS Witherell, FLH Wolfs, K Yazdani, SK Young, C Zhang, LUX Collaboration

Abstract:

We present experimental constraints on the spin-dependent WIMP (weakly interacting massive particle)-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 1.4×10^{4}  kg day of fiducial exposure allows 90% C.L. upper limits to be set on the WIMP-neutron (WIMP-proton) cross section of σ_{n}=9.4×10^{-41}  cm^{2} (σ_{p}=2.9×10^{-39}  cm^{2}) at 33  GeV/c^{2}. The spin-dependent WIMP-neutron limit is the most sensitive constraint to date.
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