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251. Projected sensitivity of the LUX-ZEPLIN experiment to the 0νββ decay of Xe136

Author: Akerib, DS, Akerlof, CW, Alqahtani, A, Alsum, SK, Anderson, TJ, Angelides, N, Araújo, HM, Armstrong, JE, Arthurs, M, Bai, X, Balajthy, J, Balashov, S, Bang, J, Baxter, A, Bensinger, J, Bernard, EP, Bernstein, A, Bhatti, A, Biekert, A, Biesiadzinski, TP, Birch, HJ, Boast, KE, Boxer, B, Brás, P, Buckley, JH, Bugaev, VV, Burdin, S, Busenitz, JK, Cabrita, R, Carels, C, Carlsmith, DL, Carmona-Benitez, MC, Cascella, M, Chan, C, Chott, NI, Cole, A, Cottle, A, Cutter, JE, Dahl, CE, de Viveiros, L, Dobson, JEY, Druszkiewicz, E, Edberg, TK, Eriksen, SR, Fan, A, Fiorucci, S, Flaecher, H, Fraser, ED, Fruth, T, Gaitskell, RJ, Genovesi, J, Ghag, C, Gibson, E, Gilchriese, MGD, Gokhale, S, van der Grinten, MGD, Hall, CR, Harrison, A, Haselschwardt, SJ, Hertel, SA, Hor, JY-K, Horn, M, Huang, DQ, Ignarra, CM, Jahangir, O, Ji, W, Johnson, J, Kaboth, AC, Kamaha, AC, Kamdin, K, Kazkaz, K, Khaitan, D, Khazov, A, Khurana, I, Kocher, CD, Korley, L, Korolkova, EV, Kras, J, Kraus, H, Kravitz, S, Kreczko, L, Krikler, B, Kudryavtsev, VA, Leason, EA, Lee, J, Leonard, DS, Lesko, KT, Levy, C, Li, J, Liao, J, Liao, F-T, Lin, J, Lindote, A, Linehan, R, Lippincott, WH, Liu, R, Liu, X, Loniewski, C, Lopes, MI, and Paredes, B López
Subjects: Particle and Plasma Physics, Molecular, Nuclear, nucl-ex, Atomic, Nuclear & Particles Physics
Abstract: The LUX-ZEPLIN (LZ) experiment will enable a neutrinoless double β decay search in parallel to the main science goal of discovering dark matter particle interactions. We report the expected LZ sensitivity to Xe136 neutrinoless double β decay, taking advantage of the significant (>600 kg) Xe136 mass contained within the active volume of LZ without isotopic enrichment. After 1000 live-days, the median exclusion sensitivity to the half-life of Xe136 is projected to be 1.06×1026 years (90% confidence level), similar to existing constraints. We also report the expected sensitivity of a possible subsequent dedicated exposure using 90% enrichment with Xe136 at 1.06×1027 years.
Published: 2020

252. Projected sensitivity of the LUX-ZEPLIN experiment to the 0 ν β β decay of 136 Xe

Author: Akerib, DS, Akerlof, CW, Alqahtani, A, Alsum, SK, Anderson, TJ, Angelides, N, Araújo, HM, Armstrong, JE, Arthurs, M, Bai, X, Balajthy, J, Balashov, S, Bang, J, Baxter, A, Bensinger, J, Bernard, EP, Bernstein, A, Bhatti, A, Biekert, A, Biesiadzinski, TP, Birch, HJ, Boast, KE, Boxer, B, Brás, P, Buckley, JH, Bugaev, VV, Burdin, S, Busenitz, JK, Cabrita, R, Carels, C, Carlsmith, DL, Carmona-Benitez, MC, Cascella, M, Chan, C, Chott, NI, Cole, A, Cottle, A, Cutter, JE, Dahl, CE, De Viveiros, L, Dobson, JEY, Druszkiewicz, E, Edberg, TK, Eriksen, SR, Fan, A, Fiorucci, S, Flaecher, H, Fraser, ED, Fruth, T, Gaitskell, RJ, Genovesi, J, Ghag, C, Gibson, E, Gilchriese, MGD, Gokhale, S, Van der Grinten, MGD, Hall, CR, Harrison, A, Haselschwardt, SJ, Hertel, SA, Hor, JY-K, Horn, M, Huang, DQ, Ignarra, CM, Jahangir, O, Ji, W, Johnson, J, Kaboth, AC, Kamaha, AC, Kamdin, K, Kazkaz, K, Khaitan, D, Khazov, A, Khurana, I, Kocher, CD, Korley, L, Korolkova, EV, Kras, J, Kraus, H, Kravitz, S, Kreczko, L, Krikler, B, Kudryavtsev, VA, Leason, EA, Lee, J, Leonard, DS, Lesko, KT, Levy, C, Li, J, Liao, J, Liao, F-T, Lin, J, Lindote, A, Linehan, R, Lippincott, WH, Liu, R, Liu, X, Loniewski, C, Lopes, MI, López Paredes, B, Lorenzon, W, Luitz, S, Lyle, JM, Majewski, PA, Manalaysay, A, Manenti, L, Mannino, RL, Marangou, N, Marzioni, MF, McKinsey, DN, McLaughlin, J, Meng, Y, Miller, EH, Mizrachi, E, Monte, A, Monzani, ME, Morad, JA, Morrison, E, Mount, BJ, Murphy, ASJ, Naim, D, Naylor, A, Nedlik, C, Nehrkorn, C, Nelson, HN, Neves, F, Nikoleyczik, JA, Nilima, A, O'Sullivan, K, Olcina, I, Oliver-Mallory, KC, Pal, S, Palladino, KJ, Palmer, J, Parveen, N, Pease, EK, Penning, B, Pereira, G, Pushkin, K, Reichenbacher, J, Rhyne, CA, Riffard, Q, Rischbieter, GRC, Rosero, R, Rossiter, P, Rutherford, G, Santone, D, Sazzad, ABMR, Schnee, RW, Schubnell, M, Seymour, D, Shaw, S, Shutt, TA, Silk, JJ, Silva, C, Smith, R, Solmaz, M, Solovov, VN, Sorensen, P, Stancu, I, Stevens, A, Stifter, K, Sumner, TJ, Swanson, N, Szydagis, M, Tan, M, Taylor, WC, Taylor, R, Temples, DJ, Terman, PA, Tiedt, DR, Timalsina, M, Tomás, A, Tripathi, M, Tronstad, DR, Turner, W, Tvrznikova, L, Utku, U, Vacheret, A, Vaitkus, A, Wang, JJ, Wang, W, Watson, JR, Webb, RC, White, RG, Whitis, TJ, Wolfs, FLH, Woodward, D, Xiang, X, Xu, J, Yeh, M, and Zarzhitsky, P
Subjects: nucl-ex
Abstract: The LUX-ZEPLIN (LZ) experiment will enable a neutrinoless double β 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 β decay, taking advantage of the significant ( > 600 kg) 136 Xe mass contained within the active volume of LZ without isotopic enrichment. After 1000 live-days, the median exclusion sensitivity to the half-life of 136 Xe is projected to be 1.06 × 10 26 years (90% confidence level), similar to existing constraints. We also report the expected sensitivity of a possible subsequent dedicated exposure using 90% enrichment with 136 Xe at 1.06 × 10 27 years.
Published: 2020

253. Sentinel Node Status is the Most Important Prognostic Information for Clinical Stage IIB and IIC Melanoma Patients

Author: Matheus de Melo Lôbo, Eduardo Doria Filho, Andrea Schiavinato Jafelicci, Isabela Bartelli Fonseca, Marcus Vitor Nunes Lindote, Vinicius Fernando Calsavara, João Pedreira Duprat Neto, Marcus Rodrigo Monteiro, Eduardo Bertolli, and Clovis Antonio Lopes Pinto
Subjects: Oncology, medicine.medical_specialty, Skin Neoplasms, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, medicine, Humans, Risk factor, Melanoma, Neoplasm Staging, Retrospective Studies, Proportional hazards model, business.industry, Sentinel Lymph Node Biopsy, Retrospective cohort study, Sentinel node, Nomogram, medicine.disease, Prognosis, Primary tumor, 030220 oncology & carcinogenesis, Cohort, 030211 gastroenterology & hepatology, Surgery, Sentinel Lymph Node, business
Abstract: Sentinel node biopsy (SNB) for melanoma patients has been questioned. We aimed to study high-risk stage II melanoma patients who underwent SNB to determine what the prognostic factors regarding recurrence and mortality were, and evaluate how relevant SNB status is in this scenario. This was a retrospective analysis of clinical stage IIB/IIC melanoma patients who underwent SNB from 2000 to 2015 in a single institution. Prognostic factors related to distant recurrence-free survival (DRFS) and melanoma-specific survival (MSS) were assessed from multiple Cox regression. Relevant variables were used to create risk predictor nomograms for DRFS and MSS. From 1213 SNB, 259 were performed for clinical stage IIB/IIC melanoma patients. SNB status was the most important variable for both endpoints. Patients with positive SNB presented median DRFS of 35.73 months (95% CI 21.38–50.08, SE 7.32) and median MSS of 66.4 months (95% CI 29.76–103.03, SE 18.69), meanwhile both median DRFS and MSS were not achieved for those with negative SNB (logrank
Published: 2020

254. Investigation of background electron emission in the LUX detector

Author: D. J. Taylor, M. G. D. Gilchriese, V. Velan, U. Utku, A. Manalaysay, A. Fan, S. Shaw, L. Tvrznikova, P. A. Terman, T. J. Sumner, J. T. White, Ethan Bernard, H. N. Nelson, W. H. To, D. Woodward, W. C. Taylor, J. Balajthy, B. G. Lenardo, M. S. Witherell, O. Jahangir, P. Brás, Robert A. Taylor, Q. Riffard, Carl Gwilliam, Daniel McKinsey, R. G. Jacobsen, Jilei Xu, C. Nehrkorn, T. J. Whitis, M. Solmaz, X. Bai, D. Khaitan, S. Alsum, M. C. Carmona-Benitez, S. A. Hertel, W. Ji, K. Kamdin, E. Druszkiewicz, M. Moongweluwan, Antonin Vacheret, F. L. H. Wolfs, P. Rossiter, K. J. Palladino, E. M. Boulton, R. L. Mannino, Elena Korolkova, G. R. C. Rischbieter, K. C. Oliver-Mallory, S. J. Haselschwardt, D. Byram, T. A. Shutt, J. A. Morad, J. Lin, D. R. Tiedt, Henrique Araujo, E. K. Pease, D. P. Hogan, B. Boxer, K. T. Lesko, V. N. Solovov, E. Leason, C. R. Hall, Matthew Szydagis, D. S. Akerib, S. Uvarov, R. C. Webb, M. Horn, L. de Viveiros, A. St. J. Murphy, P. Sorensen, Adam Bernstein, B. P. Tennyson, A. Naylor, M.I. Lopes, D. Q. Huang, Kareem Kazkaz, V. A. Kudryavtsev, C. M. Ignarra, T. P. Biesiadzinski, J. Liao, Sergey Burdin, C. Rhyne, A. Baxter, R. J. Gaitskell, A. Lindote, S. Fiorucci, J. E. Cutter, Chao Zhang, C. Ghag, N. Marangou, F. Neves, Dongming Mei, Catarina Silva, C. Chan, S. Kravitz, A. Nilima, and Science and Technology Facilities Council (STFC)
Subjects: Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Dark matter, FOS: Physical sciences, chemistry.chemical_element, Electron, Photoionization, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, Atomic, 01 natural sciences, Physics, Particles & Fields, ENERGY, XENON, Particle and Plasma Physics, Xenon, DEPENDENCE, Impurity, LIQUID ARGON, 0103 physical sciences, Nuclear, FIELD, 010306 general physics, physics.ins-det, Physics, Quantum Physics, Science & Technology, 010308 nuclear & particles physics, Detector, Molecular, Instrumentation and Detectors (physics.ins-det), Photoelectric effect, Nuclear & Particles Physics, STATE, KRYPTON, chemistry, Physical Sciences, Atomic physics, Luminescence, Astronomical and Space Sciences
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 dark matter experiment. We characterize different electron populations based on their emission intensities and their correlations with preceding energy depositions in the detector. By studying the background under different experimental conditions, we identified the leading emission mechanisms, including photoionization and the photoelectric effect induced by the xenon luminescence, delayed emission of electrons trapped under the liquid surface, capture and release of drifting electrons by impurities, and grid electron emission. We discuss how these backgrounds can be mitigated in LUX and future xenon-based dark matter experiments., 17 pages, 13 figures
Published: 2020
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255. An effective field theory analysis of the first LUX dark matter search

Author: Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, Viveiros, LD, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Larsen, NA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, McKinsey, DN, Mei, D-M, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, Zhang, C, Science and Technology Facilities Council (STFC), and The Royal Society
Subjects: Astrophysics::Instrumentation and Methods for Astrophysics, astro-ph.CO
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 science run. Tension between experiments and the absence of a definitive positive detection suggest it would be prudent to search for WIMPs outside the standard spin-independent/spin-dependent paradigm. Recent theoretical work has identified a complete basis of 14 independent effective field theory (EFT) operators to describe WIMP-nucleon interactions. In addition to spin-independent and spin-dependent nuclear responses, these operators can produce novel responses such as angular-momentum-dependent and spin-orbit couplings. Here we report on a search for all 14 of these EFT couplings with data from LUX's first science run. Limits are placed on each coupling as a function of WIMP mass.
Published: 2020

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

Author: A. Biekert, V. A. Kudryavtsev, M. G. D. van der Grinten, C. M. Ignarra, Henrique Araujo, D. Seymour, E. Leason, B. Boxer, A. Naylor, J. McLaughlin, J. Y.K. Hor, A. Murphy, J. E. Cutter, J. Reichenbacher, C. R. Hall, G. Pereira, M. Horn, C. D. Kocher, K. Pushkin, X. Bai, J. Johnson, D. Q. Huang, H. Kraus, C. Carels, X. Liu, J. M. Lyle, T. K. Edberg, A. Lindote, T. Fruth, M. C. Carmona-Benitez, Q. Riffard, L. Kreczko, D. Woodward, M. F. Marzioni, T.M. Stiegler, Juhyeong Lee, T. P. Biesiadzinski, A. Cottle, A. Tomás, S. Balashov, W.T. Kim, F. Neves, K. E. Boast, A. B.M.R. Sazzad, L. Korley, K. Kamdin, Murdock Gilchriese, David Leonard, Robert A. Taylor, Catarina Silva, C. E. Dahl, M. E. Monzani, A. Angelides, D. Temples, P. Brás, M. Solmaz, A. Manalaysay, D. Khaitan, P. Majewski, E. Morrison, T. J. Whitis, Matthew Szydagis, J. Genovesi, J.P. Rodrigues, J. Busenitz, Benjamin Krikler, A. Fan, C. Rhyne, R. J. Gaitskell, J. E. Armstrong, A. Stevens, Ethan Bernard, Bjoern Penning, Michael Schubnell, J. H. Buckley, Ross G. White, I. Stancu, L. Tvrznikova, P.R. Scovell, Daniel McKinsey, W. Ji, K. J. Palladino, I. Olcina, J. A. Morad, H. N. Nelson, N. Marangou, J. A. Nikoleyczik, R. L. Mannino, Michele Cascella, Sergey Burdin, A. Baxter, C. Nedlik, C. Ghag, P. Rossiter, C. Chan, M.I. Lopes, E. K. Pease, V. Bugaev, S. Kravitz, V. N. Solovov, S. Gokhale, S. Alsum, Julie Harrison, K. C. Oliver-Mallory, J. R. Watson, C. Levy, E. H. Miller, F.-T. Liao, S. Luitz, J. Lin, J. Yin, A. Piepke, S. Hans, J. Liao, S. J. Haselschwardt, F. L. H. Wolfs, A. Nilima, S. Uvarov, G. Rutherford, D. R. Tiedt, J. Kras, R. Linehan, Laura Manenti, K. T. Lesko, D. Naim, B. J. Mount, D. S. Akerib, T. A. Shutt, J. J. Wang, J. E. Y. Dobson, L.D. Viveiros, C. Loniewski, S. Shaw, Wolfgang Lorenzon, Elena Korolkova, H. Flaecher, M. Timalsina, O. Jahangir, P. Sorensen, Yue Meng, W.H. Lippincott, A. Cole, K. Stifter, S. Fiorucci, P. A. Terman, R. Liu, Richard Rosero, R. C. Webb, Antonin Vacheret, M. Arthurs, A. Khazov, J.J. Silk, W. C. Taylor, J. Balajthy, A. C. Kaboth, B.L. Paredes, R. W. Schnee, S. Pal, G.R.C. Rischbieter, C. Nehrkorn, S. A. Hertel, E. Druszkiewicz, U. Utku, Mani Tripathi, J. Li, Carl W. Akerlof, Duncan Carlsmith, and Science and Technology Facilities Council (STFC)
Subjects: Physics - Instrumentation and Detectors, Dark matter, FOS: Physical sciences, Flux, chemistry.chemical_element, Cosmic ray, Astronomy & Astrophysics, 01 natural sciences, Physics, Particles & Fields, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Lead shielding, Xenon, Gamma spectroscopy, 0103 physical sciences, 0201 Astronomical and Space Sciences, 010306 general physics, Underground, physics.ins-det, Low background, Physics, Science & Technology, Radiation, 010308 nuclear & particles physics, hep-ex, Gamma rays, Gamma ray, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), Nuclear & Particles Physics, chemistry, Physical Sciences, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, Decay chain
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 $\gamma$-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 within the Davis campus at the Sanford Underground Research Facility, Lead, South Dakota, at the 4,850-foot level. In order to characterise the cavern background, in-situ $\gamma$-ray measurements were taken with a sodium iodide detector in various locations and with lead shielding. The integral count rates (0--3300~keV) varied from 596~Hz to 1355~Hz for unshielded measurements, corresponding to a total flux in the cavern of $1.9\pm0.4$~$\gamma~$cm$^{-2}$s$^{-1}$. The resulting activity in the walls of the cavern can be characterised as $220\pm60$~Bq/kg of $^{40}$K, $29\pm15$~Bq/kg of $^{238}$U, and $13\pm3$~Bq/kg of $^{232}$Th., Comment: 11 pages, 9 figures
Published: 2020
Full Text: View/download PDF

257. Projected WIMP sensitivity of the LUX-ZEPLIN dark matter experiment

Author: Akerib, DS, Akerlof, CW, Alsum, SK, Araújo, HM, Arthurs, M, Bai, X, Bailey, AJ, Balajthy, J, Balashov, S, Bauer, D, Belle, J, Beltrame, P, Benson, T, Bernard, EP, Biesiadzinski, TP, Boast, KE, Boxer, B, Brás, P, Buckley, JH, Bugaev, VV, Burdin, S, Busenitz, JK, Carels, C, Carlsmith, DL, Carlson, B, Carmona-Benitez, MC, Chan, C, Cherwinka, JJ, Cole, A, Cottle, A, Craddock, WW, Currie, A, Cutter, JE, Dahl, CE, de Viveiros, L, Dobi, A, Dobson, JEY, Druszkiewicz, E, Edberg, TK, Edwards, WR, Fan, A, Fayer, S, Fiorucci, S, Fruth, T, Gaitskell, RJ, Genovesi, J, Ghag, C, Gilchriese, MGD, van der Grinten, MGD, Hall, CR, Hans, S, Hanzel, K, Haselschwardt, SJ, Hertel, SA, Hillbrand, S, Hjemfelt, C, Hoff, MD, Hor, JY-K, Huang, DQ, Ignarra, CM, Ji, W, Kaboth, AC, Kamdin, K, Keefner, J, Khaitan, D, Khazov, A, Kim, YD, Kocher, CD, Korolkova, EV, Kraus, H, Krebs, HJ, Kreczko, L, Krikler, B, Kudryavtsev, VA, Kyre, S, Lee, J, Lenardo, BG, Leonard, DS, Lesko, KT, Levy, C, Li, J, Liao, J, Liao, F-T, Lin, J, Lindote, A, Linehan, R, Lippincott, WH, Liu, X, Lopes, MI, Paredes, B López, Lorenzon, W, Luitz, S, Lyle, JM, Majewski, P, Manalaysay, A, Mannino, RL, Maupin, C, McKinsey, DN, Meng, Y, and Miller, EH
Subjects: Quantum Physics, Particle and Plasma Physics, hep-ex, astro-ph.CO, Molecular, Nuclear, Atomic, Nuclear & Particles Physics, physics.ins-det, Astronomical and Space Sciences, astro-ph.IM
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 the dark matter in our galactic halo. In this paper, the projected WIMP sensitivity of LZ is presented based on the latest background estimates and simulations of the detector. For a 1000 live day run using a 5.6-tonne fiducial mass, LZ is projected to exclude at 90% confidence level spin-independent WIMP-nucleon cross sections above 1.4×10-48 cm2 for a 40 GeV/c2 mass WIMP. Additionally, a 5σ discovery potential is projected, reaching cross sections below the exclusion limits of recent experiments. For spin-dependent WIMP-neutron(-proton) scattering, a sensitivity of 2.3×10-43 cm2 (7.1×10-42 cm2) for a 40 GeV/c2 mass WIMP is expected. With underground installation well underway, LZ is on track for commissioning at SURF in 2020.
Published: 2020

258. Measurement of the gamma ray background in the Davis cavern at the Sanford Underground Research Facility

Author: Akerib, DS, Akerlof, CW, Alsum, SK, Angelides, N, Araújo, HM, Armstrong, JE, Arthurs, M, Bai, X, Balajthy, J, Balashov, S, Baxter, A, Bernard, EP, Biekert, A, Biesiadzinski, TP, Boast, KE, Boxer, B, Brás, P, Buckley, JH, Bugaev, VV, Burdin, S, Busenitz, JK, Carels, C, Carlsmith, DL, Carmona-Benitez, MC, Cascella, M, Chan, C, Cole, A, Cottle, A, Cutter, JE, Dahl, CE, de Viveiros, L, Dobson, JEY, Druszkiewicz, E, Edberg, TK, Fan, A, Fiorucci, S, Flaecher, H, Fruth, T, Gaitskell, RJ, Genovesi, J, Ghag, C, Gilchriese, MGD, Gokhale, S, van der Grinten, MGD, Hall, CR, Hans, S, Harrison, J, Haselschwardt, SJ, Hertel, SA, Hor, JYK, Horn, M, Huang, DQ, Ignarra, CM, Jahangir, O, Ji, W, Johnson, J, Kaboth, AC, Kamdin, K, Khaitan, D, Khazov, A, Kim, WT, Kocher, CD, Korley, L, Korolkova, EV, Kras, J, Kraus, H, Kravitz, SW, Kreczko, L, Krikler, B, Kudryavtsev, VA, Leason, EA, Lee, J, Leonard, DS, Lesko, KT, Levy, C, Li, J, Liao, J, Liao, FT, Lin, J, Lindote, A, Linehan, R, Lippincott, WH, Liu, R, Liu, X, Loniewski, C, Lopes, MI, López Paredes, B, Lorenzon, W, Luitz, S, Lyle, JM, Majewski, PA, Manalaysay, A, Manenti, L, Mannino, RL, Marangou, N, Marzioni, MF, McKinsey, DN, McLaughlin, J, Meng, Y, and Miller, EH
Subjects: Radiation, hep-ex, Gamma rays, Molecular, Atomic, Nuclear & Particles Physics, Particle and Plasma Physics, Gamma spectroscopy, Dark matter, Nuclear, Underground, physics.ins-det, Astronomical and Space Sciences, Low background
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 40K and the 238U and 232Th decay chains in the surrounding rock. The LUX-ZEPLIN (LZ) experiment will search for dark matter particle interactions with a liquid xenon TPC located within the Davis campus at the Sanford Underground Research Facility, Lead, South Dakota, at the 4850-foot level. In order to characterise the cavern background, in-situ γ-ray measurements were taken with a sodium iodide detector in various locations and with lead shielding. The integral count rates (0–3300 keV) varied from 596 Hz to 1355 Hz for unshielded measurements, corresponding to a total flux from the cavern walls of 1.9 ± 0.4 γ cm−2s−1. The resulting activity in the walls of the cavern can be characterised as 220 ± 60 Bq/kg of 40K, 29 ± 15 Bq/kg of 238U, and 13 ± 3 Bq/kg of 232Th.
Published: 2020

259. Projected WIMP sensitivity of the LUX-ZEPLIN dark matter experiment

Author: Akerib, D.S., Akerlof, C.W., Alsum, S.K., Araújo, H.M., Arthurs, M., Bai, X., Bailey, A.J., Balajthy, J., Balashov, S., Bauer, D., Belle, J., Beltrame, P., Benson, T., Bernard, E.P., Biesiadzinski, T.P., Boast, K.E., Boxer, B., Brás, P., Buckley, J.H., Bugaev, VV., Burdin, S., Busenitz, J.K., Carels, C., Carlsmith, D.L., Carlson, B., Carmona-Benitez, M.C., Chan, C., Cherwinka, J.J., Cole, A., Cottle, A., Craddock, W.W., Currie, A., Cutter, J.E., Dahl, C.E., Viveiros, L.D., Dobi, A., Dobson, J.E.Y., Druszkiewicz, E., Edberg, T.K., Edwards, W.R., Fan, A., Fayer, S., Fiorucci, S., Fruth, T., Gaitskell, R.J., Genovesi, J., Ghag, C., Gilchriese, M.G.D., Grinten, M.G.D.V.D., Hall, C.R., Hans, S., Hanzel, K., Haselschwardt, S.J., Hertel, S.A., Hillbrand, S., Hjemfelt, C., Hoff, M.D., Hor, J.Y.-K., Huang, D.Q., Ignarra, C.M., Ji, W., Kaboth, A.C., Kamdin, K., Keefner, J., Khaitan, D., Khazov, A., Kim, Y.D., Kocher, C.D., Korolkova, E.V., Kraus, H., Krebs, H.J., Kreczko, L., Krikler, B., Kudryavtsev, V.A., Kyre, S., Lee, J., Lenardo, B.G., Leonard, D.S., Lesko, K.T., Levy, C., Li, J., Liao, J., Liao, F.-T., Lin, J., Lindote, A., Linehan, R., Lippincott, W.H., Liu, X., Lopes, M.I., Paredes, B.L., Lorenzon, W., Luitz, S., Lyle, J.M., Majewski, P., Manalaysay, A., Mannino, R.L., Maupin, C., McKinsey, D.N., Meng, Y., Miller, E.H., Mock, J., Monzani, M.E., Morad, J.A., Morrison, E., Mount, B.J., Murphy, A.S.J., Nelson, H.N., Neves, F., Nikoleyczik, J., O'Sullivan, K., Olcina, I., Olevitch, M.A., Oliver-Mallory, K.C., Palladino, K.J., Patton, S.J., Pease, E.K., Penning, B., Piepke, A., Powell, S., Preece, R.M., Pushkin, K., Ratcliff, B.N., Reichenbacher, J., Rhyne, C.A., Richards, A., Rodrigues, J.P., Rosero, R., Rossiter, P., Saba, J.S., Sarychev, M., Schnee, R.W., Schubnell, M., Scovell, P.R., Shaw, S., Shutt, T.A., Silk, J.J., Silva, C., Skarpaas, K., Skulski, W., Solmaz, M., Solovov, V.N., Sorensen, P., Stancu, I., Stark, M.R., Stiegler, T.M., Stifter, K., Szydagis, M., Taylor, W.C., Taylor, R., Taylor, D.J., Temples, D., Terman, P.A., Thomas, K.J., Timalsina, M., To, W.H., Tomás, A., Tope, T.E., Tripathi, M., Tull, C.E., Tvrznikova, L., Utku, U., Va'vra, J., Vacheret, A., Verbus, J.R., Voirin, E., Waldron, W.L., Watson, J.R., Webb, R.C., White, D.T., Whitis, T.J., Wisniewski, W.J., Witherell, M.S., Wolfs, F.L.H., Woodward, D., Worm, S.D., Yeh, M., Yin, J., Young, I., and LUX-ZEPLIN, Collaboration
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 the dark matter in our galactic halo. In this paper, the projected WIMP sensitivity of LZ is presented based on the latest background estimates and simulations of the detector. For a 1000 live day run using a 5.6-tonne fiducial mass, LZ is projected to exclude at 90% confidence level spin-independent WIMP-nucleon cross sections above 1.4 × 10-48cm2 for a 40 GeV/c2 mass WIMP. \ud Additionally, a 5σ discovery potential is projected, reaching cross sections below the exclusion limits of recent experiments. For spin-dependent WIMP-neutron(-proton) scattering, a sensitivity of 2.3 × 10−43 cm2 (7.1 × 10−42 cm2) for a 40 GeV/c2\ud mass WIMP is expected. With underground installation well underway, LZ is on track for commissioning at SURF in 2020.
Published: 2020

260. Extending light WIMP searches to single scintillation photons in LUX

Author: Akerib, D. S., Alsum, S., Ara��jo, H. M., Bai, X., Bailey, A. J., Balajthy, J., Baxter, A., Beltrame, P., Bernard, E. P., Bernstein, A., Biesiadzinski, T. P., Boulton, E. M., Boxer, B., Br��s, P., Burdin, S., Byram, D., Cahn, S. B., Carmona-Benitez, M. C., Chan, C., Chiller, A. A., Chiller, C., Currie, A., Cutter, J. E., de Viveiros, L., Dobi, A., Dobson, J. E. Y., Druszkiewicz, E., Edwards, B. N., Faham, C. H., Fallon, S. R., Fan, A., Fiorucci, S., Gaitskell, R. J., Gehman, V. M., Genovesi, J., Ghag, C., Gibson, K. R., Gilchriese, M. G. D., Grace, E., Gwilliam, C., Hall, C. R., Hanhardt, M., Haselschwardt, S. J., Hertel, S. A., Hogan, D. P., Horn, M., Huang, D. Q., Ignarra, C. M., Jacobsen, R. G., Jahangir, O., Ji, W., Kamdin, K., Kazka, K., Khaitan, D., Knoche, R., Korolkova, E. V., Kravitz, S., Kudryavtsev, V. A., Larsen, N. A., Leason, E., Lee, C., Lenardo, B. G., Lesko, K. T., Levy, C., Liao, J., Lin, J., Lindote, A., Lopes, M. I., L��pez-Paredes, B., Manalaysay, A., Mannino, R. L., Marangou, N., Marzioni, M. F., McKinsey, D. N., Mei, D. M., Mock, J., Moongweluwan, M., Morad, J. A., Murphy, A. St. J., Naylor, A., Nehrkorn, C., Nelson, H. N., Neves, F., Nilima, A., O'Sullivan, K., Oliver-Mallory, K. C., Palladino, K. J., Pease, E. K., Reichhart, L., Riffard, Q., Rischbieter, G. R. C., Rossiter, P., Shaw, S., Shutt, T. A., Silva, C., Solmaz, M., Solovov, V. N., Sorensen, P., Stephenson, S., Sumner, T. J., Szydagis, M., Taylor, D. J., Taylor, R., Taylor, W. C., Tennyson, B. P., Terman, P. A., Tiedt, D. R., To, W. H., Tripathi, M., Tvrznikova, L., Utku, U., Uvarov, S., Vacheret, A., Velan, V., Verbus, J. R., Webb, R. C., White, J. T., Whitis, T. J., Witherell, M. S., Wolfs, F. L. H., Woodward, D., Xu, J., Yazdani, K., Young, S. K., Zhang, C., and Science and Technology Facilities Council (STFC)
Subjects: BACKGROUNDS, Photomultiplier, Physics - Instrumentation and Detectors, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Photon, Physics::Instrumentation and Detectors, Dark matter, FOS: Physical sciences, chemistry.chemical_element, Astronomy & Astrophysics, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Physics, Particles & Fields, Nuclear physics, High Energy Physics - Experiment (hep-ex), XENON, Xenon, WIMP, 0103 physical sciences, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), physics.ins-det, Physics, Scintillation, Science & Technology, hep-ex, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, Instrumentation and Detectors (physics.ins-det), chemistry, Weakly interacting massive particles, Physical Sciences, astro-ph.CO, Neutrino, Astrophysics - Instrumentation and Methods for Astrophysics, EMISSION, Astrophysics - Cosmology and Nongalactic Astrophysics, astro-ph.IM
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 twofold coincidence signal in its photomultiplier arrays, enforced in data analysis. The technique presented here exploits the double photoelectron emission effect observed in some photomultiplier models at vacuum ultraviolet wavelengths. We demonstrate this analysis using an electron recoil calibration dataset and place new constraints on the spin-independent scattering cross section of weakly interacting massive particles (WIMPs) down to 2.5 GeV / c 2 WIMP mass using the 2013 LUX dataset. This new technique is promising to enhance light WIMP and astrophysical neutrino searches in next-generation liquid xenon experiments.
Published: 2020
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261. Extending light WIMP searches to single scintillation photons in LUX

Author: Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Beltrame, P, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, de Viveiros, L, Druszkiewicz, E, Fallon, SR, Fan, A, Fiorucci, S, Gaitskell, RJ, Genovesi, J, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Paredes, B López, Manalaysay, A, Mannino, RL, Marangou, N, Marzioni, MF, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, St. J. Murphy, A, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tripathi, M, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, and Woodward, D
Subjects: Quantum Physics, Particle and Plasma Physics, Physics::Instrumentation and Detectors, hep-ex, Astrophysics::Instrumentation and Methods for Astrophysics, astro-ph.CO, Molecular, Nuclear, Atomic, Nuclear & Particles Physics, physics.ins-det, Astronomical and Space Sciences, astro-ph.IM
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 twofold coincidence signal in its photomultiplier arrays, enforced in data analysis. The technique presented here exploits the double photoelectron emission effect observed in some photomultiplier models at vacuum ultraviolet wavelengths. We demonstrate this analysis using an electron recoil calibration dataset and place new constraints on the spin-independent scattering cross section of weakly interacting massive particles (WIMPs) down to 2.5 GeV/c2 WIMP mass using the 2013 LUX dataset. This new technique is promising to enhance light WIMP and astrophysical neutrino searches in next-generation liquid xenon experiments.
Published: 2020

262. Improved modeling of β electronic recoils in liquid xenon using LUX calibration data

Author: The LUX Collaboration, Akerib, D. S., Alsum, S., Araújo, H. M., Bai, X., Balajthy, J., Baxter, A., Bernard, E. P., Bernstein, A., Biesiadzinski, T. P., Boulton, E. M., Boxer, B., Brás, P., Burdin, S., Byram, D., Carmona-Benitez, M. C., Chan, C., Cutter, J. E., de Viveiros, L., Druszkiewicz, E., Fan, A., Fiorucci, S., Gaitskell, R. J., Ghag, C., Gilchriese, M. G. D., Gwilliam, C., Hall, C. R., Haselschwardt, S. J., Hertel, S. A., Hogan, D. P., Horn, M., Huang, D. Q., Ignarra, C. M., Jacobsen, R. G., Jahangir, O., Ji, W., Kamdin, K., Kazkaz, K., Khaitan, D., Korolkova, E. V., Kravits, S., Kudryavtsev, V. A., Leason, E., Lenardo, B. G., Lesko, K. T., Liao, J., Lin, J., Lindote, A., Lopes, M. I., Manalaysay, A., Mannino, R. L., Marangou, N., Marzioni, M. F., McKinsey, D. N., Mei, D. M., Moongweluwan, M., Morad, J. A., Murphy, A. St. J., Naylor, A., Nehrkorn, C., Nelson, H. N., Neves, F., Nilima, A., Oliver-Mallory, K. C., Palladino, K. J., Pease, E. K., Riffard, Q., Rischbieter, G. R. C., Rhyne, C., Rossiter, P., Shaw, S., Shutt, T. A., Silva, C., Solmaz, M., Solovov, V. N., Sorensen, P., Sumner, T. J., Szydagis, M., Taylor, D. J., Taylor, R., Taylor, W. C., Tennyson, B. P., Terman, P. A., Tiedt, D. R., To, W. H., Tripathi, M., Tvrznikova, L., Utku, U., Uvarov, S., Vacheret, A., Velan, V., Webb, R. C., White, J. T., Whitis, T. J., Witherell, M. S., Wolfs, F. L. H., Woodward, D., Xu, J., and Zhang, C.
Subjects: Physics - Instrumentation and Detectors, interaction of hadrons, Physics::Instrumentation and Detectors, with matter, Monte Carlo method, Dark matter, Extrapolation, Detector modelling and simulations I (interaction of radiation with matter, Noble liquid detectors, chemistry.chemical_element, Time projection Chambers, 01 natural sciences, High Energy Physics - Experiment, Recoil, Xenon, Engineering, 0103 physical sciences, Calibration, 010306 general physics, Dark Matter detectors, Instrumentation, physics.ins-det, Mathematical Physics, etc), Physics, Scintillation, 010308 nuclear & particles physics, hep-ex, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, interaction of photons with matter, Nuclear & Particles Physics, Computational physics, chemistry, Physical Sciences
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 $\beta$ decays of ${}^3$H and ${}^{14}$C in the Large Underground Xenon (LUX) detector were used to tune the model, in addition to external data sets that allow for extrapolation beyond the LUX data-taking conditions. This paper also presents techniques used for modeling complicated temporal and spatial detector pathologies that can adversely affect data using a simplified model framework. The methods outlined in this report show an example of the robust applications possible with NEST v2.0, while also providing the final electronic recoil model and detector parameters that will used in the new analysis package, the LUX Legacy Analysis Monte Carlo Application (LLAMA), for accurate reproduction of the LUX data. As accurate background reproduction is crucial for the success of rare-event searches, such as dark matter direct detection experiments, the techniques outlined here can be used in other single-phase and dual-phase xenon detectors to assist with accurate ER background reproduction., Comment: 17 Pages, 10 Figures, 2 Tables
Published: 2020
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263. First direct detection constraint on mirror dark matter kinetic mixing using LUX 2013 data

Author: Collaboration, LUX, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, Viveiros, LD, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, Marzioni, MF, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, O'Sullivan, K, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tripathi, M, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, and Zhang, C
Subjects: Large Underground Xenon experiment, Dark matter, chemistry.chemical_element, FOS: Physical sciences, Electron, Astronomy & Astrophysics, Kinetic energy, Atomic, 01 natural sciences, High Energy Physics - Experiment, Physics, Particles & Fields, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, Recoil, Xenon, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, Nuclear, 010306 general physics, Physics, Quantum Physics, Science & Technology, 010308 nuclear & particles physics, hep-ex, Molecular, hep-ph, Nuclear & Particles Physics, High Energy Physics - Phenomenology, chemistry, 13. Climate action, Physical Sciences, Electron temperature, Atomic physics, Electron scattering, Astronomical and Space Sciences
Abstract: Author(s): Akerib, DS; Alsum, S; Araujo, HM; Bai, X; Balajthy, J; Baxter, A; Bernard, EP; Bernstein, A; Biesiadzinski, TP; Boulton, EM; Boxer, B; Bras, P; Burdin, S; Byram, D; Carmona-Benitez, MC; Chan, C; Cutter, JE; De Viveiros, L; Druszkiewicz, E; Fan, A; Fiorucci, S; Gaitskell, RJ; Ghag, C; Gilchriese, MGD; Gwilliam, C; Hall, CR; Haselschwardt, SJ; Hertel, SA; Hogan, DP; Horn, M; Huang, DQ; Ignarra, CM; Jacobsen, RG; Jahangir, O; Ji, W; Kamdin, K; Kazkaz, K; Khaitan, D; Korolkova, EV; Kravitz, S; Kudryavtsev, VA; Leason, E; Lenardo, BG; Lesko, KT; Liao, J; Lin, J; Lindote, A; Lopes, MI; Manalaysay, A; Mannino, RL; Marangou, N; Marzioni, MF; McKinsey, DN; Mei, DM; Moongweluwan, M; Morad, JA; Murphy, ASJ; Naylor, A; Nehrkorn, C; Nelson, HN; Neves, F; Nilima, A; Oliver-Mallory, KC; Palladino, KJ; Pease, EK; Riffard, Q; Rischbieter, GRC; Rhyne, C; Rossiter, P; Shaw, S; Shutt, TA; Silva, C; Solmaz, M; Solovov, VN; Sorensen, P; Sumner, TJ; Szydagis, M; Taylor, DJ; Taylor, R; Taylor, WC; Tennyson, BP; Terman, PA; Tiedt, DR; To, WH; Tripathi, M | 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×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 diurnal modulation of the dark matter flux and atomic shell effects in xenon are also accounted for. Having found no evidence for an electron recoil signal induced by mirror dark matter interactions we place an upper limit on the kinetic mixing parameter over a range of local mirror electron temperatures between 0.1 and 0.9 keV. This limit shows significant improvement over the previous experimental constraint from orthopositronium decays and significantly reduces the allowed parameter space for the model. We exclude mirror electron temperatures above 0.3 keV at a 90% confidence level, for this model, and constrain the kinetic mixing below this temperature.
Published: 2020
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264. Simulations of Events for the LUX-ZEPLIN (LZ) Dark Matter Experiment

Author: T. Fruth, D. Seymour, J. Lin, W. Ji, J. McLaughlin, J. Palmer, L. Tvrznikova, M. Tan, P. R. Scovell, J. Genovesi, Ethan Bernard, E. H. Miller, F. L. H. Wolfs, G. Rutherford, V. Bugaev, J. Kras, D. Woodward, B. Lopez Paredes, M. Solmaz, E. Morrison, A. Biekert, I. Stancu, A. Lindote, K. E. Boast, A. Fan, Kareem Kazkaz, Juhyeong Lee, I. Olcina, A. Bhatti, A. Alqahtani, M. G. D. Gilchriese, S. Balashov, D. Santone, C. Carels, A. Piepke, Ross G. White, A. Cottle, M. E. Monzani, F.-T. Liao, T. P. Biesiadzinski, C. Loniewski, J. Y.K. Hor, J. E. Cutter, J. Reichenbacher, M. G. D. van der Grinten, N. I. Chott, P. Zarzhitsky, Matthew Szydagis, C. Levy, Sergey Burdin, K. J. Palladino, P. Rossiter, Elena Korolkova, Laura Manenti, G. R. C. Rischbieter, A. Baxter, D. R. Tiedt, C. E. Dahl, B. Boxer, T. K. Edberg, S. A. Hertel, Q. Riffard, U. Utku, K. C. Oliver-Mallory, R. W. Schnee, S. Pal, G. Pereira, Richard J. Smith, Michele Cascella, David Leonard, E. Druszkiewicz, D. S. Akerib, Mani Tripathi, A. Nilima, Simon Fayer, M. Timalsina, E. K. Pease, D. Temples, K. Pushkin, N. Angelides, P. Majewski, M. C. Carmona-Benitez, T. J. Anderson, N. Marangou, J. Busenitz, W. H. Lippincott, Michael Schubnell, A. B.M.R. Sazzad, C. Rhyne, J. E. Armstrong, V. N. Solovov, A. Manalaysay, A. Khazov, J.J. Silk, A. St. J. Murphy, Adam Bernstein, A. Naylor, D. Naim, S. Shaw, J. Li, S. Luitz, S. Gokhale, A. Cole, R. J. Gaitskell, J. H. Buckley, L. Korley, N. Parveen, K. Kamdin, R. Linehan, Minfang Yeh, W. C. Taylor, D. Q. Huang, B. J. Mount, T. A. Shutt, Catarina Silva, Carl W. Akerlof, Jilei Xu, C. Nehrkorn, H. J. Birch, J. Balajthy, M.I. Lopes, O. Jahangir, A. Monte, Daniel McKinsey, A. C. Kaboth, J. E. Y. Dobson, X. Xiang, A. Richards, C. Ghag, V. A. Kudryavtsev, C. Chan, A. Vaitkus, S. Kravitz, D. Khaitan, J. J. Wang, C. M. Ignarra, P. A. Terman, D. Bauer, M. F. Marzioni, A. Tomás, L. Kreczko, J. R. Watson, A. Harrison, R. L. Mannino, Antonin Vacheret, S. J. Haselschwardt, M. Arthurs, F. Neves, W. Wang, E. D. Fraser, P. Sorensen, E. Leason, T. J. Sumner, P. Brás, Henning Flaecher, Benjamin Krikler, K. T. Lesko, Yue Meng, T. J. Whitis, X. Bai, E. Mizrachi, J. Johnson, S. R. Eriksen, Duncan Carlsmith, Wolfgang Lorenzon, X. Liu, N. Swanson, J. R. Bensinger, Eli Gibson, A. Kamaha, H. N. Nelson, W. Turner, C. Nedlik, Henrique Araujo, C. R. Hall, R. Cabrita, H. Kraus, R. Liu, Richard Rosero, D. R. Tronstad, R. C. Webb, L. de Viveiros, K. Stifter, S. Fiorucci, J. Liao, J. A. Morad, J. Bang, J. A. Nikoleyczik, M. Horn, C. D. Kocher, J. M. Lyle, Robert A. Taylor, S. Alsum, I. Khurana, A. Stevens, and Bjoern Penning
Subjects: Physics, Particle physics, Physics - Instrumentation and Detectors, hep-ex, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Monte Carlo method, Detector, Dark matter, FOS: Physical sciences, Astronomy and Astrophysics, Instrumentation and Detectors (physics.ins-det), 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), WIMP, 0103 physical sciences, Sensitivity (control systems), Projection (set theory), physics.ins-det, 010303 astronomy & astrophysics, Event (particle physics), Background radiation
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 particular note are the event generators, which allow us to model the background radiation, and the detector response physics used in the production of raw signals, which can be converted into digitized waveforms similar to data from the operational detector. Inclusion of the detector response allows us to process simulated data using the same analysis routines as developed to process the experimental data., Comment: 24 pages, 19 figures; Corresponding Authors: A. Cottle, V. Kudryavtsev, D. Woodward
Published: 2020
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265. Ensino de Matemática para surdos: mapeamento de pesquisas sobre resolução de problemas

Author: Zulma Elizabete de Freitas Madruga, Salvador Cardoso Silva Muniz, Jurema Lindote Botelho Peixoto, and Fabrício Andrade Pinheiro
Subjects: SciELO, Preparación de clases, Educational research, Teórica, Mathematics education, Alumnos discapacitados, Resolución y estrategias, Análisis y reflexión sobre la enseñanza, Inclusion (education)
Abstract: Este artigo tem como objetivo analisar pesquisas acadêmicas que tratam da inclusão de estudantes surdos e enfocam a resolução de problemas. Para tanto foi utilizado o mapeamento na pesquisa educacional como procedimento metodológico. Foram realizadas buscas em revistas de Qualis A1 a B2, portal de teses e dissertações da CAPES, Google Acadêmico e Scielo, utilizando-se para tanto as palavras-chave ‘inclusão de surdo’, ‘inclusão e resolução de problemas’ e ‘situações problemas’. Após filtragem dos resultados, foram encontrados seis artigos que fizeram parte do corpus de análise. Os resultados mostraram que a inclusão não está ocorrendo de forma efetiva, pois o professor ainda não está preparado para atender alunos surdos e, consequentemente, ensinar Matemática para esses estudantes. Destaca-se também o número reduzido de pesquisas que tratam sobre a inclusão de surdos tendo a resolução de problemas como foco. Palavras-chave: Ensino de Matemática. Inclusão de surdos. Resolução de problemas.
Published: 2020

266. Desenho universal para aprendizagem: reflexões sobre o desenvolvimento de aulas de Matemática

Author: Frank Presley de Lima Neves and Jurema Lindote Botelho Peixoto
Subjects: General Medicine, lcsh:L, lcsh:Education
Abstract: O contexto educacional inclusivo tensiona um currículo prescritivo, de formato único, pois não tem contemplado diferenças na aprendizagem dos estudantes. Nesse sentido, é importante encontrar alternativas para a experimentação de propostas que se distanciem dessa concepção. Esse estudo teve a finalidade de analisar o desenvolvimento de aulas de matemática na abordagem curricular do Desenho Universal para a Aprendizagem (DUA) e suas implicações para a prática reflexiva do professor. Para tanto, foi desenvolvida uma pesquisa-ação no contexto de uma formação continuada, durante os horários de atividades complementares. A formação enfocou a Educação Inclusiva, a abordagem curricular do DUA, o planejamento e desenvolvimento de aulas de Matemática. Participaram da pesquisa três professores que ensinam Matemática em uma escola pública do sul da Bahia, que possuíam estudantes com deficiência em sua turma. Os dados foram produzidos no processo formativo, a partir da observação participante, registros no diário de campo e relatos escritos dos professores. Os resultados sugerem que o planejamento e o desenvolvimento de aulas baseado no DUA contribuíram para que esses profissionais repensassem sua ação docente de maneira reflexiva e buscassem estratégias de promoção para um ensino de Matemática para todos. Palavras-chave: Desenho Universal para a Aprendizagem. Currículo. Ensino de Matemática.
Published: 2020

267. Status and outlook of the neutron time-of-flight facility n_TOF at CERN

Author: Gunsing, F., Abbondanno, U., Aerts, G., Álvarez, H., Álvarez-Velarde, F., Andriamonje, S., Andrzejewski, J., Assimakopoulos, P., Audouin, L., Badurek, G., Baumann, P., Bečvář, F., Berthoumieux, E., Calviño, F., Cano-Ott, D., Capote, R., de Albornoz, A. Carrillo, Cennini, P., Chepel, V., Chiaveri, E., Colonna, N., Cortes, G., Couture, A., Cox, J., Dahlfors, M., David, S., Dillman, I., Dolfini, R., Domingo-Pardo, C., Dridi, W., Duran, I., Eleftheriadis, C., Ferrant, L., Ferrari, A., Ferreira-Marques, R., Frais-Koelbl, H., Fujii, K., Furman, W., Goncalves, I., González-Romero, E., Goverdovski, A., Gramegna, F., Griesmayer, E., Guerrero, C., Haas, B., Haight, R., Heil, M., Herrera-Martinez, A., Igashira, M., Isaev, S., Jericha, E., Käppeler, F., Kadi, Y., Karadimos, D., Karamanis, D., Kerveno, M., Ketlerov, V., Koehler, P., Konovalov, V., Kossionides, E., Krtička, M., Lampoudis, C., Leeb, H., Lindote, A., Lopes, I., Lozano, M., Lukic, S., Marganiec, J., Marques, L., Marrone, S., Martínez, T., Massimi, C., Mastinu, P., Mengoni, A., Milazzo, P.M., Moreau, C., Mosconi, M., Neves, F., Oberhummer, H., O’Brien, S., Oshima, M., Pancin, J., Papachristodoulou, C., Papadopoulos, C., Paradela, C., Patronis, N., Pavlik, A., Pavlopoulos, P., Perrot, L., Pigni, M.T., Plag, R., Plompen, A., Plukis, A., Poch, A., Pretel, C., Quesada, J., Rauscher, T., Reifarth, R., Rosetti, M., Rubbia, C., Rudolf, G., Rullhusen, P., Salgado, J., Sarchiapone, L., Savvidis, I., Stephan, C., Tagliente, G., Tain, J.L., Tassan-Got, L., Tavora, L., Terlizzi, R., Vannini, G., Vaz, P., Ventura, A., Villamarin, D., Vincente, M.C., Vlachoudis, V., Vlastou, R., Voss, F., Walter, S., Wendler, H., Wiescher, M., and Wisshak, K.
Published: 2007
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268. First direct detection constraint on mirror dark matter kinetic mixing using LUX 2013 data

Author: Akerib, DS, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, De Viveiros, L, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, Marzioni, MF, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tripathi, M, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, Zhang, C, Akerib, DS, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, De Viveiros, L, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, Marzioni, MF, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tripathi, M, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, and Zhang, C
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×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 diurnal modulation of the dark matter flux and atomic shell effects in xenon are also accounted for. Having found no evidence for an electron recoil signal induced by mirror dark matter interactions we place an upper limit on the kinetic mixing parameter over a range of local mirror electron temperatures between 0.1 and 0.9 keV. This limit shows significant improvement over the previous experimental constraint from orthopositronium decays and significantly reduces the allowed parameter space for the model. We exclude mirror electron temperatures above 0.3 keV at a 90% confidence level, for this model, and constrain the kinetic mixing below this temperature.
Published: 2020

269. Investigation of background electron emission in the LUX detector

Author: Akerib, DS, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, De Viveiros, L, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, Zhang, C, Akerib, DS, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, De Viveiros, L, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, and Zhang, C
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 dark matter experiment. We characterize different electron populations based on their emission intensities and their correlations with preceding energy depositions in the detector. By studying the background under different experimental conditions, we identified the leading emission mechanisms, including photoionization and the photoelectric effect induced by the xenon luminescence, delayed emission of electrons trapped under the liquid surface, capture and release of drifting electrons by impurities, and grid electron emission. We discuss how these backgrounds can be mitigated in LUX and future xenon-based dark matter experiments.
Published: 2020

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

Author: Akerib, DS, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, De Viveiros, L, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, Zhang, C, Akerib, DS, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, De Viveiros, L, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, and Zhang, C
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 2014-2016 runs of the Large Underground Xenon 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 nuclear recoil energy of ∼100 keV, we observe an electronic recoil background acceptance of <10-5 at a nuclear recoil signal acceptance of 50%. We also observe modest electric field dependence of the discrimination power, which peaks at a field of around 300 V/cm over the range of fields explored in this study (50-500 V/cm). In the weakly interacting massive particle search region of S1=1-80 phd, the minimum electronic recoil leakage we observe is (7.3±0.6)×10-4, which is obtained for a drift field of 240-290 V/cm. Pulse shape discrimination is utilized to improve our results, and we find that, at low energies and low fields, there is an additional reduction in background leakage by a factor of up to 3. We develop an empirical model for recombination fluctuations which, when used alongside the Noble Element Scintillation Technique simulation package, correctly reproduces the skewness of the electronic recoil data. We use this updated simulation to study the width of the electronic recoil band, finding that its dominant contribution comes from electron-ion recombination fluctuations, followed in magnitude of contribution by fluctuations in the S1 signal, fluctuations in the S2 signal, and fluctuations in the total number of quanta produced for a given energy deposition.
Published: 2020

271. Search for two neutrino double electron capture of 124Xe and 126Xe in the full exposure of the LUX detector

Author: Akerib, DS, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, De Viveiros, L, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, Marzioni, MF, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tripathi, M, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, Zhang, C, Akerib, DS, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, De Viveiros, L, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, Marzioni, MF, McKinsey, DN, Mei, DM, Moongweluwan, M, Morad, JA, Murphy, ASJ, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Pease, EK, Riffard, Q, Rischbieter, GRC, Rhyne, C, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tripathi, M, Tvrznikova, L, Utku, U, Uvarov, S, Vacheret, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xu, J, and Zhang, C
Abstract: Two-neutrino double electron capture is a process allowed in the standard model of particle physics. This rare decay has been observed in 78Kr, 130Ba and more recently in 124Xe. In this publication we report on the search for this process in 124Xe and 126Xe using the full exposure of the large underground xenon (LUX) experiment, in a total of 27769.5 kg-days. No evidence of a signal was observed, allowing us to set 90% C.L. lower limits for the half-lives of these decays of 2.0 × 1021 years for 124Xe and 1.9 × 1021 years for 126Xe.
Published: 2020

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

Author: Collaboration, LUX, Collaboration, LUX, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Bang, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, Viveiros, L de, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, McKinsey, DN, Mei, D-M, Morad, JA, Murphy, A St J, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Rhyne, C, Riffard, Q, Rischbieter, GRC, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Swanson, N, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tvrznikova, L, Utku, U, Vacheret, A, Vaitkus, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xiang, X, Xu, J, Zhang, C, Collaboration, LUX, Collaboration, LUX, Akerib, DS, Alsum, S, Araújo, HM, Bai, X, Balajthy, J, Bang, J, Baxter, A, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM, Boxer, B, Brás, P, Burdin, S, Byram, D, Carmona-Benitez, MC, Chan, C, Cutter, JE, Viveiros, L de, Druszkiewicz, E, Fan, A, Fiorucci, S, Gaitskell, RJ, Ghag, C, Gilchriese, MGD, Gwilliam, C, Hall, CR, Haselschwardt, SJ, Hertel, SA, Hogan, DP, Horn, M, Huang, DQ, Ignarra, CM, Jacobsen, RG, Jahangir, O, Ji, W, Kamdin, K, Kazkaz, K, Khaitan, D, Korolkova, EV, Kravitz, S, Kudryavtsev, VA, Leason, E, Lenardo, BG, Lesko, KT, Liao, J, Lin, J, Lindote, A, Lopes, MI, Manalaysay, A, Mannino, RL, Marangou, N, McKinsey, DN, Mei, D-M, Morad, JA, Murphy, A St J, Naylor, A, Nehrkorn, C, Nelson, HN, Neves, F, Nilima, A, Oliver-Mallory, KC, Palladino, KJ, Rhyne, C, Riffard, Q, Rischbieter, GRC, Rossiter, P, Shaw, S, Shutt, TA, Silva, C, Solmaz, M, Solovov, VN, Sorensen, P, Sumner, TJ, Swanson, N, Szydagis, M, Taylor, DJ, Taylor, R, Taylor, WC, Tennyson, BP, Terman, PA, Tiedt, DR, To, WH, Tvrznikova, L, Utku, U, Vacheret, A, Vaitkus, A, Velan, V, Webb, RC, White, JT, Whitis, TJ, Witherell, MS, Wolfs, FLH, Woodward, D, Xiang, X, Xu, J, and Zhang, C
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 this regime, extra precaution is required to reject a complex set of low-energy electron backgrounds that have long been observed in this class of detector. Noticing backgrounds from the wire grid electrodes near the top and bottom of the active target are particularly pernicious, we develop a machine learning technique based on ionization pulse shape to identify and reject these events. We demonstrate the technique can improve Poisson limits on low-mass DM interactions by a factor of $2$-$7$ with improvement depending heavily on the size of ionization signals. We use the technique on events in an effective $5$ tonne$\cdot$day exposure from LUX's 2013 science operation to place strong limits on low-mass DM particles with masses in the range $m_{\chi}\in0.15$-$10$ GeV. This machine learning technique is expected to be useful for near-future experiments, such as LZ and XENONnT, which hope to perform low-mass DM searches with the stringent background control necessary to make a discovery.
Published: 2020

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

Author: Akerib, D. S., Alsum, S., Araújo, H. M., Bai, X., Balajthy, J., Baxter, A., Bernard, E. P., Bernstein, A., Biesiadzinski, T. P., Boulton, E. M., Boxer, B., Brás, P., Burdin, S., Byram, D., Carmona-Benitez, M. C., Chan, C., Cutter, J. E., de Viveiros, L., Druszkiewicz, E., Fan, A., Fiorucci, S., Gaitskell, R. J., Ghag, C., Gilchriese, M. G. D., Gwilliam, C., Hall, C. R., Haselschwardt, S. J., Hertel, S. A., Hogan, D. P., Horn, M., Huang, D. Q., Ignarra, C. M., Jacobsen, R. G., Jahangir, O., Ji, W., Kamdin, K., Kazkaz, K., Khaitan, D., Korolkova, E. V., Kravitz, S., Kudryavtsev, V. A., Larsen, N. A., Leason, E., Lenardo, B. G., Lesko, K. T., Liao, J., Lin, J., Lindote, A., Lopes, M. I., Manalaysay, A., Mannino, R. L., Marangou, N., McKinsey, D. N., Mei, D. -M., Moongweluwan, M., Morad, J. A., Murphy, A. St. J., Naylor, A., Nehrkorn, C., Nelson, H. N., Neves, F., Nilima, A., Oliver-Mallory, K. C., Palladino, K. J., Pease, E. K., Riffard, Q., Rischbieter, G. R. C., Rhyne, C., Rossiter, P., Shaw, S., Shutt, T. A., Silva, C., Solmaz, M., Solovov, V. N., Sorensen, P., Sumner, T. J., Szydagis, M., Taylor, D. J., Taylor, R., Taylor, W. C., Tennyson, B. P., Terman, P. A., Tiedt, D. R., To, W. H., Tvrznikova, L., Utku, U., Uvarov, S., Vacheret, A., Velan, V., Webb, R. C., White, J. T., Whitis, T. J., Witherell, M. S., Wolfs, F. L. H., Woodward, D., Xu, J., Zhang, C., Akerib, D. S., Alsum, S., Araújo, H. M., Bai, X., Balajthy, J., Baxter, A., Bernard, E. P., Bernstein, A., Biesiadzinski, T. P., Boulton, E. M., Boxer, B., Brás, P., Burdin, S., Byram, D., Carmona-Benitez, M. C., Chan, C., Cutter, J. E., de Viveiros, L., Druszkiewicz, E., Fan, A., Fiorucci, S., Gaitskell, R. J., Ghag, C., Gilchriese, M. G. D., Gwilliam, C., Hall, C. R., Haselschwardt, S. J., Hertel, S. A., Hogan, D. P., Horn, M., Huang, D. Q., Ignarra, C. M., Jacobsen, R. G., Jahangir, O., Ji, W., Kamdin, K., Kazkaz, K., Khaitan, D., Korolkova, E. V., Kravitz, S., Kudryavtsev, V. A., Larsen, N. A., Leason, E., Lenardo, B. G., Lesko, K. T., Liao, J., Lin, J., Lindote, A., Lopes, M. I., Manalaysay, A., Mannino, R. L., Marangou, N., McKinsey, D. N., Mei, D. -M., Moongweluwan, M., Morad, J. A., Murphy, A. St. J., Naylor, A., Nehrkorn, C., Nelson, H. N., Neves, F., Nilima, A., Oliver-Mallory, K. C., Palladino, K. J., Pease, E. K., Riffard, Q., Rischbieter, G. R. C., Rhyne, C., Rossiter, P., Shaw, S., Shutt, T. A., Silva, C., Solmaz, M., Solovov, V. N., Sorensen, P., Sumner, T. J., Szydagis, M., Taylor, D. J., Taylor, R., Taylor, W. C., Tennyson, B. P., Terman, P. A., Tiedt, D. R., To, W. H., Tvrznikova, L., Utku, U., Uvarov, S., Vacheret, A., Velan, V., Webb, R. C., White, J. T., Whitis, T. J., Witherell, M. S., Wolfs, F. L. H., Woodward, D., Xu, J., and Zhang, C.
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 science run. Tension between experiments and the absence of a definitive positive detection suggest it would be prudent to search for WIMPs outside the standard spin-independent/spin-dependent paradigm. Recent theoretical work has identified a complete basis of 14 independent effective field theory (EFT) operators to describe WIMP-nucleon interactions. In addition to spin-independent and spin-dependent nuclear responses, these operators can produce novel responses such as angular-momentum-dependent and spin-orbit couplings. Here we report on a search for all 14 of these EFT couplings with data from LUX's first science run. Limits are placed on each coupling as a function of WIMP mass., Comment: 11 pages, 6 figures
Published: 2020
Full Text: View/download PDF

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

Author: LUX Collaboration, Akerib, D. S., Alsum, S., Araújo, H. M., Bai, X., Balajthy, J., Bang, J., Baxter, A., Bernard, E. P., Bernstein, A., Biesiadzinski, T. P., Boulton, E. M., Boxer, B., Brás, P., Burdin, S., Byram, D., Carmona-Benitez, M. C., Chan, C., Cutter, J. E., de Viveiros, L., Druszkiewicz, E., Fan, A., Fiorucci, S., Gaitskell, R. J., Ghag, C., Gilchriese, M. G. D., Gwilliam, C., Hall, C. R., Haselschwardt, S. J., Hertel, S. A., Hogan, D. P., Horn, M., Huang, D. Q., Ignarra, C. M., Jacobsen, R. G., Jahangir, O., Ji, W., Kamdin, K., Kazkaz, K., Khaitan, D., Korolkova, E. V., Kravitz, S., Kudryavtsev, V. A., Leason, E., Lenardo, B. G., Lesko, K. T., Liao, J., Lin, J., Lindote, A., Lopes, M. I., Manalaysay, A., Mannino, R. L., Marangou, N., McKinsey, D. N., Mei, D. -M., Morad, J. A., Murphy, A. St. J., Naylor, A., Nehrkorn, C., Nelson, H. N., Neves, F., Nilima, A., Oliver-Mallory, K. C., Palladino, K. J., Rhyne, C., Riffard, Q., Rischbieter, G. R. C., Rossiter, P., Shaw, S., Shutt, T. A., Silva, C., Solmaz, M., Solovov, V. N., Sorensen, P., Sumner, T. J., Swanson, N., Szydagis, M., Taylor, D. J., Taylor, R., Taylor, W. C., Tennyson, B. P., Terman, P. A., Tiedt, D. R., To, W. H., Tvrznikova, L., Utku, U., Vacheret, A., Vaitkus, A., Velan, V., Webb, R. C., White, J. T., Whitis, T. J., Witherell, M. S., Wolfs, F. L. H., Woodward, D., Xiang, X., Xu, J., Zhang, C., LUX Collaboration, Akerib, D. S., Alsum, S., Araújo, H. M., Bai, X., Balajthy, J., Bang, J., Baxter, A., Bernard, E. P., Bernstein, A., Biesiadzinski, T. P., Boulton, E. M., Boxer, B., Brás, P., Burdin, S., Byram, D., Carmona-Benitez, M. C., Chan, C., Cutter, J. E., de Viveiros, L., Druszkiewicz, E., Fan, A., Fiorucci, S., Gaitskell, R. J., Ghag, C., Gilchriese, M. G. D., Gwilliam, C., Hall, C. R., Haselschwardt, S. J., Hertel, S. A., Hogan, D. P., Horn, M., Huang, D. Q., Ignarra, C. M., Jacobsen, R. G., Jahangir, O., Ji, W., Kamdin, K., Kazkaz, K., Khaitan, D., Korolkova, E. V., Kravitz, S., Kudryavtsev, V. A., Leason, E., Lenardo, B. G., Lesko, K. T., Liao, J., Lin, J., Lindote, A., Lopes, M. I., Manalaysay, A., Mannino, R. L., Marangou, N., McKinsey, D. N., Mei, D. -M., Morad, J. A., Murphy, A. St. J., Naylor, A., Nehrkorn, C., Nelson, H. N., Neves, F., Nilima, A., Oliver-Mallory, K. C., Palladino, K. J., Rhyne, C., Riffard, Q., Rischbieter, G. R. C., Rossiter, P., Shaw, S., Shutt, T. A., Silva, C., Solmaz, M., Solovov, V. N., Sorensen, P., Sumner, T. J., Swanson, N., Szydagis, M., Taylor, D. J., Taylor, R., Taylor, W. C., Tennyson, B. P., Terman, P. A., Tiedt, D. R., To, W. H., Tvrznikova, L., Utku, U., Vacheret, A., Vaitkus, A., Velan, V., Webb, R. C., White, J. T., Whitis, T. J., Witherell, M. S., Wolfs, F. L. H., Woodward, D., Xiang, X., Xu, J., and Zhang, C.
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 this regime, extra precaution is required to reject a complex set of low-energy electron backgrounds that have long been observed in this class of detector. Noticing backgrounds from the wire grid electrodes near the top and bottom of the active target are particularly pernicious, we develop a machine learning technique based on ionization pulse shape to identify and reject these events. We demonstrate the technique can improve Poisson limits on low-mass DM interactions by a factor of $2$-$7$ with improvement depending heavily on the size of ionization signals. We use the technique on events in an effective $5$ tonne$\cdot$day exposure from LUX's 2013 science operation to place strong limits on low-mass DM particles with masses in the range $m_{\chi}\in0.15$-$10$ GeV. This machine learning technique is expected to be useful for near-future experiments, such as LZ and XENONnT, which hope to perform low-mass DM searches with the stringent background control necessary to make a discovery., Comment: 14 pages, 13 figures
Published: 2020
Full Text: View/download PDF

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

Author: Akerib, D. S., Akerlof, C. W., Akimov, D. Yu., Alquahtani, A., Alsum, S. K., Anderson, T. J., Angelides, N., Araújo, H. M., Arbuckle, A., Armstrong, J. E., Arthurs, M., Auyeung, H., Aviles, S., Bai, X., Bailey, A. J., Balajthy, J., Balashov, S., Bang, J., Barry, M. J., Bauer, D., Bauer, P., Baxter, A., Belle, J., Beltrame, P., Bensinger, J., Benson, T., Bernard, E. P., Bernstein, A., Bhatti, A., Biekert, A., Biesiadzinski, T. P., Birch, H. J., Birrittella, B., Boast, K. E., Bolozdynya, A. I., Boulton, E. M., Boxer, B., Bramante, R., Branson, S., Brás, P., Breidenbach, M., Brew, C. A. J., Buckley, J. H., Bugaev, V. V., Bunker, R., Burdin, S., Busenitz, J. K., Cabrita, R., Campbell, J. S., Carels, C., Carlsmith, D. L., Carlson, B., Carmona-Benitez, M. C., Cascella, M., Chan, C., Cherwinka, J. J., Chiller, A. A., Chiller, C., Chott, N. I., Cole, A., Coleman, J., Colling, D., Conley, R. A., Cottle, A., Coughlen, R., Cox, G., Craddock, W. W., Curran, D., Currie, A., Cutter, J. E., da Cunhaw, J. P., Dahl, C. E., Dardin, S., Dasu, S., Davis, J., Davison, T. J. R., de Viveiros, L., Decheine, N., Dobi, A., Dobson, J. E. Y., Druszkiewicz, E., Dushkin, A., Edberg, T. K., Edwards, W. R., Edwards, B. N., Edwards, J., Elnimr, M. M., Emmet, W. T., Eriksen, S. R., Faham, C. H., Fan, A., Fayer, S., Fiorucci, S., Flaecher, H., Florang, I. M. Fogarty, Ford, P., Francis, V. B., Fraser, E. D., Froborg, F., Fruth, T., Gaitskell, R. J., Gantos, N. J., Garcia, D., Gehman, V. M., Gelfand, R., Genovesi, J., Gerhard, R. M., Ghag, C., Gibson, E., Gilchriese, M. G. D., Gokhale, S., Gomber, B., Gonda, T. G., Greenall, A., Greenwood, S., Gregerson, G., van der Grinten, M. G. D., Gwilliam, C. B., Hall, C. R., Hamilton, D., Hans, S., Hanzel, K., Harrington, T., Harrison, A., Harrison, J., Hasselkus, C., Haselschwardt, S. J., Hemer, D., Hertel, S. A., Heise, J., Hillbrand, S., Hitchcock, O., Hjemfelt, C., Hoff, M. D., Holbrook, B., Holtom, E., Hor, J. Y-K., Horn, M., Huang, D. Q., Hurteau, T. W., Ignarra, C. M., Irving, M. N., Jacobsen, R. G., Jahangir, O., Jeffery, S. N., Ji, W., Johnson, M., Johnson, J., Johnson, P., Jones, W. G., Kaboth, A. C., Kamaha, A., Kamdin, K., Kasey, V., Kazkaz, K., Keefner, J., Khaitan, D., Khaleeq, M., Khazov, A., Khromov, A. V., Khurana, I., Kim, Y. D., Kim, W. T., Kocher, C. D., Kodroff, D., Konovalov, A. M., Korley, L., Korolkova, E. V., Koyuncu, M., Kras, J., Kraus, H., Kravitz, S. W., Krebs, H. J., Kreczko, L., Krikler, B., Kudryavtsev, V. A., Kumpan, A. V., Kyre, S., Lambert, A. R., Landerud, B., Larsen, N. A., Laundrie, A., Leason, E. A., Lee, H. S., Lee, J., Lee, C., Lenardo, B. G., Leonard, D. S., Leonard, R., Lesko, K. T., Levy, C., Li, J., Liu, Y., Liao, J., Liao, F. -T., Lin, J., Lindote, A., Linehan, R., Lippincott, W. H., Liu, R., Liu, X., Loniewski, C., Lopes, M. I., Lopez-Asamar, E., Paredes, B. López, Lorenzon, W., Lucero, D., Luitz, S., Lyle, J. M., Lynch, C., Majewski, P. A., Makkinje, J., Malling, D. C., Manalaysay, A., Manenti, L., Mannino, R. L., Marangou, N., Markley, D. J., MarrLaundrie, P., Martin, T. J., Marzioni, M. F., Maupin, C., McConnell, C. T., McKinsey, D. N., McLaughlin, J., Mei, D. -M., Meng, Y., Miller, E. H., Minaker, Z. J., Mizrachi, E., Mock, J., Molash, D., Monte, A., Monzani, M. E., Morad, J. A., Morrison, E., Mount, B. J., Murphy, A. St. J., Naim, D., Naylor, A., Nedlik, C., Nehrkorn, C., Nelson, H. N., Nesbit, J., Neves, F., Nikkel, J. A., Nikoleyczik, J. A., Nilima, A., O'Dell, J., Oh, H., O'Neill, F. G., O'Sullivan, K., Olcina, I., Olevitch, M. A., Oliver-Mallory, K. C., Oxborough, L., Pagac, A., Pagenkopf, D., Pal, S., Palladino, K. J., Palmaccio, V. M., Palmer, J., Pangilinan, M., Parveen, N., Patton, S. J., Pease, E. K., Penning, B. P., Pereira, G., Pereira, C., Peterson, I. B., Piepke, A., Pierson, S., Powell, S., Preece, R. M., Pushkin, K., Qie, Y., Racine, M., Ratcliff, B. N., Reichenbacher, J., Reichhart, L., Rhyne, C. A., Richards, A., Riffard, Q., Rischbieter, G. R. C., Rodrigues, J. P., Rose, H. J., Rosero, R., Rossiter, P., Rucinski, R., Rutherford, G., Saba, J. S., Sabarots, L., Santone, D., Sarychev, M., Sazzad, A. B. M. R., Schnee, R. W., Schubnell, M., Scovell, P. R., Severson, M., Seymour, D., Shaw, S., Shutt, G. W., Shutt, T. A., Silk, J. J., Silva, C., Skarpaas, K., Skulski, W., Smith, A. R., Smith, R. J., Smith, R. E., So, J., Solmaz, M., Solovov, V. N., Sorensen, P., Sosnovtsev, V. V., Stancu, I., Stark, M. R., Stephenson, S., Stern, N., Stevens, A., Stiegler, T. M., Stifter, K., Studley, R., Sumner, T. J., Sundarnath, K., Sutcliffe, P., Swanson, N., Szydagis, M., Tan, M., Taylor, W. C., Taylor, R., Taylor, D. J., Temples, D., Tennyson, B. P., Terman, P. A., Thomas, K. J., Thomson, J. A., Tiedt, D. R., Timalsina, M., To, W. H., Tomás, A., Tope, T. E., Tripathi, M., Tronstad, D. R., Tull, C. E., Turner, W., Tvrznikova, L., Utes, M., Utku, U., Uvarov, S., Va'vra, J., Vacheret, A., Vaitkus, A., Verbus, J. R., Vietanen, T., Voirin, E., Vuosalo, C. O., Walcott, S., Waldron, W. L., Walker, K., Wang, J. J., Wang, R., Wang, L., Wang, W., Wang, Y., Watson, J. R., Migneault, J., Weatherly, S., Webb, R. C., Wei, W. -Z., While, M., White, R. G., White, J. T., White, D. T., Whitis, T. J., Wisniewski, W. J., Wilson, K., Witherell, M. S., Wolfs, F. L. H., Wolfs, J. D., Woodward, D., Worm, S. D., Xiang, X., Xiao, Q., Xu, J., Yeh, M., Yin, J., Young, I., Zhang, C., Zarzhitsky, P., Akerib, D. S., Akerlof, C. W., Akimov, D. Yu., Alquahtani, A., Alsum, S. K., Anderson, T. J., Angelides, N., Araújo, H. M., Arbuckle, A., Armstrong, J. E., Arthurs, M., Auyeung, H., Aviles, S., Bai, X., Bailey, A. J., Balajthy, J., Balashov, S., Bang, J., Barry, M. J., Bauer, D., Bauer, P., Baxter, A., Belle, J., Beltrame, P., Bensinger, J., Benson, T., Bernard, E. P., Bernstein, A., Bhatti, A., Biekert, A., Biesiadzinski, T. P., Birch, H. J., Birrittella, B., Boast, K. E., Bolozdynya, A. I., Boulton, E. M., Boxer, B., Bramante, R., Branson, S., Brás, P., Breidenbach, M., Brew, C. A. J., Buckley, J. H., Bugaev, V. V., Bunker, R., Burdin, S., Busenitz, J. K., Cabrita, R., Campbell, J. S., Carels, C., Carlsmith, D. L., Carlson, B., Carmona-Benitez, M. C., Cascella, M., Chan, C., Cherwinka, J. J., Chiller, A. A., Chiller, C., Chott, N. I., Cole, A., Coleman, J., Colling, D., Conley, R. A., Cottle, A., Coughlen, R., Cox, G., Craddock, W. W., Curran, D., Currie, A., Cutter, J. E., da Cunhaw, J. P., Dahl, C. E., Dardin, S., Dasu, S., Davis, J., Davison, T. J. R., de Viveiros, L., Decheine, N., Dobi, A., Dobson, J. E. Y., Druszkiewicz, E., Dushkin, A., Edberg, T. K., Edwards, W. R., Edwards, B. N., Edwards, J., Elnimr, M. M., Emmet, W. T., Eriksen, S. R., Faham, C. H., Fan, A., Fayer, S., Fiorucci, S., Flaecher, H., Florang, I. M. Fogarty, Ford, P., Francis, V. B., Fraser, E. D., Froborg, F., Fruth, T., Gaitskell, R. J., Gantos, N. J., Garcia, D., Gehman, V. M., Gelfand, R., Genovesi, J., Gerhard, R. M., Ghag, C., Gibson, E., Gilchriese, M. G. D., Gokhale, S., Gomber, B., Gonda, T. G., Greenall, A., Greenwood, S., Gregerson, G., van der Grinten, M. G. D., Gwilliam, C. B., Hall, C. R., Hamilton, D., Hans, S., Hanzel, K., Harrington, T., Harrison, A., Harrison, J., Hasselkus, C., Haselschwardt, S. J., Hemer, D., Hertel, S. A., Heise, J., Hillbrand, S., Hitchcock, O., Hjemfelt, C., Hoff, M. D., Holbrook, B., Holtom, E., Hor, J. Y-K., Horn, M., Huang, D. Q., Hurteau, T. W., Ignarra, C. M., Irving, M. N., Jacobsen, R. G., Jahangir, O., Jeffery, S. N., Ji, W., Johnson, M., Johnson, J., Johnson, P., Jones, W. G., Kaboth, A. C., Kamaha, A., Kamdin, K., Kasey, V., Kazkaz, K., Keefner, J., Khaitan, D., Khaleeq, M., Khazov, A., Khromov, A. V., Khurana, I., Kim, Y. D., Kim, W. T., Kocher, C. D., Kodroff, D., Konovalov, A. M., Korley, L., Korolkova, E. V., Koyuncu, M., Kras, J., Kraus, H., Kravitz, S. W., Krebs, H. J., Kreczko, L., Krikler, B., Kudryavtsev, V. A., Kumpan, A. V., Kyre, S., Lambert, A. R., Landerud, B., Larsen, N. A., Laundrie, A., Leason, E. A., Lee, H. S., Lee, J., Lee, C., Lenardo, B. G., Leonard, D. S., Leonard, R., Lesko, K. T., Levy, C., Li, J., Liu, Y., Liao, J., Liao, F. -T., Lin, J., Lindote, A., Linehan, R., Lippincott, W. H., Liu, R., Liu, X., Loniewski, C., Lopes, M. I., Lopez-Asamar, E., Paredes, B. López, Lorenzon, W., Lucero, D., Luitz, S., Lyle, J. M., Lynch, C., Majewski, P. A., Makkinje, J., Malling, D. C., Manalaysay, A., Manenti, L., Mannino, R. L., Marangou, N., Markley, D. J., MarrLaundrie, P., Martin, T. J., Marzioni, M. F., Maupin, C., McConnell, C. T., McKinsey, D. N., McLaughlin, J., Mei, D. -M., Meng, Y., Miller, E. H., Minaker, Z. J., Mizrachi, E., Mock, J., Molash, D., Monte, A., Monzani, M. E., Morad, J. A., Morrison, E., Mount, B. J., Murphy, A. St. J., Naim, D., Naylor, A., Nedlik, C., Nehrkorn, C., Nelson, H. N., Nesbit, J., Neves, F., Nikkel, J. A., Nikoleyczik, J. A., Nilima, A., O'Dell, J., Oh, H., O'Neill, F. G., O'Sullivan, K., Olcina, I., Olevitch, M. A., Oliver-Mallory, K. C., Oxborough, L., Pagac, A., Pagenkopf, D., Pal, S., Palladino, K. J., Palmaccio, V. M., Palmer, J., Pangilinan, M., Parveen, N., Patton, S. J., Pease, E. K., Penning, B. P., Pereira, G., Pereira, C., Peterson, I. B., Piepke, A., Pierson, S., Powell, S., Preece, R. M., Pushkin, K., Qie, Y., Racine, M., Ratcliff, B. N., Reichenbacher, J., Reichhart, L., Rhyne, C. A., Richards, A., Riffard, Q., Rischbieter, G. R. C., Rodrigues, J. P., Rose, H. J., Rosero, R., Rossiter, P., Rucinski, R., Rutherford, G., Saba, J. S., Sabarots, L., Santone, D., Sarychev, M., Sazzad, A. B. M. R., Schnee, R. W., Schubnell, M., Scovell, P. R., Severson, M., Seymour, D., Shaw, S., Shutt, G. W., Shutt, T. A., Silk, J. J., Silva, C., Skarpaas, K., Skulski, W., Smith, A. R., Smith, R. J., Smith, R. E., So, J., Solmaz, M., Solovov, V. N., Sorensen, P., Sosnovtsev, V. V., Stancu, I., Stark, M. R., Stephenson, S., Stern, N., Stevens, A., Stiegler, T. M., Stifter, K., Studley, R., Sumner, T. J., Sundarnath, K., Sutcliffe, P., Swanson, N., Szydagis, M., Tan, M., Taylor, W. C., Taylor, R., Taylor, D. J., Temples, D., Tennyson, B. P., Terman, P. A., Thomas, K. J., Thomson, J. A., Tiedt, D. R., Timalsina, M., To, W. H., Tomás, A., Tope, T. E., Tripathi, M., Tronstad, D. R., Tull, C. E., Turner, W., Tvrznikova, L., Utes, M., Utku, U., Uvarov, S., Va'vra, J., Vacheret, A., Vaitkus, A., Verbus, J. R., Vietanen, T., Voirin, E., Vuosalo, C. O., Walcott, S., Waldron, W. L., Walker, K., Wang, J. J., Wang, R., Wang, L., Wang, W., Wang, Y., Watson, J. R., Migneault, J., Weatherly, S., Webb, R. C., Wei, W. -Z., While, M., White, R. G., White, J. T., White, D. T., Whitis, T. J., Wisniewski, W. J., Wilson, K., Witherell, M. S., Wolfs, F. L. H., Wolfs, J. D., Woodward, D., Worm, S. D., Xiang, X., Xiao, Q., Xu, J., Yeh, M., Yin, J., Young, I., Zhang, C., and Zarzhitsky, P.
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 inherently low radioactivity content. The LZ collaboration performed an extensive radioassay campaign over a period of six years to inform material selection for construction and provide an input to the experimental background model against which any possible signal excess may be evaluated. The campaign and its results are described in this paper. We present assays of dust and radon daughters depositing on the surface of components as well as cleanliness controls necessary to maintain background expectations through detector construction and assembly. Finally, examples from the campaign to highlight fixed contaminant radioassays for the LZ photomultiplier tubes, quality control and quality assurance procedures through fabrication, radon emanation measurements of major sub-systems, and bespoke detector systems to assay scintillator are presented., Comment: 45 pages (79 inc. tables), 7 figures, 9 tables
Published: 2020
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276. Discrimination of electronic recoils from nuclear recoils in two-phase xenon time projection chambers

Author: LUX Collaboration, Akerib, D. S., Alsum, S., Araújo, H. M., Bai, X., Balajthy, J., Baxter, A., Bernard, E. P., Bernstein, A., Biesiadzinski, T. P., Boulton, E. M., Boxer, B., Brás, P., Burdin, S., Byram, D., Carmona-Benitez, M. C., Chan, C., Cutter, J. E., de Viveiros, L., Druszkiewicz, E., Fan, A., Fiorucci, S., Gaitskell, R. J., Ghag, C., Gilchriese, M. G. D., Gwilliam, C., Hall, C. R., Haselschwardt, S. J., Hertel, S. A., Hogan, D. P., Horn, M., Huang, D. Q., Ignarra, C. M., Jacobsen, R. G., Jahangir, O., Ji, W., Kamdin, K., Kazkaz, K., Khaitan, D., Korolkova, E. V., Kravitz, S., Kudryavtsev, V. A., Leason, E., Lenardo, B. G., Lesko, K. T., Liao, J., Lin, J., Lindote, A., Lopes, M. I., Manalaysay, A., Mannino, R. L., Marangou, N., McKinsey, D. N., Mei, D. -M., Moongweluwan, M., Morad, J. A., Murphy, A. St. J., Naylor, A., Nehrkorn, C., Nelson, H. N., Neves, F., Nilima, A., Oliver-Mallory, K. C., Palladino, K. J., Pease, E. K., Riffard, Q., Rischbieter, G. R. C., Rhyne, C., Rossiter, P., Shaw, S., Shutt, T. A., Silva, C., Solmaz, M., Solovov, V. N., Sorensen, P., Sumner, T. J., Szydagis, M., Taylor, D. J., Taylor, R., Taylor, W. C., Tennyson, B. P., Terman, P. A., Tiedt, D. R., To, W. H., Tvrznikova, L., Utku, U., Uvarov, S., Vacheret, A., Velan, V., Webb, R. C., White, J. T., Whitis, T. J., Witherell, M. S., Wolfs, F. L. H., Woodward, D., Xu, J., Zhang, C., LUX Collaboration, Akerib, D. S., Alsum, S., Araújo, H. M., Bai, X., Balajthy, J., Baxter, A., Bernard, E. P., Bernstein, A., Biesiadzinski, T. P., Boulton, E. M., Boxer, B., Brás, P., Burdin, S., Byram, D., Carmona-Benitez, M. C., Chan, C., Cutter, J. E., de Viveiros, L., Druszkiewicz, E., Fan, A., Fiorucci, S., Gaitskell, R. J., Ghag, C., Gilchriese, M. G. D., Gwilliam, C., Hall, C. R., Haselschwardt, S. J., Hertel, S. A., Hogan, D. P., Horn, M., Huang, D. Q., Ignarra, C. M., Jacobsen, R. G., Jahangir, O., Ji, W., Kamdin, K., Kazkaz, K., Khaitan, D., Korolkova, E. V., Kravitz, S., Kudryavtsev, V. A., Leason, E., Lenardo, B. G., Lesko, K. T., Liao, J., Lin, J., Lindote, A., Lopes, M. I., Manalaysay, A., Mannino, R. L., Marangou, N., McKinsey, D. N., Mei, D. -M., Moongweluwan, M., Morad, J. A., Murphy, A. St. J., Naylor, A., Nehrkorn, C., Nelson, H. N., Neves, F., Nilima, A., Oliver-Mallory, K. C., Palladino, K. J., Pease, E. K., Riffard, Q., Rischbieter, G. R. C., Rhyne, C., Rossiter, P., Shaw, S., Shutt, T. A., Silva, C., Solmaz, M., Solovov, V. N., Sorensen, P., Sumner, T. J., Szydagis, M., Taylor, D. J., Taylor, R., Taylor, W. C., Tennyson, B. P., Terman, P. A., Tiedt, D. R., To, W. H., Tvrznikova, L., Utku, U., Uvarov, S., Vacheret, A., Velan, V., Webb, R. C., White, J. T., Whitis, T. J., Witherell, M. S., Wolfs, F. L. H., Woodward, D., Xu, J., and Zhang, C.
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 nuclear recoil energy of $\sim$100 keV, we observe an electronic recoil background acceptance of $<10^{-5}$ at a nuclear recoil signal acceptance of 50%. We also observe modest electric field dependence of the discrimination power, which peaks at a field of around 300 V/cm over the range of fields explored in this study (50-500 V/cm). In the WIMP search region of S1 = 1-80 phd, the minimum electronic recoil leakage we observe is ${(7.3\pm0.6)\times10^{-4}}$, which is obtained for a drift field of 240-290 V/cm. Pulse shape discrimination is utilized to improve our results, and we find that, at low energies and low fields, there is an additional reduction in background leakage by a factor of up to 3. We develop an empirical model for recombination fluctuations which, when used alongside the Noble Element Scintillation Technique (NEST) simulation package, correctly reproduces the skewness of the electronic recoil data. We use this updated simulation to study the width of the electronic recoil band, finding that its dominant contribution comes from electron-ion recombination fluctuations, followed in magnitude of contribution by fluctuations in the S1 signal, fluctuations in the S2 signal, and fluctuations in the total number of quanta produced for a given energy deposition., Comment: 29 pages, 33 figures; minor typos corrected, references updated
Published: 2020
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277. Simulations of Events for the LUX-ZEPLIN (LZ) Dark Matter Experiment

Author: Collaboration, The LUX-ZEPLIN, Akerib, D. S., Akerlof, C. W., Alqahtani, A., Alsum, S. K., Anderson, T. J., Angelides, N., Araújo, H. M., Armstrong, J. E., Arthurs, M., Bai, X., Balajthy, J., Balashov, S., Bang, J., Bauer, D., Baxter, A., Bensinger, J., Bernard, E. P., Bernstein, A., Bhatti, A., Biekert, A., Biesiadzinski, T. P., Birch, H. J., Boast, K. E., Boxer, B., Brás, P., Buckley, J. H., Bugaev, V. V., Burdin, S., Busenitz, J. K., Cabrita, R., Carels, C., Carlsmith, D. L., Carmona-Benitez, M. C., Cascella, M., Chan, C., Chott, N. I., Cole, A., Cottle, A., Cutter, J. E., Dahl, C. E., de Viveiros, L., Dobson, J. E. Y., Druszkiewicz, E., Edberg, T. K., Eriksen, S. R., Fan, A., Fayer, S., Fiorucci, S., Flaecher, H., Fraser, E. D., Fruth, T., Gaitskell, R. J., Genovesi, J., Ghag, C., Gibson, E., Gilchriese, M. G. D., Gokhale, S., van der Grinten, M. G. D., Hall, C. R., Harrison, A., Haselschwardt, S. J., Hertel, S. A., Hor, J. Y-K., Horn, M., Huang, D. Q., Ignarra, C. M., Jahangir, O., Ji, W., Johnson, J., Kaboth, A. C., Kamaha, A. C., Kamdin, K., Kazkaz, K., Khaitan, D., Khazov, A., Khurana, I., Kocher, C. D., Korley, L., Korolkova, E. V., Kras, J., Kraus, H., Kravitz, S., Kreczko, L., Krikler, B., Kudryavtsev, V. A., Leason, E. A., Lee, J., Leonard, D. S., Lesko, K. T., Levy, C., Li, J., Liao, J., Liao, F. -T., Lin, J., Lindote, A., Linehan, R., Lippincott, W. H., Liu, R., Liu, X., Loniewski, C., Lopes, M. I., Paredes, B. López, Lorenzon, W., Luitz, S., Lyle, J. M., Majewski, P. A., Manalaysay, A., Manenti, L., Mannino, R. L., Marangou, N., Marzioni, M. F., McKinsey, D. N., McLaughlin, J., Meng, Y., Miller, E. H., Mizrachi, E., Monte, A., Monzani, M. E., Morad, J. A., Morrison, E., Mount, B. J., Murphy, A. St. J., Naim, D., Naylor, A., Nedlik, C., Nehrkorn, C., Nelson, H. N., Neves, F., Nikoleyczik, J. A., Nilima, A., Olcina, I., Oliver-Mallory, K. C., Pal, S., Palladino, K. J., Palmer, J., Parveen, N., Pease, E. K., Penning, B., Pereira, G., Piepke, A., Pushkin, K., Reichenbacher, J., Rhyne, C. A., Richards, A., Riffard, Q., Rischbieter, G. R. C., Rosero, R., Rossiter, P., Rutherford, G., Santone, D., Sazzad, A. B. M. R., Schnee, R. W., Schubnell, M., Scovell, P. R., Seymour, D., Shaw, S., Shutt, T. A., Silk, J. J., Silva, C., Smith, R., Solmaz, M., Solovov, V. N., Sorensen, P., Stancu, I., Stevens, A., Stifter, K., Sumner, T. J., Swanson, N., Szydagis, M., Tan, M., Taylor, W. C., Taylor, R., Temples, D. J., Terman, P. A., Tiedt, D. R., Timalsina, M., Tomás, A., Tripathi, M., Tronstad, D. R., Turner, W., Tvrznikova, L., Utku, U., Vacheret, A., Vaitkus, A., Wang, J. J., Wang, W., Watson, J. R., Webb, R. C., White, R. G., Whitis, T. J., Wolfs, F. L. H., Woodward, D., Xiang, X., Xu, J., Yeh, M., Zarzhitsky, P., Collaboration, The LUX-ZEPLIN, Akerib, D. S., Akerlof, C. W., Alqahtani, A., Alsum, S. K., Anderson, T. J., Angelides, N., Araújo, H. M., Armstrong, J. E., Arthurs, M., Bai, X., Balajthy, J., Balashov, S., Bang, J., Bauer, D., Baxter, A., Bensinger, J., Bernard, E. P., Bernstein, A., Bhatti, A., Biekert, A., Biesiadzinski, T. P., Birch, H. J., Boast, K. E., Boxer, B., Brás, P., Buckley, J. H., Bugaev, V. V., Burdin, S., Busenitz, J. K., Cabrita, R., Carels, C., Carlsmith, D. L., Carmona-Benitez, M. C., Cascella, M., Chan, C., Chott, N. I., Cole, A., Cottle, A., Cutter, J. E., Dahl, C. E., de Viveiros, L., Dobson, J. E. Y., Druszkiewicz, E., Edberg, T. K., Eriksen, S. R., Fan, A., Fayer, S., Fiorucci, S., Flaecher, H., Fraser, E. D., Fruth, T., Gaitskell, R. J., Genovesi, J., Ghag, C., Gibson, E., Gilchriese, M. G. D., Gokhale, S., van der Grinten, M. G. D., Hall, C. R., Harrison, A., Haselschwardt, S. J., Hertel, S. A., Hor, J. Y-K., Horn, M., Huang, D. Q., Ignarra, C. M., Jahangir, O., Ji, W., Johnson, J., Kaboth, A. C., Kamaha, A. C., Kamdin, K., Kazkaz, K., Khaitan, D., Khazov, A., Khurana, I., Kocher, C. D., Korley, L., Korolkova, E. V., Kras, J., Kraus, H., Kravitz, S., Kreczko, L., Krikler, B., Kudryavtsev, V. A., Leason, E. A., Lee, J., Leonard, D. S., Lesko, K. T., Levy, C., Li, J., Liao, J., Liao, F. -T., Lin, J., Lindote, A., Linehan, R., Lippincott, W. H., Liu, R., Liu, X., Loniewski, C., Lopes, M. I., Paredes, B. López, Lorenzon, W., Luitz, S., Lyle, J. M., Majewski, P. A., Manalaysay, A., Manenti, L., Mannino, R. L., Marangou, N., Marzioni, M. F., McKinsey, D. N., McLaughlin, J., Meng, Y., Miller, E. H., Mizrachi, E., Monte, A., Monzani, M. E., Morad, J. A., Morrison, E., Mount, B. J., Murphy, A. St. J., Naim, D., Naylor, A., Nedlik, C., Nehrkorn, C., Nelson, H. N., Neves, F., Nikoleyczik, J. A., Nilima, A., Olcina, I., Oliver-Mallory, K. C., Pal, S., Palladino, K. J., Palmer, J., Parveen, N., Pease, E. K., Penning, B., Pereira, G., Piepke, A., Pushkin, K., Reichenbacher, J., Rhyne, C. A., Richards, A., Riffard, Q., Rischbieter, G. R. C., Rosero, R., Rossiter, P., Rutherford, G., Santone, D., Sazzad, A. B. M. R., Schnee, R. W., Schubnell, M., Scovell, P. R., Seymour, D., Shaw, S., Shutt, T. A., Silk, J. J., Silva, C., Smith, R., Solmaz, M., Solovov, V. N., Sorensen, P., Stancu, I., Stevens, A., Stifter, K., Sumner, T. J., Swanson, N., Szydagis, M., Tan, M., Taylor, W. C., Taylor, R., Temples, D. J., Terman, P. A., Tiedt, D. R., Timalsina, M., Tomás, A., Tripathi, M., Tronstad, D. R., Turner, W., Tvrznikova, L., Utku, U., Vacheret, A., Vaitkus, A., Wang, J. J., Wang, W., Watson, J. R., Webb, R. C., White, R. G., Whitis, T. J., Wolfs, F. L. H., Woodward, D., Xiang, X., Xu, J., Yeh, M., and Zarzhitsky, P.
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 particular note are the event generators, which allow us to model the background radiation, and the detector response physics used in the production of raw signals, which can be converted into digitized waveforms similar to data from the operational detector. Inclusion of the detector response allows us to process simulated data using the same analysis routines as developed to process the experimental data., Comment: 24 pages, 19 figures; Corresponding Authors: A. Cottle, V. Kudryavtsev, D. Woodward
Published: 2020
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278. A inclusão nas aulas de matemática: análise da narrativa de uma estudante cega

Author: Peixoto, Jurema Lindote Botelho, Góes, Luis Eduardo Silva, and Bitencourt, Daiane Venancio
Subjects: Diseño, Inclusão no Ensino Superior, Ecology, Estudante cega, Alumnos discapacitados, Actitud, Análisis y reflexión sobre la enseñanza, Iran, Dificultades, Benthos, Aras reservoir, Motivación, Invertebrate, Ensino de Matemática, Biology
Abstract: This study was carried out at monthly basis covering six sampling stations in Aras reservoir in 1995, The samples were collected by Ekman grab with 3 replicates, The results Showed that Oligochaetes were the dominant taxa in this reservoir which were observed all year round and had the highest abundance and biomass, The Chironomidae were the second dominant family. Gammaridae and Mysidae had the least abundance and biomass, Maximum biomass of Oligochaetes was observed in spring with the average figure of 19.03 g/m2 and minimum biomass was observed in winter with average biomass of 5.87 g/m2 Maximum and minimum biomass or Chironomidae were recorded in summer and spring, of which their correspond average biomass were 1.52 and 0.06 g/m2, respectively. The highest and lowest biomass of Mysidae family were observed in summer and spring with the average biomass of 0.46 and 0.00 g/m2, respectively. Gammaridae family observed only in summer. The differences of biomass of these 3 families were significant based on kruskal-wallis nonparametric test (p0.05). Maximum (26.06 g/m2) and minimum biomass (3.14 g/m2) of benthic organisms were observed in stations 4 and 5, respectively and no remarkable variation was observed in the percentage of total organic matter (TOM) content during different seasons. Maximum and minimum average percentage of TOM were 6.66% to 4.79% in spring and winter, respectively. Based on collected data and obtained results, it can be assumed that feeding of fishes, sediment composition, amount of TOM and water temperature were the most important factors effect on temporal and spatial variation in population and biomass of benthic organisms of Aras reservoir.
Published: 2019

279. Projected sensitivity of the LUX-ZEPLIN experiment to the $0\nu\beta\beta$ decay of $^{136}$Xe

Author: Akerib, D. S., Akerlof, C. W., Alqahtani, A., Alsum, S. K., Anderson, T. J., Angelides, N., Araújo, H. M., Armstrong, J. E., Arthurs, M., Bai, X., Balajthy, J., Balashov, S., Bang, J., Baxter, A., Bensinger, J., Bernard, E. P., Bernstein, A., Bhatti, A., Biekert, A., Biesiadzinski, T. P., Birch, H. J., Boast, K. E., Boxer, B., Brás, P., Buckley, J. H., Bugaev, V. V., Burdin, S., Busenitz, J. K., Cabrita, R., Carels, C., Carlsmith, D. L., Benitez, M. C. Carmona, Cascella, M., Chan, C., Chott, N. I., Cole, A., Cottle, A., Cutter, J. E., Dahl, C. E., de Viveiros, L., Dobson, J. E. Y., Druszkiewicz, E., Edberg, T. K., Eriksen, S. R., Fan, A., Fiorucci, S., Flaecher, H., Fraser, E. D., Fruth, T., Gaitskell, R. J., Genovesi, J., Ghag, C., Gibson, E., Gilchriese, M. G. D., Gokhale, S., van der Grinten, M. G. D., Hall, C. R., Harrison, A., Haselschwardt, S. J., Hertel, S. A., Hor, J. YK., Horn, M., Huang, D. Q., Ignarra, C. M., Jahangir, O., Ji, W., Johnson, J., Kaboth, A. C., Kamaha, A. C., Kamdin, K., Kazkaz, K., Khaitan, D., Khazov, A., Khurana, I., Kocher, C. D., Korley, L., Korolkova, E. V., Kras, J., Kraus, H., Kravitz, S., Kreczko, L., Krikler, B., Kudryavtsev, V. A., Leason, E. A., Lee, J., Leonard, D. S., Lesko, K. T., Levy, C., Li, J., Liao, J., Liao, F. T., Lin, J., Lindote, A., Linehan, R., Lippincott, W. H., Liu, R., Liu, X., Loniewski, C., Lopes, M. I., Paredes, B. López, Lorenzon, W., Luitz, S., Lyle, J. M., Majewski, P. A., Manalaysay, A., Manenti, L., Mannino, R. L., Marangou, N., Marzioni, M. F., McKinsey, D. N., McLaughlin, J., Meng, Y., Miller, E. H., Mizrachi, E., Monte, A., Monzani, M. E., Morad, J. A., Morrison, E., Mount, B. J., Murphy, A. St. J., Naim, D., Naylor, A., Nedlik, C., Nehrkorn, C., Nelson, H. N., Neves, F., Nikoleyczik, J. A., Nilima, A., O'Sullivan, K., Olcina, I., Oliver-Mallory, K. C., Pal, S., Palladino, K. J., Palmer, J., Parveen, N., Pease, E. K., Penning, B., Pereira, G., Pushkin, K., Reichenbacher, J., Rhyne, C. A., Riffard, Q., Rischbieter, G. R. C., Rosero, R., Rossiter, P., Rutherford, G., Santone, D., Sazzad, A. B. M. R., Schnee, R. W., Schubnell, M., Seymour, D., Shaw, S., Shutt, T. A., Silk, J. J., Silva, C., Smith, R., Solmaz, M., Solovov, V. N., Sorensen, P., Stancu, I., Stevens, A., Stifter, K., Sumner, T. J., Swanson, N., Szydagis, M., Tan, M., Taylor, W. C., Taylor, R., Temples, D. J., Terman, P. A., Tiedt, D. R., Timalsina, M., Tomás, A., Tripathi, M., Tronstad, D. R., Turner, W., Tvrznikova, L., Utku, U., Vacheret, A., Vaitkus, A., Wang, J. J., Wang, W., Watson, J. R., Webb, R. C., White, R. G., Whitis, T. J., Wolfs, F. L. H., Woodward, D., Xiang, X., Xu, J., Yeh, M., and Zarzhitsky, P.
Subjects: Nuclear Experiment
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 live-days, the median exclusion sensitivity to the half-life of $^{136}$Xe is projected to be 1.06$\times$10$^{26}$ years (90% confidence level), similar to existing constraints. We also report the expected sensitivity of a possible subsequent dedicated exposure using 90% enrichment with $^{136}$Xe at 1.06$\times$10$^{27}$ years., Comment: 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
Published: 2019

280. The ZEPLIN-III dark matter detector: Instrument design, manufacture and commissioning

Author: Akimov, D.Yu., Alner, G.J., Araújo, H.M., Bewick, A., Bungau, C., Burenkov, A.A., Carson, M.J., Chagani, H., Chepel, V., Cline, D., Davidge, D., Daw, E., Dawson, J., Durkin, T., Edwards, B., Gamble, T., Chag, C., Hollingworth, R.J., Howard, A.S., Jones, W.G., Joshi, M., Mavrokoridis, K., Korolkova, E., Kovalenko, A., Kudryavtsev, V.A., Kuznetsov, I.S., Lawson, T., Lebedenko, V.N., Lewin, J.D., Lightfoot, P., Lindote, A., Liubarsky, I., Lopes, M.I., Lüscher, R., McMillan, J.E., Majewski, P., Morgan, B., Muna, D., Murphy, A.S., Neves, F., Nicklin, G.G., Paling, S.M., Pinto da Cunha, J., Plank, S.J.S., Preece, R., Quenby, J.J., Robinson, M., Silva, C., Solovov, V.N., Smith, N.J.T., Smith, P.F., Spooner, N.J.C., Stekhanov, V., Sumner, T.J., Thorne, C., Tovey, D.R., Tziaferi, E., Walker, R.J., Wang, H., White, J., and Wolfs, F.
Published: 2007
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281. The ZEPLIN III Detector; Results from Surface Calibrations

Author: Sumner, T.J., Akimov, D.Yu., Alner, G.J., Araújo, H.M., Bewick, A., Bungau, C., Burenkov, A.A., Carson, M.J., Chagani, H., Chepel, V., Cline, D., Davidge, D., Daw, E., Dawson, J., Durkin, T., Edwards, B., Gamble, T., Chag, C., Hollingworth, R.J., Howard, A.S., Jones, W.G., Joshi, M., Mavrokoridis, K., Korolkova, E., Kovalenko, A., Kudryavtsev, V.A., Kuznetsov, I.S., Lawson, T., Lebedenko, V.N., Lewin, J.D., Lightfoot, P., Lindote, A., Liubarsky, I., Lopes, M.I., Lüscher, R., McMillan, J.E., Majewski, P., Morgan, B., Muna, D., Murphy, A.S., Neves, F., Nicklin, G.G., Paling, S.M., Pinto da Cunha, J., Plank, S.J.S., Preece, R., Quenby, J.J., Robinson, M., Silva, C., Solovov, V.N., Smith, N.J.T., Smith, P.F., Spooner, N.J.C., Stekhanov, V., Thorne, C., Tovey, D.R., Tziaferi, E., Walker, R.J., Wang, H., White, J., and Wolfs, F.
Published: 2007
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282. A survey of energy loss calculations for heavy ions between 1 and 100 kev

Author: Mangiarotti, A., Lopes, M.I., Benabderrahmane, M.L., Chepel, V., Lindote, A., Pinto da Cunha, J., and Sona, P.
Published: 2007
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283. Preliminary results on position reconstruction for ZEPLIN III

Author: Lindote, A., Araujo, H.M., Pinto da Cunha, J., Akimov, D.Yu., Chepel, V., Davidge, D., Dawson, J.V., Joshi, M., Lebedenko, V.N., Liubarsky, I., Lopes, M.I., Neves, F., Quenby, J.J., Silva, C., Solovov, V., Sumner, T.J., Thorne, C., and Walker, R.J.
Published: 2007
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284. Position reconstruction in a liquid xenon scintillation chamber for low-energy nuclear recoils and γ-rays

Author: Neves, F., Solovov, V., Chepel, V., Lopes, M.I., da Cunha, J. Pinto, Lindote, A., and Silva, C.
Published: 2007
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285. Simulations of events for the LUX-ZEPLIN (LZ) dark matter experiment

Author: Akerib, D.S., primary, Akerlof, C.W., additional, Alqahtani, A., additional, Alsum, S.K., additional, Anderson, T.J., additional, Angelides, N., additional, Araújo, H.M., additional, Armstrong, J.E., additional, Arthurs, M., additional, Bai, X., additional, Balajthy, J., additional, Balashov, S., additional, Bang, J., additional, Bauer, D., additional, Baxter, A., additional, Bensinger, J., additional, Bernard, E.P., additional, Bernstein, A., additional, Bhatti, A., additional, Biekert, A., additional, Biesiadzinski, T.P., additional, Birch, H.J., additional, Boast, K.E., additional, Boxer, B., additional, Brás, P., additional, Buckley, J.H., additional, Bugaev, V.V., additional, Burdin, S., additional, Busenitz, J.K., additional, Cabrita, R., additional, Carels, C., additional, Carlsmith, D.L., additional, Carmona-Benitez, M.C., additional, Cascella, M., additional, Chan, C., additional, Chott, N.I., additional, Cole, A., additional, Cottle, A., additional, Cutter, J.E., additional, Dahl, C.E., additional, Viveiros, L. de, additional, Dobson, J.E.Y., additional, Druszkiewicz, E., additional, Edberg, T.K., additional, Eriksen, S.R., additional, Fan, A., additional, Fayer, S., additional, Fiorucci, S., additional, Flaecher, H., additional, Fraser, E.D., additional, Fruth, T., additional, Gaitskell, R.J., additional, Genovesi, J., additional, Ghag, C., additional, Gibson, E., additional, Gilchriese, M.G.D., additional, Gokhale, S., additional, van der Grinten, M.G.D., additional, Hall, C.R., additional, Harrison, A., additional, Haselschwardt, S.J., additional, Hertel, S.A., additional, Hor, J.Y-K., additional, Horn, M., additional, Huang, D.Q., additional, Ignarra, C.M., additional, Jahangir, O., additional, Ji, W., additional, Johnson, J., additional, Kaboth, A.C., additional, Kamaha, A.C., additional, Kamdin, K., additional, Kazkaz, K., additional, Khaitan, D., additional, Khazov, A., additional, Khurana, I., additional, Kocher, C.D., additional, Korley, L., additional, Korolkova, E.V., additional, Kras, J., additional, Kraus, H., additional, Kravitz, S., additional, Kreczko, L., additional, Krikler, B., additional, Kudryavtsev, V.A., additional, Leason, E.A., additional, Lee, J., additional, Leonard, D.S., additional, Lesko, K.T., additional, Levy, C., additional, Li, J., additional, Liao, J., additional, Liao, F.-T., additional, Lin, J., additional, Lindote, A., additional, Linehan, R., additional, Lippincott, W.H., additional, Liu, R., additional, Liu, X., additional, Loniewski, C., additional, Lopes, M.I., additional, López Paredes, B., additional, Lorenzon, W., additional, Luitz, S., additional, Lyle, J.M., additional, Majewski, P.A., additional, Manalaysay, A., additional, Manenti, L., additional, Mannino, R.L., additional, Marangou, N., additional, Marzioni, M.F., additional, McKinsey, D.N., additional, McLaughlin, J., additional, Meng, Y., additional, Miller, E.H., additional, Mizrachi, E., additional, Monte, A., additional, Monzani, M.E., additional, Morad, J.A., additional, Morrison, E., additional, Mount, B.J., additional, Murphy, A.St.J., additional, Naim, D., additional, Naylor, A., additional, Nedlik, C., additional, Nehrkorn, C., additional, Nelson, H.N., additional, Neves, F., additional, Nikoleyczik, J.A., additional, Nilima, A., additional, Olcina, I., additional, Oliver-Mallory, K.C., additional, Pal, S., additional, Palladino, K.J., additional, Palmer, J., additional, Parveen, N., additional, Pease, E.K., additional, Penning, B., additional, Pereira, G., additional, Piepke, A., additional, Pushkin, K., additional, Reichenbacher, J., additional, Rhyne, C.A., additional, Richards, A., additional, Riffard, Q., additional, Rischbieter, G.R.C., additional, Rosero, R., additional, Rossiter, P., additional, Rutherford, G., additional, Santone, D., additional, Sazzad, A.B.M.R., additional, Schnee, R.W., additional, Schubnell, M., additional, Scovell, P.R., additional, Seymour, D., additional, Shaw, S., additional, Shutt, T.A., additional, Silk, J.J., additional, Silva, C., additional, Smith, R., additional, Solmaz, M., additional, Solovov, V.N., additional, Sorensen, P., additional, Stancu, I., additional, Stevens, A., additional, Stifter, K., additional, Sumner, T.J., additional, Swanson, N., additional, Szydagis, M., additional, Tan, M., additional, Taylor, W.C., additional, Taylor, R., additional, Temples, D.J., additional, Terman, P.A., additional, Tiedt, D.R., additional, Timalsina, M., additional, Tomás, A., additional, Tripathi, M., additional, Tronstad, D.R., additional, Turner, W., additional, Tvrznikova, L., additional, Utku, U., additional, Vacheret, A., additional, Vaitkus, A., additional, Wang, J.J., additional, Wang, W., additional, Watson, J.R., additional, Webb, R.C., additional, White, R.G., additional, Whitis, T.J., additional, Wolfs, F.L.H., additional, Woodward, D., additional, Xiang, X., additional, Xu, J., additional, Yeh, M., additional, and Zarzhitsky, P., additional
Published: 2021
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286. FORMAÇÃO CONTINUADA À LUZ DA ETNOMODELAGEM: CONSTRUÇÃO DE UMA PROPOSTA DE ENSINO COM PROFESSORES QUE ENSINAM MATEMÁTICA NO ENSINO FUNDAMENTAL

Author: Eça, José Lucas Matias de, primary, Peixoto, Jurema Lindote Botelho, additional, and Madruga, Zulma Elizabete de Freitas, additional
Published: 2021
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287. Educação Matemática e surdez: um olhar sobre as tendências nas pesquisas nos GT13 dos últimos SIPEM

Author: Vigas, Tamillis Silva de Andrade, primary, Peixoto, Jurema Lindote Botelho, additional, and Silva, Flaviana Dos Santos, additional
Published: 2021
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288. Performance of a chamber for studying the liquid xenon response to [gamma]-rays and nuclear recoils

Author: Neves, F., Chepel, V., Solovov, V., Pereira, A., Lopes, M.I., da Cunha, J. Pinto, Mendes, P., Lindote, A., Silva, C.P., Marques, R. Ferreira, and Policarpo, A.J.P.L.
Subjects: Algorithms -- Research, Gamma rays -- Research, Nuclear radiation -- Research, Algorithm, Business, Electronics, Electronics and electrical industries
Abstract: The design and performance of a 1.2 liter liquid xenon chamber equipped with 7 two-inch photomultiplier tubes, with the purpose of studying the scintillation response of xenon to 'f-rays and neutrons, is described. Measurements with [gamma]-rays indicate a high VUV light collection efficiency resulting in ~5.5 photoelectrons per 1 keV of deposited energy. The energy resolution (FWHM) is 18% and 22%, for 122 keV and 511 keV [gamma]-rays, respectively. An algorithm for the reconstruction of the scintillation coordinates in (x, y) plane was developed and tested. The position resolution is estimated to be [sigma] = 6.9 mm for 122 keV [gamma]-rays. Index Terms--Gamma-rays, liquid xenon, nuclear recoils, Rayleigh scattering, scintillation.
Published: 2005

289. Scintillation efficiency of liquid xenon for nuclear recoils with the energy down to 5 keV

Author: Chepel, V., Solovov, V., Neves, F., Pereira, A., Mendes, P.J., Silva, C.P., Lindote, A., Pinto da Cunha, J., Lopes, M.I., and Kossionides, S.
Published: 2006
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290. A VIDEOAULA MEDIANDO O ENSINO DA MATEMÁTICA PARA SURDOS

Author: Peixoto, Jurema Lindote Botelho, primary and Lopes, Lucília Santos da França, additional
Published: 2020
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291. Investigation of background electron emission in the LUX detector

Author: Akerib, D. S., primary, Alsum, S., additional, Araújo, H. M., additional, Bai, X., additional, Balajthy, J., additional, Baxter, A., additional, Bernard, E. P., additional, Bernstein, A., additional, Biesiadzinski, T. P., additional, Boulton, E. M., additional, Boxer, B., additional, Brás, P., additional, Burdin, S., additional, Byram, D., additional, Carmona-Benitez, M. C., additional, Chan, C., additional, Cutter, J. E., additional, de Viveiros, L., additional, Druszkiewicz, E., additional, Fan, A., additional, Fiorucci, S., additional, Gaitskell, R. J., additional, Ghag, C., additional, Gilchriese, M. G. D., additional, Gwilliam, C., additional, Hall, C. R., additional, Haselschwardt, S. J., additional, Hertel, S. A., additional, Hogan, D. P., additional, Horn, M., additional, Huang, D. Q., additional, Ignarra, C. M., additional, Jacobsen, R. G., additional, Jahangir, O., additional, Ji, W., additional, Kamdin, K., additional, Kazkaz, K., additional, Khaitan, D., additional, Korolkova, E. V., additional, Kravitz, S., additional, Kudryavtsev, V. A., additional, Leason, E., additional, Lenardo, B. G., additional, Lesko, K. T., additional, Liao, J., additional, Lin, J., additional, Lindote, A., additional, Lopes, M. I., additional, Manalaysay, A., additional, Mannino, R. L., additional, Marangou, N., additional, McKinsey, D. N., additional, Mei, D.-M., additional, Moongweluwan, M., additional, Morad, J. A., additional, Murphy, A. St. J., additional, Naylor, A., additional, Nehrkorn, C., additional, Nelson, H. N., additional, Neves, F., additional, Nilima, A., additional, Oliver-Mallory, K. C., additional, Palladino, K. J., additional, Pease, E. K., additional, Riffard, Q., additional, Rischbieter, G. R. C., additional, Rhyne, C., additional, Rossiter, P., additional, Shaw, S., additional, Shutt, T. A., additional, Silva, C., additional, Solmaz, M., additional, Solovov, V. N., additional, Sorensen, P., additional, Sumner, T. J., additional, Szydagis, M., additional, Taylor, D. J., additional, Taylor, R., additional, Taylor, W. C., additional, Tennyson, B. P., additional, Terman, P. A., additional, Tiedt, D. R., additional, To, W. H., additional, Tvrznikova, L., additional, Utku, U., additional, Uvarov, S., additional, Vacheret, A., additional, Velan, V., additional, Webb, R. C., additional, White, J. T., additional, Whitis, T. J., additional, Witherell, M. S., additional, Wolfs, F. L. H., additional, Woodward, D., additional, Xu, J., additional, and Zhang, C., additional
Published: 2020
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292. The LUX-ZEPLIN (LZ) radioactivity and cleanliness control programs

Author: Akerib, D. S., primary, Akerlof, C. W., additional, Akimov, D. Yu., additional, Alquahtani, A., additional, Alsum, S. K., additional, Anderson, T. J., additional, Angelides, N., additional, Araújo, H. M., additional, Arbuckle, A., additional, Armstrong, J. E., additional, Arthurs, M., additional, Auyeung, H., additional, Aviles, S., additional, Bai, X., additional, Bailey, A. J., additional, Balajthy, J., additional, Balashov, S., additional, Bang, J., additional, Barry, M. J., additional, Bauer, D., additional, Bauer, P., additional, Baxter, A., additional, Belle, J., additional, Beltrame, P., additional, Bensinger, J., additional, Benson, T., additional, Bernard, E. P., additional, Bernstein, A., additional, Bhatti, A., additional, Biekert, A., additional, Biesiadzinski, T. P., additional, Birch, H. J., additional, Birrittella, B., additional, Boast, K. E., additional, Bolozdynya, A. I., additional, Boulton, E. M., additional, Boxer, B., additional, Bramante, R., additional, Branson, S., additional, Brás, P., additional, Breidenbach, M., additional, Brew, C. A. J., additional, Buckley, J. H., additional, Bugaev, V. V., additional, Bunker, R., additional, Burdin, S., additional, Busenitz, J. K., additional, Cabrita, R., additional, Campbell, J. S., additional, Carels, C., additional, Carlsmith, D. L., additional, Carlson, B., additional, Carmona-Benitez, M. C., additional, Cascella, M., additional, Chan, C., additional, Cherwinka, J. J., additional, Chiller, A. A., additional, Chiller, C., additional, Chott, N. I., additional, Cole, A., additional, Coleman, J., additional, Colling, D., additional, Conley, R. A., additional, Cottle, A., additional, Coughlen, R., additional, Cox, G., additional, Craddock, W. W., additional, Curran, D., additional, Currie, A., additional, Cutter, J. E., additional, da Cunha, J. P., additional, Dahl, C. E., additional, Dardin, S., additional, Dasu, S., additional, Davis, J., additional, Davison, T. J. R., additional, de Viveiros, L., additional, Decheine, N., additional, Dobi, A., additional, Dobson, J. E. Y., additional, Druszkiewicz, E., additional, Dushkin, A., additional, Edberg, T. K., additional, Edwards, W. R., additional, Edwards, B. N., additional, Edwards, J., additional, Elnimr, M. M., additional, Emmet, W. T., additional, Eriksen, S. R., additional, Faham, C. H., additional, Fan, A., additional, Fayer, S., additional, Fiorucci, S., additional, Flaecher, H., additional, Florang, I. M. Fogarty, additional, Ford, P., additional, Francis, V. B., additional, Fraser, E. D., additional, Froborg, F., additional, Fruth, T., additional, Gaitskell, R. J., additional, Gantos, N. J., additional, Garcia, D., additional, Gehman, V. M., additional, Gelfand, R., additional, Genovesi, J., additional, Gerhard, R. M., additional, Ghag, C., additional, Gibson, E., additional, Gilchriese, M. G. D., additional, Gokhale, S., additional, Gomber, B., additional, Gonda, T. G., additional, Greenall, A., additional, Greenwood, S., additional, Gregerson, G., additional, van der Grinten, M. G. D., additional, Gwilliam, C. B., additional, Hall, C. R., additional, Hamilton, D., additional, Hans, S., additional, Hanzel, K., additional, Harrington, T., additional, Harrison, A., additional, Harrison, J., additional, Hasselkus, C., additional, Haselschwardt, S. J., additional, Hemer, D., additional, Hertel, S. A., additional, Heise, J., additional, Hillbrand, S., additional, Hitchcock, O., additional, Hjemfelt, C., additional, Hoff, M. D., additional, Holbrook, B., additional, Holtom, E., additional, Hor, J. Y-K., additional, Horn, M., additional, Huang, D. Q., additional, Hurteau, T. W., additional, Ignarra, C. M., additional, Irving, M. N., additional, Jacobsen, R. G., additional, Jahangir, O., additional, Jeffery, S. N., additional, Ji, W., additional, Johnson, M., additional, Johnson, J., additional, Johnson, P., additional, Jones, W. G., additional, Kaboth, A. C., additional, Kamaha, A., additional, Kamdin, K., additional, Kasey, V., additional, Kazkaz, K., additional, Keefner, J., additional, Khaitan, D., additional, Khaleeq, M., additional, Khazov, A., additional, Khromov, A. V., additional, Khurana, I., additional, Kim, Y. D., additional, Kim, W. T., additional, Kocher, C. D., additional, Kodroff, D., additional, Konovalov, A. M., additional, Korley, L., additional, Korolkova, E. V., additional, Koyuncu, M., additional, Kras, J., additional, Kraus, H., additional, Kravitz, S. W., additional, Krebs, H. J., additional, Kreczko, L., additional, Krikler, B., additional, Kudryavtsev, V. A., additional, Kumpan, A. V., additional, Kyre, S., additional, Lambert, A. R., additional, Landerud, B., additional, Larsen, N. A., additional, Laundrie, A., additional, Leason, E. A., additional, Lee, H. S., additional, Lee, J., additional, Lee, C., additional, Lenardo, B. G., additional, Leonard, D. S., additional, Leonard, R., additional, Lesko, K. T., additional, Levy, C., additional, Li, J., additional, Liu, Y., additional, Liao, J., additional, Liao, F.-T., additional, Lin, J., additional, Lindote, A., additional, Linehan, R., additional, Lippincott, W. H., additional, Liu, R., additional, Liu, X., additional, Loniewski, C., additional, Lopes, M. I., additional, Lopez-Asamar, E., additional, Paredes, B. López, additional, Lorenzon, W., additional, Lucero, D., additional, Luitz, S., additional, Lyle, J. M., additional, Lynch, C., additional, Majewski, P. A., additional, Makkinje, J., additional, Malling, D. C., additional, Manalaysay, A., additional, Manenti, L., additional, Mannino, R. L., additional, Marangou, N., additional, Markley, D. J., additional, MarrLaundrie, P., additional, Martin, T. J., additional, Marzioni, M. F., additional, Maupin, C., additional, McConnell, C. T., additional, McKinsey, D. N., additional, McLaughlin, J., additional, Mei, D.-M., additional, Meng, Y., additional, Miller, E. H., additional, Minaker, Z. J., additional, Mizrachi, E., additional, Mock, J., additional, Molash, D., additional, Monte, A., additional, Monzani, M. E., additional, Morad, J. A., additional, Morrison, E., additional, Mount, B. J., additional, Murphy, A. St. J., additional, Naim, D., additional, Naylor, A., additional, Nedlik, C., additional, Nehrkorn, C., additional, Nelson, H. N., additional, Nesbit, J., additional, Neves, F., additional, Nikkel, J. A., additional, Nikoleyczik, J. A., additional, Nilima, A., additional, O’Dell, J., additional, Oh, H., additional, O’Neill, F. G., additional, O’Sullivan, K., additional, Olcina, I., additional, Olevitch, M. A., additional, Oliver-Mallory, K. C., additional, Oxborough, L., additional, Pagac, A., additional, Pagenkopf, D., additional, Pal, S., additional, Palladino, K. J., additional, Palmaccio, V. M., additional, Palmer, J., additional, Pangilinan, M., additional, Parveen, N., additional, Patton, S. J., additional, Pease, E. K., additional, Penning, B. P., additional, Pereira, G., additional, Pereira, C., additional, Peterson, I. B., additional, Piepke, A., additional, Pierson, S., additional, Powell, S., additional, Preece, R. M., additional, Pushkin, K., additional, Qie, Y., additional, Racine, M., additional, Ratcliff, B. N., additional, Reichenbacher, J., additional, Reichhart, L., additional, Rhyne, C. A., additional, Richards, A., additional, Riffard, Q., additional, Rischbieter, G. R. C., additional, Rodrigues, J. P., additional, Rose, H. J., additional, Rosero, R., additional, Rossiter, P., additional, Rucinski, R., additional, Rutherford, G., additional, Saba, J. S., additional, Sabarots, L., additional, Santone, D., additional, Sarychev, M., additional, Sazzad, A. B. M. R., additional, Schnee, R. W., additional, Schubnell, M., additional, Scovell, P. R., additional, Severson, M., additional, Seymour, D., additional, Shaw, S., additional, Shutt, G. W., additional, Shutt, T. A., additional, Silk, J. J., additional, Silva, C., additional, Skarpaas, K., additional, Skulski, W., additional, Smith, A. R., additional, Smith, R. J., additional, Smith, R. E., additional, So, J., additional, Solmaz, M., additional, Solovov, V. N., additional, Sorensen, P., additional, Sosnovtsev, V. V., additional, Stancu, I., additional, Stark, M. R., additional, Stephenson, S., additional, Stern, N., additional, Stevens, A., additional, Stiegler, T. M., additional, Stifter, K., additional, Studley, R., additional, Sumner, T. J., additional, Sundarnath, K., additional, Sutcliffe, P., additional, Swanson, N., additional, Szydagis, M., additional, Tan, M., additional, Taylor, W. C., additional, Taylor, R., additional, Taylor, D. J., additional, Temples, D., additional, Tennyson, B. P., additional, Terman, P. A., additional, Thomas, K. J., additional, Thomson, J. A., additional, Tiedt, D. R., additional, Timalsina, M., additional, To, W. H., additional, Tomás, A., additional, Tope, T. E., additional, Tripathi, M., additional, Tronstad, D. R., additional, Tull, C. E., additional, Turner, W., additional, Tvrznikova, L., additional, Utes, M., additional, Utku, U., additional, Uvarov, S., additional, Va’vra, J., additional, Vacheret, A., additional, Vaitkus, A., additional, Verbus, J. R., additional, Vietanen, T., additional, Voirin, E., additional, Vuosalo, C. O., additional, Walcott, S., additional, Waldron, W. L., additional, Walker, K., additional, Wang, J. J., additional, Wang, R., additional, Wang, L., additional, Wang, W., additional, Wang, Y., additional, Watson, J. R., additional, Migneault, J., additional, Weatherly, S., additional, Webb, R. C., additional, Wei, W.-Z., additional, While, M., additional, White, R. G., additional, White, J. T., additional, White, D. T., additional, Whitis, T. J., additional, Wisniewski, W. J., additional, Wilson, K., additional, Witherell, M. S., additional, Wolfs, F. L. H., additional, Wolfs, J. D., additional, Woodward, D., additional, Worm, S. D., additional, Xiang, X., additional, Xiao, Q., additional, Xu, J., additional, Yeh, M., additional, Yin, J., additional, Young, I., additional, Zhang, C., additional, and Zarzhitsky, P., additional
Published: 2020
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293. A INCLUSÃO DOS SURDOS NAS AULAS DE MATEMÁTICA: ANÁLISE DAS RELAÇÕES PEDAGÓGICAS NA TRÍADE PROFESSORA-INTÉRPRETE-SURDO / THE INCLUSION OF DEAF PEOPLE ON MATH CLASSES: PEDAGOGICAL ANALYSES OF THE TRIAD RELATION TEACHER - INTERPRETER - DEAF STUDENT

Author: Muniz, Salvador Cardoso Silva, primary, Peixoto, Jurema Lindote Botelho, additional, and Magina, Sandra Maria Pinto, additional
Published: 2020
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294. Mapeamento das produções relacionadas a Modelagem Matemática e deficiência intelectual: um olhar nas pesquisas recentes

Author: Junior, Edmilson Ferreira Pereira, primary and Peixoto, Jurema Lindote Botelho, primary
Published: 2020
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295. Measurement of the gamma ray background in the Davis cavern at the Sanford Underground Research Facility

Author: Akerib, D.S., primary, Akerlof, C.W., additional, Alsum, S.K., additional, Angelides, N., additional, Araújo, H.M., additional, Armstrong, J.E., additional, Arthurs, M., additional, Bai, X., additional, Balajthy, J., additional, Balashov, S., additional, Baxter, A., additional, Bernard, E.P., additional, Biekert, A., additional, Biesiadzinski, T.P., additional, Boast, K.E., additional, Boxer, B., additional, Brás, P., additional, Buckley, J.H., additional, Bugaev, V.V., additional, Burdin, S., additional, Busenitz, J.K., additional, Carels, C., additional, Carlsmith, D.L., additional, Carmona-Benitez, M.C., additional, Cascella, M., additional, Chan, C., additional, Cole, A., additional, Cottle, A., additional, Cutter, J.E., additional, Dahl, C.E., additional, de Viveiros, L., additional, Dobson, J.E.Y., additional, Druszkiewicz, E., additional, Edberg, T.K., additional, Fan, A., additional, Fiorucci, S., additional, Flaecher, H., additional, Fruth, T., additional, Gaitskell, R.J., additional, Genovesi, J., additional, Ghag, C., additional, Gilchriese, M.G.D., additional, Gokhale, S., additional, van der Grinten, M.G.D., additional, Hall, C.R., additional, Hans, S., additional, Harrison, J., additional, Haselschwardt, S.J., additional, Hertel, S.A., additional, Hor, J.Y-K., additional, Horn, M., additional, Huang, D.Q., additional, Ignarra, C.M., additional, Jahangir, O., additional, Ji, W., additional, Johnson, J., additional, Kaboth, A.C., additional, Kamdin, K., additional, Khaitan, D., additional, Khazov, A., additional, Kim, W.T., additional, Kocher, C.D., additional, Korley, L., additional, Korolkova, E.V., additional, Kras, J., additional, Kraus, H., additional, Kravitz, S.W., additional, Kreczko, L., additional, Krikler, B., additional, Kudryavtsev, V.A., additional, Leason, E.A., additional, Lee, J., additional, Leonard, D.S., additional, Lesko, K.T., additional, Levy, C., additional, Li, J., additional, Liao, J., additional, Liao, F.-T., additional, Lin, J., additional, Lindote, A., additional, Linehan, R., additional, Lippincott, W.H., additional, Liu, R., additional, Liu, X., additional, Loniewski, C., additional, Lopes, M.I., additional, López Paredes, B., additional, Lorenzon, W., additional, Luitz, S., additional, Lyle, J.M., additional, Majewski, P.A., additional, Manalaysay, A., additional, Manenti, L., additional, Mannino, R.L., additional, Marangou, N., additional, Marzioni, M.F., additional, McKinsey, D.N., additional, McLaughlin, J., additional, Meng, Y., additional, Miller, E.H., additional, Monzani, M.E., additional, Morad, J.A., additional, Morrison, E., additional, Mount, B.J., additional, Murphy, A.St.J., additional, Naim, D., additional, Naylor, A., additional, Nedlik, C., additional, Nehrkorn, C., additional, Nelson, H.N., additional, Neves, F., additional, Nikoleyczik, J., additional, Nilima, A., additional, Olcina, I., additional, Oliver-Mallory, K.C., additional, Pal, S., additional, Palladino, K.J., additional, Pease, E.K., additional, Penning, B.P., additional, Pereira, G., additional, Piepke, A., additional, Pushkin, K., additional, Reichenbacher, J., additional, Rhyne, C.A., additional, Riffard, Q., additional, Rischbieter, G.R.C., additional, Rodrigues, J.P., additional, Rosero, R., additional, Rossiter, P., additional, Rutherford, G., additional, Sazzad, A.B.M.R., additional, Schnee, R.W., additional, Schubnell, M., additional, Scovell, P.R., additional, Seymour, D., additional, Shaw, S., additional, Shutt, T.A., additional, Silk, J.J., additional, Silva, C., additional, Solmaz, M., additional, Solovov, V.N., additional, Sorensen, P., additional, Stancu, I., additional, Stevens, A., additional, Stiegler, T.M., additional, Stifter, K., additional, Szydagis, M., additional, Taylor, W.C., additional, Taylor, R., additional, Temples, D., additional, Terman, P.A., additional, Tiedt, D.R., additional, Timalsina, M., additional, Tomás, A., additional, Tripathi, M., additional, Tvrznikova, L., additional, Utku, U., additional, Uvarov, S., additional, Vacheret, A., additional, Wang, J.J., additional, Watson, J.R., additional, Webb, R.C., additional, White, R.G., additional, Whitis, T.J., additional, Wolfs, F.L.H., additional, Woodward, D., additional, and Yin, J., additional
Published: 2020
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296. Improved modeling of β electronic recoils in liquid xenon using LUX calibration data

Author: Akerib, D.S., primary, Alsum, S., additional, Araújo, H.M., additional, Bai, X., additional, Balajthy, J., additional, Baxter, A., additional, Bernard, E.P., additional, Bernstein, A., additional, Biesiadzinski, T.P., additional, Boulton, E.M., additional, Boxer, B., additional, Brás, P., additional, Burdin, S., additional, Byram, D., additional, Carmona-Benitez, M.C., additional, Chan, C., additional, Cutter, J.E., additional, de\Viveiros, L., additional, Druszkiewicz, E., additional, Fan, A., additional, Fiorucci, S., additional, Gaitskell, R.J., additional, Ghag, C., additional, Gilchriese, M.G.D., additional, Gwilliam, C., additional, Hall, C.R., additional, Haselschwardt, S.J., additional, Hertel, S.A., additional, Hogan, D.P., additional, Horn, M., additional, Huang, D.Q., additional, Ignarra, C.M., additional, Jacobsen, R.G., additional, Jahangir, O., additional, Ji, W., additional, Kamdin, K., additional, Kazkaz, K., additional, Khaitan, D., additional, Korolkova, E.V., additional, Kravitz, S., additional, Kudryavtsev, V.A., additional, Leason, E., additional, Lenardo, B.G., additional, Lesko, K.T., additional, Liao, J., additional, Lin, J., additional, Lindote, A., additional, Lopes, M.I., additional, Manalaysay, A., additional, Mannino, R.L., additional, Marangou, N., additional, Marzioni, M.F., additional, McKinsey, D.N., additional, Mei, D.-M., additional, Moongweluwan, M., additional, Morad, J.A., additional, Murphy, A.St.J., additional, Naylor, A., additional, Nehrkorn, C., additional, Nelson, H.N., additional, Neves, F., additional, Nilima, A., additional, Oliver-Mallory, K.C., additional, Palladino, K.J., additional, Pease, E.K., additional, Riffard, Q., additional, Rischbieter, G.R.C., additional, Rhyne, C., additional, Rossiter, P., additional, Shaw, S., additional, Shutt, T.A., additional, Silva, C., additional, Solmaz, M., additional, Solovov, V.N., additional, Sorensen, P., additional, Sumner, T.J., additional, Szydagis, M., additional, Taylor, D.J., additional, Taylor, R., additional, Taylor, W.C., additional, Tennyson, B.P., additional, Terman, P.A., additional, Tiedt, D.R., additional, To, W.H., additional, Tripathi, M., additional, Tvrznikova, L., additional, Utku, U., additional, Uvarov, S., additional, Vacheret, A., additional, Velan, V., additional, Webb, R.C., additional, White, J.T., additional, Whitis, T.J., additional, Witherell, M.S., additional, Wolfs, F.L.H., additional, Woodward, D., additional, Xu, J., additional, and Zhang, C., additional
Published: 2020
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297. The LUX-ZEPLIN (LZ) experiment

Author: Akerib, D.S., primary, Akerlof, C.W., additional, Akimov, D.Yu., additional, Alquahtani, A., additional, Alsum, S.K., additional, Anderson, T.J., additional, Angelides, N., additional, Araújo, H.M., additional, Arbuckle, A., additional, Armstrong, J.E., additional, Arthurs, M., additional, Auyeung, H., additional, Bai, X., additional, Bailey, A.J., additional, Balajthy, J., additional, Balashov, S., additional, Bang, J., additional, Barry, M.J., additional, Barthel, J., additional, Bauer, D., additional, Bauer, P., additional, Baxter, A., additional, Belle, J., additional, Beltrame, P., additional, Bensinger, J., additional, Benson, T., additional, Bernard, E.P., additional, Bernstein, A., additional, Bhatti, A., additional, Biekert, A., additional, Biesiadzinski, T.P., additional, Birrittella, B., additional, Boast, K.E., additional, Bolozdynya, A.I., additional, Boulton, E.M., additional, Boxer, B., additional, Bramante, R., additional, Branson, S., additional, Brás, P., additional, Breidenbach, M., additional, Buckley, J.H., additional, Bugaev, V.V., additional, Bunker, R., additional, Burdin, S., additional, Busenitz, J.K., additional, Campbell, J.S., additional, Carels, C., additional, Carlsmith, D.L., additional, Carlson, B., additional, Carmona-Benitez, M.C., additional, Cascella, M., additional, Chan, C., additional, Cherwinka, J.J., additional, Chiller, A.A., additional, Chiller, C., additional, Chott, N.I., additional, Cole, A., additional, Coleman, J., additional, Colling, D., additional, Conley, R.A., additional, Cottle, A., additional, Coughlen, R., additional, Craddock, W.W., additional, Curran, D., additional, Currie, A., additional, Cutter, J.E., additional, da Cunha, J.P., additional, Dahl, C.E., additional, Dardin, S., additional, Dasu, S., additional, Davis, J., additional, Davison, T.J.R., additional, de Viveiros, L., additional, Decheine, N., additional, Dobi, A., additional, Dobson, J.E.Y., additional, Druszkiewicz, E., additional, Dushkin, A., additional, Edberg, T.K., additional, Edwards, W.R., additional, Edwards, B.N., additional, Edwards, J., additional, Elnimr, M.M., additional, Emmet, W.T., additional, Eriksen, S.R., additional, Faham, C.H., additional, Fan, A., additional, Fayer, S., additional, Fiorucci, S., additional, Flaecher, H., additional, Fogarty Florang, I.M., additional, Ford, P., additional, Francis, V.B., additional, Froborg, F., additional, Fruth, T., additional, Gaitskell, R.J., additional, Gantos, N.J., additional, Garcia, D., additional, Geffre, A., additional, Gehman, V.M., additional, Gelfand, R., additional, Genovesi, J., additional, Gerhard, R.M., additional, Ghag, C., additional, Gibson, E., additional, Gilchriese, M.G.D., additional, Gokhale, S., additional, Gomber, B., additional, Gonda, T.G., additional, Greenall, A., additional, Greenwood, S., additional, Gregerson, G., additional, van der Grinten, M.G.D., additional, Gwilliam, C.B., additional, Hall, C.R., additional, Hamilton, D., additional, Hans, S., additional, Hanzel, K., additional, Harrington, T., additional, Harrison, A., additional, Hasselkus, C., additional, Haselschwardt, S.J., additional, Hemer, D., additional, Hertel, S.A., additional, Heise, J., additional, Hillbrand, S., additional, Hitchcock, O., additional, Hjemfelt, C., additional, Hoff, M.D., additional, Holbrook, B., additional, Holtom, E., additional, Hor, J.Y-K., additional, Horn, M., additional, Huang, D.Q., additional, Hurteau, T.W., additional, Ignarra, C.M., additional, Irving, M.N., additional, Jacobsen, R.G., additional, Jahangir, O., additional, Jeffery, S.N., additional, Ji, W., additional, Johnson, M., additional, Johnson, J., additional, Johnson, P., additional, Jones, W.G., additional, Kaboth, A.C., additional, Kamaha, A., additional, Kamdin, K., additional, Kasey, V., additional, Kazkaz, K., additional, Keefner, J., additional, Khaitan, D., additional, Khaleeq, M., additional, Khazov, A., additional, Khromov, A.V., additional, Khurana, I., additional, Kim, Y.D., additional, Kim, W.T., additional, Kocher, C.D., additional, Konovalov, A.M., additional, Korley, L., additional, Korolkova, E.V., additional, Koyuncu, M., additional, Kras, J., additional, Kraus, H., additional, Kravitz, S.W., additional, Krebs, H.J., additional, Kreczko, L., additional, Krikler, B., additional, Kudryavtsev, V.A., additional, Kumpan, A.V., additional, Kyre, S., additional, Lambert, A.R., additional, Landerud, B., additional, Larsen, N.A., additional, Laundrie, A., additional, Leason, E.A., additional, Lee, H.S., additional, Lee, J., additional, Lee, C., additional, Lenardo, B.G., additional, Leonard, D.S., additional, Leonard, R., additional, Lesko, K.T., additional, Levy, C., additional, Li, J., additional, Liu, Y., additional, Liao, J., additional, Liao, F.-T., additional, Lin, J., additional, Lindote, A., additional, Linehan, R., additional, Lippincott, W.H., additional, Liu, R., additional, Liu, X., additional, Loniewski, C., additional, Lopes, M.I., additional, López Paredes, B., additional, Lorenzon, W., additional, Lucero, D., additional, Luitz, S., additional, Lyle, J.M., additional, Lynch, C., additional, Majewski, P.A., additional, Makkinje, J., additional, Malling, D.C., additional, Manalaysay, A., additional, Manenti, L., additional, Mannino, R.L., additional, Marangou, N., additional, Markley, D.J., additional, MarrLaundrie, P., additional, Martin, T.J., additional, Marzioni, M.F., additional, Maupin, C., additional, McConnell, C.T., additional, McKinsey, D.N., additional, McLaughlin, J., additional, Mei, D.-M., additional, Meng, Y., additional, Miller, E.H., additional, Minaker, Z.J., additional, Mizrachi, E., additional, Mock, J., additional, Molash, D., additional, Monte, A., additional, Monzani, M.E., additional, Morad, J.A., additional, Morrison, E., additional, Mount, B.J., additional, Murphy, A.St.J., additional, Naim, D., additional, Naylor, A., additional, Nedlik, C., additional, Nehrkorn, C., additional, Nelson, H.N., additional, Nesbit, J., additional, Neves, F., additional, Nikkel, J.A., additional, Nikoleyczik, J.A., additional, Nilima, A., additional, O’Dell, J., additional, Oh, H., additional, O’Neill, F.G., additional, O’Sullivan, K., additional, Olcina, I., additional, Olevitch, M.A., additional, Oliver-Mallory, K.C., additional, Oxborough, L., additional, Pagac, A., additional, Pagenkopf, D., additional, Pal, S., additional, Palladino, K.J., additional, Palmaccio, V.M., additional, Palmer, J., additional, Pangilinan, M., additional, Patton, S.J., additional, Pease, E.K., additional, Penning, B.P., additional, Pereira, G., additional, Pereira, C., additional, Peterson, I.B., additional, Piepke, A., additional, Pierson, S., additional, Powell, S., additional, Preece, R.M., additional, Pushkin, K., additional, Qie, Y., additional, Racine, M., additional, Ratcliff, B.N., additional, Reichenbacher, J., additional, Reichhart, L., additional, Rhyne, C.A., additional, Richards, A., additional, Riffard, Q., additional, Rischbieter, G.R.C., additional, Rodrigues, J.P., additional, Rose, H.J., additional, Rosero, R., additional, Rossiter, P., additional, Rucinski, R., additional, Rutherford, G., additional, Rynders, D., additional, Saba, J.S., additional, Sabarots, L., additional, Santone, D., additional, Sarychev, M., additional, Sazzad, A.B.M.R., additional, Schnee, R.W., additional, Schubnell, M., additional, Scovell, P.R., additional, Severson, M., additional, Seymour, D., additional, Shaw, S., additional, Shutt, G.W., additional, Shutt, T.A., additional, Silk, J.J., additional, Silva, C., additional, Skarpaas, K., additional, Skulski, W., additional, Smith, A.R., additional, Smith, R.J., additional, Smith, R.E., additional, So, J., additional, Solmaz, M., additional, Solovov, V.N., additional, Sorensen, P., additional, Sosnovtsev, V.V., additional, Stancu, I., additional, Stark, M.R., additional, Stephenson, S., additional, Stern, N., additional, Stevens, A., additional, Stiegler, T.M., additional, Stifter, K., additional, Studley, R., additional, Sumner, T.J., additional, Sundarnath, K., additional, Sutcliffe, P., additional, Swanson, N., additional, Szydagis, M., additional, Tan, M., additional, Taylor, W.C., additional, Taylor, R., additional, Taylor, D.J., additional, Temples, D., additional, Tennyson, B.P., additional, Terman, P.A., additional, Thomas, K.J., additional, Thomson, J.A., additional, Tiedt, D.R., additional, Timalsina, M., additional, To, W.H., additional, Tomás, A., additional, Tope, T.E., additional, Tripathi, M., additional, Tronstad, D.R., additional, Tull, C.E., additional, Turner, W., additional, Tvrznikova, L., additional, Utes, M., additional, Utku, U., additional, Uvarov, S., additional, Va’vra, J., additional, Vacheret, A., additional, Vaitkus, A., additional, Verbus, J.R., additional, Vietanen, T., additional, Voirin, E., additional, Vuosalo, C.O., additional, Walcott, S., additional, Waldron, W.L., additional, Walker, K., additional, Wang, J.J., additional, Wang, R., additional, Wang, L., additional, Wang, Y., additional, Watson, J.R., additional, Migneault, J., additional, Weatherly, S., additional, Webb, R.C., additional, Wei, W.-Z., additional, While, M., additional, White, R.G., additional, White, J.T., additional, White, D.T., additional, Whitis, T.J., additional, Wisniewski, W.J., additional, Wilson, K., additional, Witherell, M.S., additional, Wolfs, F.L.H., additional, Wolfs, J.D., additional, Woodward, D., additional, Worm, S.D., additional, Xiang, X., additional, Xiao, Q., additional, Xu, J., additional, Yeh, M., additional, Yin, J., additional, Young, I., additional, and Zhang, C., additional
Published: 2020
Full Text: View/download PDF

298. Ensino de Matemática para surdos: mapeamento de pesquisas sobre resolução de problemas

Author: Pinheiro, Fabrício Andrade, primary, Muniz, Salvador Cardoso Silva, additional, Peixoto, Jurema Lindote Botelho, additional, and Madruga, Zulma Elizabete de Freitas, additional
Published: 2020
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299. Discalculia do Desenvolvimento: uma proposta de rastreio no campo educacional

Author: Bortoloti, Roberta DAngela Menduni, primary, Peixoto, Jurema Lindote Botelho, additional, and Silva, Talita Neves, additional
Published: 2020
Full Text: View/download PDF

300. A matemática no PIBID Interdisciplinar: educação inclusiva

Author: Peixoto, Jurema Lindote Botelho, primary, Fernandes, Cristiane Andrade, additional, and Almeida, Wolney Gomes, additional
Published: 2020
Full Text: View/download PDF

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