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arXiv · 2003.11141

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

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.

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D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, A. Baxter, E. P. Bernard, A. Bernstein, T. P. Biesiadzinski, E. M. Boulton, B. Boxer, P. Brás, S. Burdin, D. Byram, M. C. Carmona-Benitez, C. Chan, J. E. Cutter, L. de Viveiros, E. Druszkiewicz, A. Fan, S. Fiorucci, R. J. Gaitskell, C. Ghag, M. G. D. Gilchriese, C. Gwilliam, C. R. Hall, S. J. Haselschwardt, S. A. Hertel, D. P. Hogan, M. Horn, D. Q. Huang, C. M. Ignarra, R. G. Jacobsen, O. Jahangir, W. Ji, K. Kamdin, K. Kazkaz, D. Khaitan, E. V. Korolkova, S. Kravitz, V. A. Kudryavtsev, N. A. Larsen, E. Leason, B. G. Lenardo, K. T. Lesko, J. Liao, J. Lin, A. Lindote, M. I. Lopes, A. Manalaysay, R. L. Mannino, N. Marangou, D. N. McKinsey, D. -M. Mei, M. Moongweluwan, J. A. Morad, A. St. J. Murphy, A. Naylor, C. Nehrkorn, H. N. Nelson, F. Neves, A. Nilima, K. C. Oliver-Mallory, K. J. Palladino, E. K. Pease, Q. Riffard, G. R. C. Rischbieter, C. Rhyne, P. Rossiter, S. Shaw, T. A. Shutt, C. Silva, M. Solmaz, V. N. Solovov, P. Sorensen, T. J. Sumner, M. Szydagis, D. J. Taylor, R. Taylor, W. C. Taylor, B. P. Tennyson, P. A. Terman, D. R. Tiedt, W. H. To, L. Tvrznikova, U. Utku, S. Uvarov, A. Vacheret, V. Velan, R. C. Webb, J. T. White, T. J. Whitis, M. S. Witherell, F. L. H. Wolfs, D. Woodward, J. Xu, C. Zhang. 2020-03-24. An Effective Field Theory Analysis of the First LUX Dark Matter Search. https://doi.org/10.1103/physrevd.103.122005

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