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Constraints on effective field theory couplings using 311.2 days of LUX data

Physical review. D/Physical review. D.2021Vol. 104(6)

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D. S. Akerib, S. Alsum, H. M. Araújo, X. Bai, J. Balajthy, J. Bang, 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. B. Gwilliam, C. 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, E. Leason, B. G. Lenardo, K. T. Lesko, J. Liao, J. Lin, A. Lindote, I. Lopes, A. Manalaysay, R. L. Mannino, N. Marangou, D. N. McKinsey, Dongming Mei, J. A. Morad, A. St. J. Murphy, A. Naylor, C. Nehrkorn, H. Nelson, F. Neves, A. Nilima, K. C. Oliver-Mallory, K. J. Palladino, C. Rhyne, Q. Riffard, G. R. C. Rischbieter, P. Rossiter, S. Shaw, T. A. Shutt, C. Silva, M. Solmaz, V. N. Solovov, P. Sørensen, T. J. Sumner, N. Swanson, M. Szydagis, D. J. Taylor, R. Taylor, WC Taylor, B. P. Tennyson, P. A. Terman, D. R. Tiedt, W. To, L. Tvrznikova, U. Utku, A. Vacheret, Audrius Vaitkus, V. Velan, R. C. Webb, James T. White, T. J. Whitis, M. S. Witherell, F. L. H. Wolfs, D. Woodward, X. Xiang, Jing Xu, C. Zhang

Abstract

We report here the results of a nonrelativistic effective field theory (EFT) WIMP search analysis using LUX data. We build upon previous LUX analyses by extending the search window to include nuclear recoil energies up to $\ensuremath{\sim}180\text{ }\text{ }{\mathrm{keV}}_{\mathrm{nr}}$, requiring a reassessment of data quality criteria and background models. In order to use an unbinned profile likelihood statistical framework, the development of new analysis techniques to account for higher-energy backgrounds was required. With a $3.14\ifmmode\times\else\texttimes\fi{}{10}^{4}\text{ }\text{ }\mathrm{kg}\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{day}$ exposure using data collected between 2014 and 2016, we find our data is compatible with the background expectation and set 90% C.L. exclusion limits on nonrelativistic EFT WIMP-nucleon couplings, improving upon previous LUX results and providing constraints on a EFT WIMP interactions using the ${\mathrm{neutron},\mathrm{proton}}$ interaction basis. Additionally, we report exclusion limits on inelastic EFT WIMP-isoscalar recoils that are competitive and world-leading for several interaction operators.

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Abstract

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