Akerib, DS; Alsum, S; Araújo, HM; Bai, X; Balajthy, J; Bang, J; Baxter, A; ... Zhang, C; + view all 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; 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; Morad, JA; Murphy, ASJ; 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; - view fewer (2021) Constraints on effective field theory couplings using 311.2 days of LUX data. Physical Review D , 104 (6) , Article 062005. 10.1103/PhysRevD.104.062005.

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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 ∼180 keVnr, 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 3.14×104 kg·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 {neutron,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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