Constraints on Effective Field Theory Couplings Using 311.2 days of LUX Data

LUX Collaboration

Research output: Contribution to journalArticlepeer-review

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.
Original languageEnglish
Article number062005
Pages (from-to)1-19
Number of pages19
JournalPhysical Review D
Volume104
Issue number6
DOIs
Publication statusPublished - 15 Sep 2021

Keywords

  • astro-ph.CO

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