Constraints on Effective Field Theory Couplings Using 311.2 days of LUX
  Data
  We report here the results of an 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 $\sim$180 keV$_{nr}$,
requiring a reassessment of data quality cuts and background models. In order
to use a binned Profile Likelihood statistical framework, the development of
new analysis techniques to account for higher-energy backgrounds was required.
With a 3.14$\times10^4$ kg$\cdot$day exposure using data collected between 2014
and 2016, we set 90\% C.L. exclusion limits on non-relativistic EFT WIMP
couplings to neutrons and protons, providing the most stringent constraints on
a significant fraction of the possible EFT WIMP interactions. Additionally, we
report world-leading exclusion limits on inelastic EFT WIMP-nucleon recoils.
