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Title: A Global Analysis of Light and Charge Yields in Liquid Xenon

Here, we present an updated model of light and charge yields from nuclear recoils in liquid xenon with a simultaneously constrained parameter set. A global analysis is performed using measurements of electron and photon yields compiled from all available historical data, as well as measurements of the ratio of the two. These data sweep over energies from keV and external applied electric fields from V/cm. The model is constrained by constructing global cost functions and using a simulated annealing algorithm and a Markov Chain Monte Carlo approach to optimize and find confidence intervals on all free parameters in the model. This analysis contrasts with previous work in that we do not unnecessarily exclude datasets nor impose artificially conservative assumptions, do not use spline functions, and reduce the number of parameters used in NEST v 0.98. Here, we report our results and the calculated best-fit charge and light yields. These quantities are crucial to understanding the response of liquid xenon detectors in the energy regime important for rare event searches such as the direct detection of dark matter particles.
Authors:
ORCiD logo [1] ;  [2] ;  [1] ;  [3] ;  [3] ;  [1]
  1. Univ. of California, Davis, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. State Univ. of New York (SUNY), Albany, NY (United States). Dept. of Physics
Publication Date:
Report Number(s):
LLNL-JRNL-664499
Journal ID: ISSN 0018-9499; TRN: US1702211
Grant/Contract Number:
AC52-07NA27344; FG02-91ER40674; NA0000979
Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Nuclear Science
Additional Journal Information:
Journal Volume: 62; Journal Issue: 6; Journal ID: ISSN 0018-9499
Publisher:
IEEE
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Darkmattersearch; energyscale; gamma-rayapparatus; gamma-ray detection; gas scintillation; ionization chambers; liquid rare gases; liquid scintillation; liquid xenon; Markov chain,MonteCarlo,neutrinodetection,particlecalorimetry,radiationdetectors,scintillationcounters,simulation,yieldestimation
OSTI Identifier:
1376002