BibTex format
@article{Akerib:2021:10.1103/PhysRevD.104.012011,
author = {Akerib, DS and Alsum, S and Araujo, HM and Bai, X and Balajthy, J and Bang, J and Baxter, A and Bernard, EP and Bernstein, A and Biesiadzinski, TP and Boulton, EM and Boxer, B and Bras, P and Burdin, S and Byram, D and Carmona-Benitez, MC and Chan, C and Cutter, JE and de, Viveiros L and Druszkiewicz, E and Fan, A and Fiorucci, S and Gaitskell, RJ and Ghag, C and Gilchriese, MGD and Gwilliam, C and Hall, CR and Haselschwardt, SJ and Hertel, SA and Hogan, DP and Horn, M and Huang, DQ and Ignarra, CM and Jacobsen, RG and Jahangir, O and Ji, W and Kamdin, K and Kazkaz, K and Khaitan, D and Korolkova, E and Kravitz, S and Kudryavtsev, VA and Leason, E and Lenardo, BG and Lesko, KT and Liao, J and Lin, J and Lindote, A and Lopes, M and Manalaysay, A and Mannino, RL and Marangou, N and McKinsey, DN and Mei, D-M and Morad, JA and Murphy, ASJ and Naylor, A and Nehrkorn, C and Nelson, HN and Neves, F and Nilima, A and Oliver-Mallory, KC and Palladino, KJ and Rhyne, C and Riffard, Q and Rischbie},
doi = {10.1103/PhysRevD.104.012011},
journal = {Physical Review D: Particles, Fields, Gravitation and Cosmology},
pages = {1--15},
title = {Improving sensitivity to low-mass dark matter in LUX using a novel electrode background mitigation technique},
url = {http://dx.doi.org/10.1103/PhysRevD.104.012011},
volume = {104},
year = {2021}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - This paper presents a novel technique for mitigating electrode backgrounds that limit the sensitivity of searches for low-mass dark matter (DM) using xenon time projection chambers. In the Large Underground Xenon (LUX) detector, signatures of low-mass DM interactions would be very low-energy (∼keV) scatters in the active target that ionize only a few xenon atoms and seldom produce detectable scintillation signals. In this regime, extra precaution is required to reject a complex set of low-energy electron backgrounds that have long been observed in this class of detector. Noticing backgrounds from the wire grid electrodes near the top and bottom of the active target are particularly pernicious, we develop a machine learning technique based on ionization pulse shape to identify and reject these events. We demonstrate the technique can improve Poisson limits on low-mass DM interactions by a factor of 1.7–3 with improvement depending heavily on the size of ionization signals. We use the technique on events in an effective 5 tonne·day exposure from LUX’s 2013 science operation to place strong limits on low-mass DM particles with masses in the range mχ∈0.15–10 GeV. This machine learning technique is expected to be useful for near-future experiments, such as LUX-ZEPLIN and XENONnT, which hope to perform low-mass DM searches with the stringent background control necessary to make a discovery.
AU - Akerib,DS
AU - Alsum,S
AU - Araujo,HM
AU - Bai,X
AU - Balajthy,J
AU - Bang,J
AU - Baxter,A
AU - Bernard,EP
AU - Bernstein,A
AU - Biesiadzinski,TP
AU - Boulton,EM
AU - Boxer,B
AU - Bras,P
AU - Burdin,S
AU - Byram,D
AU - Carmona-Benitez,MC
AU - Chan,C
AU - Cutter,JE
AU - de,Viveiros L
AU - Druszkiewicz,E
AU - Fan,A
AU - Fiorucci,S
AU - Gaitskell,RJ
AU - Ghag,C
AU - Gilchriese,MGD
AU - Gwilliam,C
AU - Hall,CR
AU - Haselschwardt,SJ
AU - Hertel,SA
AU - Hogan,DP
AU - Horn,M
AU - Huang,DQ
AU - Ignarra,CM
AU - Jacobsen,RG
AU - Jahangir,O
AU - Ji,W
AU - Kamdin,K
AU - Kazkaz,K
AU - Khaitan,D
AU - Korolkova,E
AU - Kravitz,S
AU - Kudryavtsev,VA
AU - Leason,E
AU - Lenardo,BG
AU - Lesko,KT
AU - Liao,J
AU - Lin,J
AU - Lindote,A
AU - Lopes,M
AU - Manalaysay,A
AU - Mannino,RL
AU - Marangou,N
AU - McKinsey,DN
AU - Mei,D-M
AU - Morad,JA
AU - Murphy,ASJ
AU - Naylor,A
AU - Nehrkorn,C
AU - Nelson,HN
AU - Neves,F
AU - Nilima,A
AU - Oliver-Mallory,KC
AU - Palladino,KJ
AU - Rhyne,C
AU - Riffard,Q
AU - Rischbieter,GRC
AU - Rossiter,P
AU - Shaw,S
AU - Shutt,TA
AU - Silva,C
AU - Solmaz,M
AU - Solovov,VN
AU - Sorensen,P
AU - Sumner,TJ
AU - Swanson,N
AU - Szydagis,M
AU - Taylor,DJ
AU - Taylor,R
AU - Taylor,WC
AU - Tennyson,BP
AU - Terman,PA
AU - Tiedt,DR
AU - To,WH
AU - Tvrznikova,L
AU - Utku,U
AU - Vacheret,A
AU - Vaitkus,A
AU - Velan,V
AU - Webb,RC
AU - White,JT
AU - Whitis,TJ
AU - Witherell,MS
AU - Wolfs,FLH
AU - Woodward,D
AU - Xiang,X
AU - Xu,J
AU - Zhang,C
DO - 10.1103/PhysRevD.104.012011
EP - 15
PY - 2021///
SN - 1550-2368
SP - 1
TI - Improving sensitivity to low-mass dark matter in LUX using a novel electrode background mitigation technique
T2 - Physical Review D: Particles, Fields, Gravitation and Cosmology
UR - http://dx.doi.org/10.1103/PhysRevD.104.012011
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000674573200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - https://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.012011
UR - http://hdl.handle.net/10044/1/94094
VL - 104
ER -