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Title: First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso

Abstract

We report the first results of DarkSide-50, a direct search for dark matter operating in the underground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The dark matter detector is a Liquid Argon Time Projection Chamber with a (46.4 ± 0.7) kg active mass, operated inside a 30 t organic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a (1422 ± 67) kg d exposure with an atmospheric argon fill. As a result, this is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1×10 -44 cm 2 for a WIMP mass of 100 Gev/c 2.

Authors:
 [1]
  1. Univ. Paris Diderot, Paris, (France). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
DarkSide Collaboration
OSTI Identifier:
1228403
Alternate Identifier(s):
OSTI ID: 1226295; OSTI ID: 1307520; OSTI ID: 1378518
Report Number(s):
FERMILAB-PUB-14-389-AE-E; LLNL-JRNL-737374
Journal ID: ISSN 0370-2693; arXiv eprint number arXiv:1410.0653; TRN: US1600991
Grant/Contract Number:
AC02-07CH11359; FG02-91ER40671; PHY-0919363; PHY-1004072; PHY-1211308; UMO-2012/05/E/ST2/02333; PHY-1125897; AC52-07NA27344
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 743; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; dark matter; WIMP; noble liquid detectors; low-background detectors; liquid scintillators; 47 OTHER INSTRUMENTATION; 79 ASTRONOMY AND ASTROPHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Agnes, P. First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso. United States: N. p., 2015. Web. doi:10.1016/j.physletb.2015.03.012.
Agnes, P. First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso. United States. doi:10.1016/j.physletb.2015.03.012.
Agnes, P. Wed . "First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso". United States. doi:10.1016/j.physletb.2015.03.012.
@article{osti_1228403,
title = {First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso},
author = {Agnes, P.},
abstractNote = {We report the first results of DarkSide-50, a direct search for dark matter operating in the underground Laboratori Nazionali del Gran Sasso (LNGS) and searching for the rare nuclear recoils possibly induced by weakly interacting massive particles (WIMPs). The dark matter detector is a Liquid Argon Time Projection Chamber with a (46.4 ± 0.7) kg active mass, operated inside a 30 t organic liquid scintillator neutron veto, which is in turn installed at the center of a 1 kt water Cherenkov veto for the residual flux of cosmic rays. We report here the null results of a dark matter search for a (1422 ± 67) kg d exposure with an atmospheric argon fill. As a result, this is the most sensitive dark matter search performed with an argon target, corresponding to a 90% CL upper limit on the WIMP-nucleon spin-independent cross section of 6.1×10-44 cm2 for a WIMP mass of 100 Gev/c2.},
doi = {10.1016/j.physletb.2015.03.012},
journal = {Physics Letters. Section B},
number = ,
volume = 743,
place = {United States},
year = {Wed Mar 11 00:00:00 EDT 2015},
month = {Wed Mar 11 00:00:00 EDT 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.physletb.2015.03.012

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Cited by: 77 works
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