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First results from the DarkSide-50 dark matter experiment at Laboratori Nazionali del Gran Sasso
Journal article   Open access   Peer reviewed

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

P. Agnes, T. Alexander, A. Alton, K. Arisaka, H.O. Back, B. Baldin, K. Biery, G. Bonfini, M. Bossa, A. Brigatti, …
Physics letters. B, v 743(C), pp 456-466
01 Apr 2015
url
https://doi.org/10.1016/j.physletb.2015.03.012View
Published, Version of Record (VoR) Open

Abstract

Dark matter Liquid scintillators Low-background detectors Noble liquid detectors WIMP
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) kgd exposure with an atmospheric argon fill. 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.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Astronomy & Astrophysics
Physics, Nuclear
Physics, Particles & Fields
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