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Title: Dark matter sensitivity of multi-ton liquid xenon detectors

Abstract

We study the sensitivity of multi ton-scale time projection chambers using a liquid xenon target, e.g., the proposed DARWIN instrument, to spin-independent and spin-dependent WIMP-nucleon scattering interactions. Taking into account realistic backgrounds from the detector itself as well as from neutrinos, we examine the impact of exposure, energy threshold, background rejection efficiency and energy resolution on the dark matter sensitivity. With an exposure of 200 t × y and assuming detector parameters which have been already demonstrated experimentally, spin-independent cross sections as low as 2.5 × 10{sup −49} cm{sup 2} can be probed for WIMP masses around 40 GeV/c{sup 2}. Additional improvements in terms of background rejection and exposure will further increase the sensitivity, while the ultimate WIMP science reach will be limited by neutrinos scattering coherently off the xenon nuclei.

Authors:
;  [1]; ;  [2];  [3]
  1. Albert Einstein Center for Fundamental Physics, Universität Bern, Sidlerstrasse 5, 3012 Bern (Switzerland)
  2. Physik-Institut, Universität Zürich, Winterthurerstrasse 190, 8057 Zürich (Switzerland)
  3. INFN—Sezione di Bologna, Via Irnerio 46, 40126 Bologna (Italy)
Publication Date:
OSTI Identifier:
22525283
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2015; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CROSS SECTIONS; EFFICIENCY; ENERGY RESOLUTION; EXPERIMENT PLANNING; GEV RANGE; LIQUID SCINTILLATION DETECTORS; NEUTRINO REACTIONS; NEUTRINOS; NONLUMINOUS MATTER; NUCLEONS; PARTICLE INTERACTIONS; PROBES; REST MASS; SENSITIVITY; SPIN; TIME PROJECTION CHAMBERS; XENON

Citation Formats

Schumann, Marc, Bütikofer, Lukas, Baudis, Laura, Kish, Alexander, and Selvi, Marco, E-mail: marc.schumann@lhep.unibe.ch, E-mail: lbaudis@physik.uzh.ch, E-mail: lukas.buetikofer@lhep.unibe.ch, E-mail: alexkish@physik.uzh.ch, E-mail: marco.selvi@bo.infn.it. Dark matter sensitivity of multi-ton liquid xenon detectors. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/10/016.
Schumann, Marc, Bütikofer, Lukas, Baudis, Laura, Kish, Alexander, & Selvi, Marco, E-mail: marc.schumann@lhep.unibe.ch, E-mail: lbaudis@physik.uzh.ch, E-mail: lukas.buetikofer@lhep.unibe.ch, E-mail: alexkish@physik.uzh.ch, E-mail: marco.selvi@bo.infn.it. Dark matter sensitivity of multi-ton liquid xenon detectors. United States. doi:10.1088/1475-7516/2015/10/016.
Schumann, Marc, Bütikofer, Lukas, Baudis, Laura, Kish, Alexander, and Selvi, Marco, E-mail: marc.schumann@lhep.unibe.ch, E-mail: lbaudis@physik.uzh.ch, E-mail: lukas.buetikofer@lhep.unibe.ch, E-mail: alexkish@physik.uzh.ch, E-mail: marco.selvi@bo.infn.it. Thu . "Dark matter sensitivity of multi-ton liquid xenon detectors". United States. doi:10.1088/1475-7516/2015/10/016.
@article{osti_22525283,
title = {Dark matter sensitivity of multi-ton liquid xenon detectors},
author = {Schumann, Marc and Bütikofer, Lukas and Baudis, Laura and Kish, Alexander and Selvi, Marco, E-mail: marc.schumann@lhep.unibe.ch, E-mail: lbaudis@physik.uzh.ch, E-mail: lukas.buetikofer@lhep.unibe.ch, E-mail: alexkish@physik.uzh.ch, E-mail: marco.selvi@bo.infn.it},
abstractNote = {We study the sensitivity of multi ton-scale time projection chambers using a liquid xenon target, e.g., the proposed DARWIN instrument, to spin-independent and spin-dependent WIMP-nucleon scattering interactions. Taking into account realistic backgrounds from the detector itself as well as from neutrinos, we examine the impact of exposure, energy threshold, background rejection efficiency and energy resolution on the dark matter sensitivity. With an exposure of 200 t × y and assuming detector parameters which have been already demonstrated experimentally, spin-independent cross sections as low as 2.5 × 10{sup −49} cm{sup 2} can be probed for WIMP masses around 40 GeV/c{sup 2}. Additional improvements in terms of background rejection and exposure will further increase the sensitivity, while the ultimate WIMP science reach will be limited by neutrinos scattering coherently off the xenon nuclei.},
doi = {10.1088/1475-7516/2015/10/016},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 10,
volume = 2015,
place = {United States},
year = {2015},
month = {10}
}