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Title: Prospects for dark matter detection with inelastic transitions of xenon

Abstract

Dark matter can scatter and excite a nucleus to a low-lying excitation in a direct detection experiment. This signature is distinct from the canonical elastic scattering signal because the inelastic signal also contains the energy deposited from the subsequent prompt de-excitation of the nucleus. A measurement of the elastic and inelastic signal will allow a single experiment to distinguish between a spin-independent and spin-dependent interaction. For the first time, we characterise the inelastic signal for two-phase xenon detectors in which dark matter inelastically scatters off the {sup 129}Xe or {sup 131}Xe isotope. We do this by implementing a realistic simulation of a typical tonne-scale two-phase xenon detector and by carefully estimating the relevant background signals. With our detector simulation, we explore whether the inelastic signal from the axial-vector interaction is detectable with upcoming tonne-scale detectors. We find that two-phase detectors allow for some discrimination between signal and background so that it is possible to detect dark matter that inelastically scatters off either the {sup 129}Xe or {sup 131}Xe isotope for dark matter particles that are heavier than approximately 100 GeV. If, after two years of data, the XENON1T search for elastic scattering nuclei finds no evidence for dark matter, themore » possibility of ever detecting an inelastic signal from the axial-vector interaction will be almost entirely excluded.« less

Authors:
 [1]
  1. GRAPPA Centre for Excellence,Institute for Theoretical Physics Amsterdam (ITFA), University of Amsterdam,Science Park 904 (Netherlands)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572079
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 05; Other Information: PUBLISHER-ID: JCAP05(2016)033; OAI: oai:repo.scoap3.org:15629; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPUTERIZED SIMULATION; DE-EXCITATION; ELASTIC SCATTERING; EXCITATION; GEV RANGE 10-100; INELASTIC SCATTERING; NONLUMINOUS MATTER; PARTICLE IDENTIFICATION; RADIATION DETECTION; XENON 129; XENON 131

Citation Formats

McCabe, Christopher. Prospects for dark matter detection with inelastic transitions of xenon. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/05/033.
McCabe, Christopher. Prospects for dark matter detection with inelastic transitions of xenon. United States. doi:10.1088/1475-7516/2016/05/033.
McCabe, Christopher. Mon . "Prospects for dark matter detection with inelastic transitions of xenon". United States. doi:10.1088/1475-7516/2016/05/033.
@article{osti_22572079,
title = {Prospects for dark matter detection with inelastic transitions of xenon},
author = {McCabe, Christopher},
abstractNote = {Dark matter can scatter and excite a nucleus to a low-lying excitation in a direct detection experiment. This signature is distinct from the canonical elastic scattering signal because the inelastic signal also contains the energy deposited from the subsequent prompt de-excitation of the nucleus. A measurement of the elastic and inelastic signal will allow a single experiment to distinguish between a spin-independent and spin-dependent interaction. For the first time, we characterise the inelastic signal for two-phase xenon detectors in which dark matter inelastically scatters off the {sup 129}Xe or {sup 131}Xe isotope. We do this by implementing a realistic simulation of a typical tonne-scale two-phase xenon detector and by carefully estimating the relevant background signals. With our detector simulation, we explore whether the inelastic signal from the axial-vector interaction is detectable with upcoming tonne-scale detectors. We find that two-phase detectors allow for some discrimination between signal and background so that it is possible to detect dark matter that inelastically scatters off either the {sup 129}Xe or {sup 131}Xe isotope for dark matter particles that are heavier than approximately 100 GeV. If, after two years of data, the XENON1T search for elastic scattering nuclei finds no evidence for dark matter, the possibility of ever detecting an inelastic signal from the axial-vector interaction will be almost entirely excluded.},
doi = {10.1088/1475-7516/2016/05/033},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 05,
volume = 2016,
place = {United States},
year = {Mon May 16 00:00:00 EDT 2016},
month = {Mon May 16 00:00:00 EDT 2016}
}