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Title: Directional detection of dark matter with two-dimensional targets

Abstract

We propose two-dimensional materials as targets for direct detection of dark matter. Using graphene as an example, we focus on the case where dark matter scattering deposits sufficient energy on a valence-band electron to eject it from the target. Here, we show that the sensitivity of graphene to dark matter of MeV to GeV mass can be comparable, for similar exposure and background levels, to that of semiconductor targets such as silicon and germanium. Moreover, a two-dimensional target is an excellent directional detector, as the ejected electron retains information about the angular dependence of the incident dark matter particle. Our proposal can be implemented by the PTOLEMY experiment, presenting for the first time an opportunity for directional detection of sub-GeV dark matter.

Authors:
 [1]; ORCiD logo [2];  [2];  [2];  [3]
  1. Cornell Univ., Ithaca, NY (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Dept. of Physics; Hebrew Univ. of Jerusalem (Israel). Racah Inst. of Physics
  2. Princeton Univ., NJ (United States). Dept. of Physics
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States). Dept. of Physics
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF)
OSTI Identifier:
1365594
Alternate Identifier(s):
OSTI ID: 1417615
Grant/Contract Number:  
AC02-05CH11231; PHY-1002399; PHY-1419008; DESC0007968
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 772; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; dark matter; direct detection; directional detection

Citation Formats

Hochberg, Yonit, Kahn, Yonatan, Lisanti, Mariangela, Tully, Christopher G., and Zurek, Kathryn M. Directional detection of dark matter with two-dimensional targets. United States: N. p., 2017. Web. doi:10.1016/j.physletb.2017.06.051.
Hochberg, Yonit, Kahn, Yonatan, Lisanti, Mariangela, Tully, Christopher G., & Zurek, Kathryn M. Directional detection of dark matter with two-dimensional targets. United States. doi:10.1016/j.physletb.2017.06.051.
Hochberg, Yonit, Kahn, Yonatan, Lisanti, Mariangela, Tully, Christopher G., and Zurek, Kathryn M. Fri . "Directional detection of dark matter with two-dimensional targets". United States. doi:10.1016/j.physletb.2017.06.051.
@article{osti_1365594,
title = {Directional detection of dark matter with two-dimensional targets},
author = {Hochberg, Yonit and Kahn, Yonatan and Lisanti, Mariangela and Tully, Christopher G. and Zurek, Kathryn M.},
abstractNote = {We propose two-dimensional materials as targets for direct detection of dark matter. Using graphene as an example, we focus on the case where dark matter scattering deposits sufficient energy on a valence-band electron to eject it from the target. Here, we show that the sensitivity of graphene to dark matter of MeV to GeV mass can be comparable, for similar exposure and background levels, to that of semiconductor targets such as silicon and germanium. Moreover, a two-dimensional target is an excellent directional detector, as the ejected electron retains information about the angular dependence of the incident dark matter particle. Our proposal can be implemented by the PTOLEMY experiment, presenting for the first time an opportunity for directional detection of sub-GeV dark matter.},
doi = {10.1016/j.physletb.2017.06.051},
journal = {Physics Letters. Section B},
number = C,
volume = 772,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 2017},
month = {Fri Sep 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.physletb.2017.06.051

Citation Metrics:
Cited by: 16 works
Citation information provided by
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