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Title: Off-diagonal dark-matter phenomenology: Exploring enhanced complementarity relations in nonminimal dark sectors

Abstract

In the majority of multi-component dark-matter scenarios, two classes of processes generically contribute to event rates at experiments capable of probing the nature of the dark sector. The first class consists of "diagonal" processes involving only a single species of dark-matter particle -- processes analogous to those which arise in single-component dark-matter scenarios. By contrast, the second class consists of "off-diagonal" processes involving dark-matter particles of different species. Such processes include inelastic scattering at direct-detection experiments, asymmetric production at colliders, dark-matter co-annihilation, and certain kinds of dark-matter decay. In typical multi-component scenarios, the contributions from diagonal processes dominate over those from off-diagonal processes. Unfortunately, this tends to mask those features which are most sensitive to the multi-component nature of the dark sector. In this paper, by contrast, we point out that there exist natural, multi-component dark-sector scenarios in which the off-diagonal contributions actually dominate over the diagonal. This then gives rise to a new, enhanced picture of dark-matter complementarity. Here, we introduce a scenario in which this situation arises and examine the enhanced picture of dark-matter complementarity which emerges.

Authors:
 [1];  [2];  [3];  [4]
  1. Univ. of Arizona, Tucson, AZ (United States); Univ. of Maryland, College Park, MD (United States)
  2. Univ. of Hawaii, Honolulu, HI (United States)
  3. Lafayette College, Easton, PA (United States)
  4. Univ. of Arizona, Tucson, AZ (United States)
Publication Date:
Research Org.:
Univ. of Hawaii, Honolulu, HI (United States); Univ. of Arizona, Tucson, AZ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation (NSF)
OSTI Identifier:
1598594
Alternate Identifier(s):
OSTI ID: 1413560
Grant/Contract Number:  
SC0010504; SC0009913; FG02-13ER41976; PHY-1250573; PHY-1720430
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 11; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Dienes, Keith R., Kumar, Jason, Thomas, Brooks, and Yaylali, David. Off-diagonal dark-matter phenomenology: Exploring enhanced complementarity relations in nonminimal dark sectors. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.115009.
Dienes, Keith R., Kumar, Jason, Thomas, Brooks, & Yaylali, David. Off-diagonal dark-matter phenomenology: Exploring enhanced complementarity relations in nonminimal dark sectors. United States. doi:10.1103/PhysRevD.96.115009.
Dienes, Keith R., Kumar, Jason, Thomas, Brooks, and Yaylali, David. Fri . "Off-diagonal dark-matter phenomenology: Exploring enhanced complementarity relations in nonminimal dark sectors". United States. doi:10.1103/PhysRevD.96.115009. https://www.osti.gov/servlets/purl/1598594.
@article{osti_1598594,
title = {Off-diagonal dark-matter phenomenology: Exploring enhanced complementarity relations in nonminimal dark sectors},
author = {Dienes, Keith R. and Kumar, Jason and Thomas, Brooks and Yaylali, David},
abstractNote = {In the majority of multi-component dark-matter scenarios, two classes of processes generically contribute to event rates at experiments capable of probing the nature of the dark sector. The first class consists of "diagonal" processes involving only a single species of dark-matter particle -- processes analogous to those which arise in single-component dark-matter scenarios. By contrast, the second class consists of "off-diagonal" processes involving dark-matter particles of different species. Such processes include inelastic scattering at direct-detection experiments, asymmetric production at colliders, dark-matter co-annihilation, and certain kinds of dark-matter decay. In typical multi-component scenarios, the contributions from diagonal processes dominate over those from off-diagonal processes. Unfortunately, this tends to mask those features which are most sensitive to the multi-component nature of the dark sector. In this paper, by contrast, we point out that there exist natural, multi-component dark-sector scenarios in which the off-diagonal contributions actually dominate over the diagonal. This then gives rise to a new, enhanced picture of dark-matter complementarity. Here, we introduce a scenario in which this situation arises and examine the enhanced picture of dark-matter complementarity which emerges.},
doi = {10.1103/PhysRevD.96.115009},
journal = {Physical Review D},
number = 11,
volume = 96,
place = {United States},
year = {2017},
month = {12}
}

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