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Title: Requirements to detect the monoenergetic photon signature of thermal cold dark matter in PeV-scale split supersymmetry

Abstract

Split supersymmetry scenarios with PeV-scale scalar masses circumvent many of the restrictions on supersymmetry coming from experimental limits on CP violation, flavor-changing neutral currents, and the Higgs boson mass. We consider the situation where the lightest supersymmetric particle is either a W-ino or Higgsino and the majority of its cold dark-matter relic density is of thermal origin, in which case its mass is specified to be 2.3 TeV for a W-ino or 1.1 TeV for a Higgsino. We examine the potential for indirect detection, at present and future {gamma}-ray telescopes, of the monoenergetic photon lines that would result from the annihilation of these particles near the galactic center. We show how the possibility for detection depends on the precise form of the galactic dark-matter halo profile and examine what performance attributes a {gamma}-ray detector would need in order to register a 5{sigma} discovery.

Authors:
 [1]
  1. Michigan Center for Theoretical Physics (MCTP) Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
Publication Date:
OSTI Identifier:
20711122
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 72; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevD.72.023519; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANNIHILATION; CP INVARIANCE; FLAVOR MODEL; GAMMA RADIATION; HIGGS BOSONS; INTERMEDIATE BOSONS; NEUTRAL CURRENTS; NONLUMINOUS MATTER; PARTICLE IDENTIFICATION; PEV RANGE; PHOTONS; REST MASS; SPARTICLES; SUPERSYMMETRY; TEV RANGE

Citation Formats

Thomas, Brooks. Requirements to detect the monoenergetic photon signature of thermal cold dark matter in PeV-scale split supersymmetry. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.023519.
Thomas, Brooks. Requirements to detect the monoenergetic photon signature of thermal cold dark matter in PeV-scale split supersymmetry. United States. https://doi.org/10.1103/PhysRevD.72.023519
Thomas, Brooks. Fri . "Requirements to detect the monoenergetic photon signature of thermal cold dark matter in PeV-scale split supersymmetry". United States. https://doi.org/10.1103/PhysRevD.72.023519.
@article{osti_20711122,
title = {Requirements to detect the monoenergetic photon signature of thermal cold dark matter in PeV-scale split supersymmetry},
author = {Thomas, Brooks},
abstractNote = {Split supersymmetry scenarios with PeV-scale scalar masses circumvent many of the restrictions on supersymmetry coming from experimental limits on CP violation, flavor-changing neutral currents, and the Higgs boson mass. We consider the situation where the lightest supersymmetric particle is either a W-ino or Higgsino and the majority of its cold dark-matter relic density is of thermal origin, in which case its mass is specified to be 2.3 TeV for a W-ino or 1.1 TeV for a Higgsino. We examine the potential for indirect detection, at present and future {gamma}-ray telescopes, of the monoenergetic photon lines that would result from the annihilation of these particles near the galactic center. We show how the possibility for detection depends on the precise form of the galactic dark-matter halo profile and examine what performance attributes a {gamma}-ray detector would need in order to register a 5{sigma} discovery.},
doi = {10.1103/PhysRevD.72.023519},
url = {https://www.osti.gov/biblio/20711122}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 2,
volume = 72,
place = {United States},
year = {2005},
month = {7}
}