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Neutralino cold dark matter in a one-parameter extension of the minimal supergravity model

Neutralino cold dark matter in a one-parameter extension of the minimal supergravity model
Neutralino cold dark matter in a one-parameter extension of the minimal supergravity model
Within the minimal supergravity model (mSUGRA) framework, the expectation for the relic density of neutralinos exceeds the WMAP determination, unless neutralinos (a) have a significant Higgsino component, (b) have a mass close to half that of a heavy Higgs boson, or (c) can efficiently coannihilate with a charged or colored particle. Within a one-parameter extension of the mSUGRA model which includes nonuniversal Higgs masses, we show that agreement with the WMAP data can be obtained over a wide range of mSUGRA parameters for scenarios (a) and (b), so that the phenomenological implications may be much more diverse than in mSUGRA. We show that direct and/or indirect detection of neutralino dark matter should be possible at various current and planned facilities.

2470-0029
95008
Baer, Howard
193c3082-95fb-469b-9548-e972a10e9341
Mustafayev, Azar
54f285e4-87a1-4f4e-88e4-69c1d6716991
Profumo, Stefano
50946e0d-730c-477f-a5a1-1688539830e3
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Tata, Xerxes
95e56bc4-6104-4eaa-960b-b2ba6443397f
Baer, Howard
193c3082-95fb-469b-9548-e972a10e9341
Mustafayev, Azar
54f285e4-87a1-4f4e-88e4-69c1d6716991
Profumo, Stefano
50946e0d-730c-477f-a5a1-1688539830e3
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Tata, Xerxes
95e56bc4-6104-4eaa-960b-b2ba6443397f

Baer, Howard, Mustafayev, Azar, Profumo, Stefano, Belyaev, Alexander and Tata, Xerxes (2005) Neutralino cold dark matter in a one-parameter extension of the minimal supergravity model. Physical Review D, 71 (9), 95008. (doi:10.1103/PhysRevD.71.095008).

Record type: Article

Abstract

Within the minimal supergravity model (mSUGRA) framework, the expectation for the relic density of neutralinos exceeds the WMAP determination, unless neutralinos (a) have a significant Higgsino component, (b) have a mass close to half that of a heavy Higgs boson, or (c) can efficiently coannihilate with a charged or colored particle. Within a one-parameter extension of the mSUGRA model which includes nonuniversal Higgs masses, we show that agreement with the WMAP data can be obtained over a wide range of mSUGRA parameters for scenarios (a) and (b), so that the phenomenological implications may be much more diverse than in mSUGRA. We show that direct and/or indirect detection of neutralino dark matter should be possible at various current and planned facilities.

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Published date: 2005

Identifiers

Local EPrints ID: 141742
URI: http://eprints.soton.ac.uk/id/eprint/141742
ISSN: 2470-0029
PURE UUID: 7d1f8dd1-30e3-4db0-9357-c8bd8e2ecab2
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 28 Jun 2010 14:32
Last modified: 10 Dec 2019 01:42

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Contributors

Author: Howard Baer
Author: Azar Mustafayev
Author: Stefano Profumo
Author: Xerxes Tata

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