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Kinetic decoupling of neutralino dark matter

Chen, Xuelei and Kamionkowski, Marc and Zhang, Xinmin (2001) Kinetic decoupling of neutralino dark matter. Physical Review D, 64 (2). Art. No. 021302(R). ISSN 2470-0010. https://resolver.caltech.edu/CaltechAUTHORS:CHEprd01

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Abstract

After neutralinos cease annihilating in the early Universe, they may still scatter elastically from other particles in the primordial plasma. At some point in time, however, they will eventually stop scattering. We calculate the cross sections for neutralino elastic scattering from standard-model particles to determine the time at which this kinetic decoupling occurs. We show that kinetic decoupling occurs above a temperature T∼MeV. Thereafter, neutralinos act as collisionless cold dark matter.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/PhysRevD.64.021302DOIUNSPECIFIED
ORCID:
AuthorORCID
Kamionkowski, Marc0000-0001-7018-2055
Additional Information:© 2001 The American Physical Society. Received 27 March 2001; published 25 June 2001. X.C. acknowledges the hospitality of the TAPIR group at Caltech where part of this work was completed. X.C. was supported in part by the U.S. Department of Energy under grant No. DE-FG02-91ER40690. M.K. was supported by the DOE under DE-FG03-92-ER40701, the NSF under AST-0096023, and NASA under NAG5-8506. X.Z. was supported in part by the National Natural Science Foundation of China and the Ministry of Science and Technology of China under grant No. NKBRSF G19990754.
Group:TAPIR
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-FG02-91ER40690
NSFAST-0096023
NASANAG5-8506
National Natural Science Foundation of ChinaUNSPECIFIED
Ministry of Science and Technology (China)NKBRSF G19990754
Subject Keywords:2 PHOTONS; GAMMA-RAYS; ANNIHILATION; MODEL
Issue or Number:2
Record Number:CaltechAUTHORS:CHEprd01
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:CHEprd01
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5766
Collection:CaltechAUTHORS
Deposited By: Lindsay Cleary
Deposited On:01 Nov 2006
Last Modified:02 Oct 2019 23:26

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