The number density of a charged relic

被引:53
作者
Berger, Carola F. [1 ,2 ]
Covi, Laura [3 ]
Kraml, Sabine [4 ]
Palorini, Federica [5 ]
机构
[1] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
[2] Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA
[3] DESY Theory Grp, D-22603 Hamburg, Germany
[4] UJF Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol, F-38026 Grenoble, France
[5] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France
基金
美国国家科学基金会;
关键词
dark matter; big bang nucleosynthesis; physics of the early universe;
D O I
10.1088/1475-7516/2008/10/005
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate scenarios in which a charged, long-lived scalar particle decouples from the primordial plasma in the early Universe. We compute the number density at the time of freeze-out considering both the cases of Abelian and non-Abelian interactions and including the effect of Sommerfeld enhancement at low initial velocity. We also discuss as an extreme case the maximal cross section that fulfils the unitarity bound. We then compare these number densities to the exotic nuclei searches for stable relics and to the BBN bounds on unstable relics and draw conclusions for the cases of a stau or stop NLSP in supersymmetric models with a gravitino or axino LSP.
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页数:44
相关论文
共 96 条
[1]   Direct detection of warm dark matter in the X-ray [J].
Abazajian, K ;
Fuller, GM ;
Tucker, WH .
ASTROPHYSICAL JOURNAL, 2001, 562 (02) :593-604
[2]  
[Anonymous], 2006, J PHYS G
[3]   Limits on split supersymmetry from gluino cosmology [J].
Arvanitaki, A ;
Davis, C ;
Graham, PW ;
Pierce, A ;
Wacker, JG .
PHYSICAL REVIEW D, 2005, 72 (07)
[4]   Cosmological gravitino problem in gauge-mediated supersymmetry breaking models [J].
Asaka, T ;
Hamaguchi, K ;
Suzuki, K .
PHYSICS LETTERS B, 2000, 490 (1-2) :136-146
[5]   Heavy gluino as the lightest supersymmetric particle [J].
Baer, H ;
Cheung, K ;
Gunion, JF .
PHYSICAL REVIEW D, 1999, 59 (07)
[6]  
BAER H, 2008, ARXIV08030510HEPPH
[7]   Full one-loop corrections to the relic density in the MSSM: A few examples [J].
Baro, N. ;
Boudjema, F. ;
Semenov, A. .
PHYSICS LETTERS B, 2008, 660 (05) :550-560
[8]   Squark and gluino production at hadron colliders [J].
Beenakker, W ;
Hopker, R ;
Spira, M ;
Zerwas, PM .
NUCLEAR PHYSICS B, 1997, 492 (1-2) :51-103
[9]   micrOMEGAs 2.0:: A program to calculate the relic density of dark matter in a generic model [J].
Belanger, G. ;
Boudjema, F. ;
Pukhov, A. ;
Semenov, A. .
COMPUTER PHYSICS COMMUNICATIONS, 2007, 176 (05) :367-382
[10]   micrOMEGAs:: Version 1.3 [J].
Bélanger, G ;
Boudjema, F ;
Pukhov, A ;
Semenov, A .
COMPUTER PHYSICS COMMUNICATIONS, 2006, 174 (07) :577-604