Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Physics |
Creator |
Gondolo, Paolo |
Other Author |
Gelmini, Graciela; Soldatenko, Adrian; Yaguna, Carlos E. |
Title |
Effect of a late decaying scalar on the neutralino relic density |
Date |
2006-10 |
Description |
If the energy density of the Universe before nucleosynthesis is dominated by a scalar field Ø that decays and reheats the plasma to a temperature TRH smaller than the standard neutralino freeze-out temperature, the neutralino relic density differs from its standard value. In this case, the relic density depends on two additional parameters: TRH, and the number of neutralinos produced per Ø decay per unit mass of the Ø field. In this paper, we numerically study the neutralino relic density as a function of these reheating parameters within minimal supersymmetric standard models and show that the dark matter constraint can almost always be satisfied. |
Type |
Text |
Publisher |
American Physical Society |
Journal Title |
Physical Review D |
Volume |
74 |
Issue |
8 |
DOI |
10.1103/PhysRevD.74.083514 |
citatation_issn |
1550-7998 |
Subject |
Neutralinos; Relic density; Reheating temperature |
Subject LCSH |
Dark matter (Astronomy); Particles (Nuclear physics); Cosmology |
Language |
eng |
Bibliographic Citation |
Gelmini, G., Gondolo, P., Soldatenko, A., & Yaguna, C. E. (2006). Effect of a late decaying scalar on the neutralino relic density. Physical Review D, 74, 083514. |
Rights Management |
(c) American Physical Society http://dx.doi.org/10.1103/PhysRevD.74.083514 |
Format Medium |
application/pdf |
Format Extent |
2,035,609 bytes |
Identifier |
ir-main,9194 |
ARK |
ark:/87278/s6d22g2c |
Setname |
ir_uspace |
ID |
705159 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6d22g2c |