Abstract
Thermal production of light dark matter with sub-GeV scale mass can be attributed to 3 → 2 self-annihilation processes. We consider the thermal average for annihilation cross sections of dark matter at 3 → 2 and general higher-order interactions. A correct thermal average for initial dark matter particles is important, in particular, for annihilation cross sections with overall velocity dependence and/or resonance poles. We apply our general results to benchmark models for SIMP dark matter and discuss the effects of the resonance pole in determining the relic density.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Y. Hochberg, E. Kuflik, T. Volansky and J.G. Wacker, Mechanism for thermal relic dark matter of strongly interacting massive particles, Phys. Rev. Lett. 113 (2014) 171301 [arXiv:1402.5143] [INSPIRE].
Y. Hochberg, E. Kuflik, H. Murayama, T. Volansky and J.G. Wacker, Model for thermal relic dark matter of strongly interacting massive particles, Phys. Rev. Lett. 115 (2015) 021301 [arXiv:1411.3727] [INSPIRE].
N. Bernal, C. Garcia-Cely and R. Rosenfeld, WIMP and SIMP dark matter from the spontaneous breaking of a global group, JCAP 04 (2015) 012 [arXiv:1501.01973] [INSPIRE].
H.M. Lee and M.-S. Seo, Communication with SIMP dark mesons via Z ′ -portal, Phys. Lett. B 748 (2015) 316 [arXiv:1504.00745] [INSPIRE].
S.-M. Choi and H.M. Lee, SIMP dark matter with gauged Z 3 symmetry, JHEP 09 (2015) 063 [arXiv:1505.00960] [INSPIRE].
N. Bernal, X. Chu, C. Garcia-Cely, T. Hambye and B. Zaldivar, Production regimes for self-interacting dark matter, JCAP 03 (2016) 018 [arXiv:1510.08063] [INSPIRE].
S.M. Choi et al., Vector SIMP dark matter, to appear.
S.-M. Choi and H.M. Lee, Resonant SIMP dark matter, Phys. Lett. B 758 (2016) 47 [arXiv:1601.03566] [INSPIRE].
S.-M. Choi, Y.-J. Kang and H.M. Lee, On thermal production of self-interacting dark matter, JHEP 12 (2016) 099 [arXiv:1610.04748] [INSPIRE].
P. Gondolo and G. Gelmini, Cosmic abundances of stable particles: improved analysis, Nucl. Phys. B 360 (1991) 145 [INSPIRE].
K. Griest and D. Seckel, Three exceptions in the calculation of relic abundances, Phys. Rev. D 43 (1991) 3191 [INSPIRE].
J. Wess and B. Zumino, Consequences of anomalous Ward identities, Phys. Lett. 37B (1971) 95 [INSPIRE].
E. Witten, Global aspects of current algebra, Nucl. Phys. B 223 (1983) 422 [INSPIRE].
Y. Hochberg, E. Kuflik and H. Murayama, SIMP spectroscopy, JHEP 05 (2016) 090 [arXiv:1512.07917] [INSPIRE].
U.K. Dey, T.N. Maity and T.S. Ray, Light dark matter through assisted annihilation, JCAP 03 (2017) 045 [arXiv:1612.09074] [INSPIRE].
J. Cline, H. Liu, T. Slatyer and W. Xue, Enabling forbidden dark matter, arXiv:1702.07716 [INSPIRE].
N. Bernal and X. Chu, Z 2 SIMP dark matter, JCAP 01 (2016) 006 [arXiv:1510.08527] [INSPIRE].
N. Bernal, X. Chu and J. Pradler, Simply split SIMPs, arXiv:1702.04906 [INSPIRE].
Open Access
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1702.07860
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
About this article
Cite this article
Choi, SM., Lee, H.M. & Seo, MS. Cosmic abundances of SIMP dark matter. J. High Energ. Phys. 2017, 154 (2017). https://doi.org/10.1007/JHEP04(2017)154
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP04(2017)154