Center-of-mass recoil effects on the annihilation and formation of dark matter bound pairs
| Autor: | Biondini, Simone, Brambilla, Nora, Qerimi, Gramos, Vairo, Antonio |
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| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Proceedings of Science (PoS) 2024 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.22323/1.449.0112 |
| Popis: | For a quantitative investigation on the time evolution of heavy thermal dark matter at and after thermal freeze-out, near-threshold processes need to be taken into account which have a large impact on the observed dark matter relic abundance. In this conference paper, we study the recoil effect of heavy dark matter pairs in a thermal bath and compute the annihilation cross section and the decay width as well as the bound-state formation cross section of dark matter fermion-antifermion pairs in the laboratory frame within the framework of potential non-relativistic effective field theories at finite temperature. For the considered hierarchy of energy scales, we highlight the effect of the recoil corrections to the thermal rates. Comment: 7 pages, 1 figure; Talk given at EPS-HEP2023 and TAUP2023 |
| Databáze: | arXiv |
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