Center-of-mass recoil effects on the annihilation and formation of dark matter bound pairs

S. Biondini, N. Brambilla, G. Qerimi, A. Vairo

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish
Article number037
JournalProceedings of Science
StatePublished - 22 Mar 2024
Event18th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2023 - Vienna, Austria
Duration: 28 Aug 20231 Sep 2023


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