Center-of-mass recoil effects on the annihilation and formation of dark matter bound pairs
arXiv:2402.14199 · doi:10.22323/1.449.0112
Abstract
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.
arXiv comment7 pages, 1 figure; Talk given at EPS-HEP2023 and TAUP2023
References in corpus (9)
- Planck 2018 results. I. Overview and the cosmological legacy of Planck
- U-boson production in e+e- annihilations, psi and Upsilon decays, and Light Dark Matter
- Naturally Light Hidden Photons in LARGE Volume String Compactifications
- Abelian Hidden Sectors at a GeV
- Extra-weakly Interacting Dark Matter
- Poincare' invariance constraints on NRQCD and potential NRQCD
- Dark Matter and Dark Forces from a supersymmetric hidden sector
- Hadronic quarkonium decays at order v^7
- Poincaré invariance in NRQCD and pNRQCD revisited