http://arxiv.org/abs/2304.07180
In this conference paper, we consider effective field theories of non-relativistic dark matter particles interacting with a light force mediator in the early expanding universe. We present a general framework, where to account in a systematic way for the relevant processes that may affect the dynamics during thermal freeze-out. In the temperature regime where near-threshold effects, most notably the formation of bound states and Sommerfeld enhancement, have a large impact on the dark matter relic density, we scrutinize possible contributions from higher excited states and radiative corrections in the annihilations and decays of dark-matter pairs.
S. Biondini, N. Brambilla, G. Qerimi, et. al.
Mon, 17 Apr 23
21/51
Comments: Discussion about hierarchies of scales improved with respect to the published version in the conference proceedings. 4 pages, 2 figures, conference proceeding of “NuDM-2022”