Is the gamma-ray search for SUSY neutralinos still a thing in the 2020s?
by
Martin Vollmann(Tübingen University)
→
Europe/Berlin
seminar room 3 (bldg. 1b)
seminar room 3
bldg. 1b
Description
Weakly Interacting Massive Particles (WIMPs), and in particular, the supersymmetric neutralinos have been the most popular Dark Matter candidates over the last several decades and an enormous amount of effort has been put into searching for them via direct but also indirect means. Yet, these particles remain elusive and although there still remain large unexplored parameter regions within the WIMP paradigm, the attention has shifted into further candidate theories for Dark Matter in the last several years.
In this talk. I will revisit the WIMP from a more phenomenological point of view. Focusing on its indirect detection using air Cherenkov telescopes, i.e. gamma ray astronomy, I will present the, to this day, most accurate theoretical prediction for the prompt-emission spectrum from neutralino annihilation in the context of the Minimal Supersymmetric Standard Model. This is based on Ref. 2310.11067 and includes, for the first time, the effect of virtual chargino-antichargino annihilations that are "powered" by the non-relativistic field theoretic Sommerfeld effect. I will of course discuss how the numerical effect of these contributions can, in the most generic case, lead to qualitative differences with respect to previous calculations.
