Theorie-Palaver

May 23, 2017 at 2:30 p.m. in THEP social room

Upalaparna Banerjee

Federico Gasparotto

Pouria Mazloumi

Yong Xu

TeV scale MSSM Dark Matter and the electroweak Sommerfeld effect
Martin Beneke (TU Munich)


For heavy MSSM dark matter with a dominant triplet (wino) component, resummation of large quantum corrections due to the electroweak force (the "Sommerfeld" effect) is imperative for a reliable calculation of the annihilation cross section.
In this talk I first discuss how this is done within the non-relativistic effective field theory of the full MSSM, including a brief discussion of finite temperature effects and the (ir)relevance of WIMPonium bound state capture processes. It is then investigated whether dominantly wino dark matter with the correct thermally produced relic density remains viable in the light of strong constraints from the non-observation of cosmic ray and terrestrial dark-matter on nuclei scattering signals.