Speaker: 
Julia Harz
Speaker affiliation: 
LPTHE, INP (CNRS)
Date: 
Friday, December 11, 2015 - 13:00
Room: 
Seminar Room
Title: 
Towards a precise prediction of the dark matter relic density within the MSSM
Abstract: 
With the latest Planck results the dark matter relic density is determined to an unprecedented precision and is thus an observable, which strongly constrains the parameter space of new physics models. However, different uncertainties enter the theoretical calculation of the dark matter relic density. In order to reduce those uncertainties, we have calculated next-to-leading order SUSY-QCD corrections to neutralino (co)annihilation processes including Coulomb enhancement effects within the MSSM. I will discuss technical aspects of interest as well as the phenomenology for different scenarios. Further, I will demonstrate that the impact of our performed NLO calculation can be larger than the current experimental uncertainty and can thus have significant impact on the cosmologically favoured MSSM parameter space. Finally, I will show our ongoing study combining all up to now performed SUSY-QCD NLO calculations for the first time and studying the corresponding scale uncertainty.