SUSY-QCD corrections to stop annihilation into electroweak final states including Coulomb enhancement effects
High Energy Physics - Phenomenology
2015-02-19 v4
Abstract
We present the full supersymmetric QCD corrections for stop-anti-stop annihilation into electroweak final states within the Minimal Supersymmetric Standard Model (MSSM). We also incorporate Coulomb corrections due to gluon exchange between the incoming stops. Numerical results for the annihilation cross sections and the predicted neutralino relic density are presented. We show that the impact of the radiative corrections on the cosmologically preferred region of the parameter space can become larger than the current experimental uncertainty, shifting the relic bands within the considered regions of the parameter space by up to a few tens of GeV.
Keywords
Cite
@article{arxiv.1410.8063,
title = {SUSY-QCD corrections to stop annihilation into electroweak final states including Coulomb enhancement effects},
author = {J. Harz and B. Herrmann and M. Klasen and K. Kovařík and M. Meinecke},
journal= {arXiv preprint arXiv:1410.8063},
year = {2015}
}
Comments
20 pages, 13 figures, updated to version published in Phys. Rev. D