Supersymmetric Higgs-portal and X-ray lines
High Energy Physics - Phenomenology
2015-06-23 v2
Abstract
We consider a Dirac singlet fermion as thermal dark matter for explaining the X-ray line in the context of a supersymmetric Higgs-portal model or a generalized Dirac NMSSM. The Dirac singlet fermion gets a mass splitting due to their Yukawa couplings to two Higgs doublets and their superpartners, Higgsinos, after electroweak symmetry breaking. We show that a correct relic density can be obtained from thermal freeze-out, due to the co-annihilation with Higgsinos for the same Yukawa couplings. We discuss the phenomenology of the Higgsinos in this model such as displaced vertices at the LHC.
Keywords
Cite
@article{arxiv.1501.05479,
title = {Supersymmetric Higgs-portal and X-ray lines},
author = {Hyun Min Lee and Chan Beom Park and Myeonghun Park},
journal= {arXiv preprint arXiv:1501.05479},
year = {2015}
}
Comments
15 pages, 4 figures, references added