1. Asymmetric dark matter, baryon asymmetry and lepton number violation
- Author
-
Mads T. Frandsen, Claudia Hagedorn, Heinrich Päs, Emiliano Molinaro, and Wei-Chih Huang
- Subjects
SPHALERONS ,Nuclear and High Energy Physics ,Particle physics ,media_common.quotation_subject ,MODELS ,Dark matter ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,NEUTRINO MASS ,01 natural sciences ,High Energy Physics - Experiment ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology (hep-ph) ,Baryon asymmetry ,EARLY UNIVERSE ,Double beta decay ,0103 physical sciences ,010306 general physics ,media_common ,Physics ,NON-CONSERVATION ,Large Hadron Collider ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,COSMOLOGICAL BARYON ,Observable ,BARYOGENESIS ,Global symmetry ,Lepton number ,lcsh:QC1-999 ,Universe ,High Energy Physics - Phenomenology ,High Energy Physics::Experiment ,lcsh:Physics - Abstract
We study the effect of lepton number violation (LNV) on baryon asymmetry, generated in the early Universe, in the presence of a dark sector with a global symmetry $U(1)_X$, featuring asymmetric dark matter (ADM). We show that in general LNV, observable at the LHC or in neutrinoless double beta decay experiments, cannot wash out a baryon asymmetry generated at higher scales, unlike in scenarios without such dark sector. An observation of LNV at the TeV scale may thus support ADM scenarios. Considering several models with different types of dark matter (DM), we find that the DM mass is of the order of a few GeV or below in our scenario., Comment: 12 pages, 1 figure
- Published
- 2018