Asymmetric dark matter, baryon asymmetry and lepton number violation

Mads T. Frandsen; Claudia Hagedorn; Wei Chih Huang; Emiliano Molinaro; Heinrich Päs

doi:10.1016/j.physletb.2018.05.043

Asymmetric dark matter, baryon asymmetry and lepton number violation

Mads T. Frandsen, Claudia Hagedorn, Wei Chih Huang^*, Emiliano Molinaro, Heinrich Päs

^*Corresponding author for this work

Department of Physics, Chemistry and Pharmacy

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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.

Original language	English
Journal	Physics Letters B
Volume	782
Pages (from-to)	387-394
ISSN	0370-2693
DOIs	https://doi.org/10.1016/j.physletb.2018.05.043
Publication status	Published - 2018

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10.1016/j.physletb.2018.05.043Licence: CC BY

Asymmetric dark matter, baryon asymmetry and lepton number violationFinal published version, 516 KBLicence: CC BY

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title = "Asymmetric dark matter, baryon asymmetry and lepton number violation",

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.",

author = "Frandsen, {Mads T.} and Claudia Hagedorn and Huang, {Wei Chih} and Emiliano Molinaro and Heinrich P{\"a}s",

year = "2018",

doi = "10.1016/j.physletb.2018.05.043",

language = "English",

volume = "782",

pages = "387--394",

journal = "Physics Letters B",

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TY - JOUR

T1 - Asymmetric dark matter, baryon asymmetry and lepton number violation

AU - Frandsen, Mads T.

AU - Hagedorn, Claudia

AU - Huang, Wei Chih

AU - Molinaro, Emiliano

AU - Päs, Heinrich

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

U2 - 10.1016/j.physletb.2018.05.043

DO - 10.1016/j.physletb.2018.05.043

M3 - Journal article

AN - SCOPUS:85048501706

SN - 0370-2693

VL - 782

SP - 387

EP - 394

JO - Physics Letters B

JF - Physics Letters B

ER -

Asymmetric dark matter, baryon asymmetry and lepton number violation

Abstract

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