Moduli induced cogenesis of baryon asymmetry and dark matter

Show simple item record Dhuria, Mansi Hati, Chandan Sarkar, Utpal 2016-05-21T12:08:53Z 2016-05-21T12:08:53Z 2016-05
dc.identifier.citation Dhuria, Mansi; Hati, Chandan; and Sarkar, Utpal, "Moduli induced cogenesis of baryon asymmetry and dark matter", Physics Letters B, DOI: 10.1016/j.physletb.2016.03.018, vol. 756, pp. 376-383, May 2016. en_US
dc.identifier.issn 0370-2693
dc.description.abstract We study a cogenesis mechanism in which the observed baryon asymmetry of the universe and the dark matter abundance can be produced simultaneously at low reheating temperature without violating baryon number in the fundamental interactions. In particular, we consider a model which can be realized in the context of type IIB large volume string compactifications. The matter superfields in this model include additional pairs of color triplet and singlet superfields in addition to the Minimal Supersymmetric Standard Model (MSSM) superfields. Assuming that the mass of the additional singlet fermions is O(GeV)O(GeV) and of the color triplet fermions is O(TeV)O(TeV), we show that the modulus dominantly decays into the additional color triplet superfields. After soft supersymmetry (SUSY) breaking, the lightest eigenstate of scalar component of color triplet superfield further decays into fermionic component of singlet superfield and quarks without violating baryon number. Imposing discrete Z2Z2 symmetry, it follows that the singlet fermion will not further decay into the SM particles and therefore it can be considered as a stable asymmetric dark matter (ADM) component. We find that the decay of the lightest eigenstate of scalar component of color triplet superfield gives the observed baryon asymmetry in the visible sector, an asymmetric dark matter component with the right abundance and naturally explains cosmic coincidence. en_US
dc.description.statementofresponsibility by Mansi Dhuria, Chandan Hati and Utpal Sarkar
dc.format.extent vol. 756, pp. 376-383
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Moduli decay en_US
dc.subject Baryogenesis en_US
dc.subject Dark matter en_US
dc.subject LVS en_US
dc.title Moduli induced cogenesis of baryon asymmetry and dark matter en_US
dc.type Article en_US
dc.relation.journal Physics Letters B

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