Resonant Leptogenesis in the Minimal B-L Extended Standard Model at TeV - High Energy Physics - PhenomenologyReportar como inadecuado




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Abstract: We investigate the resonant leptogenesis scenario in the minimal B-L extendedstandard modelSM with the B-L symmetry breaking at the TeV scale. Throughdetailed analysis of the Boltzmann equations, we show how much the resultantbaryon asymmetry via leptogenesis is enhanced or suppressed, depending on themodel parameters, in particular, the neutrino Dirac Yukawa couplings and theTeV-scale Majorana masses of heavy degenerate neutrinos. In order to consider arealistic case, we impose a simple ansatz for the model parameters and analyzethe neutrino oscillation parameters and the baryon asymmetry via leptogenesisas a function of only a single CP-phase. We find that for a fixed CP-phase allneutrino oscillation data and the observed baryon asymmetry of the presentuniverse can be simultaneously reproduced.



Autor: Satoshi Iso, Nobuchika Okada, Yuta Orikasa

Fuente: https://arxiv.org/







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