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- Title
Neutrino phenomenology from leptogenesis.
- Authors
Buccella, Franco; Fiorillo, Damiano F. G.; Miele, Gennaro; Morisi, Stefano; Pisanti, Ofelia; Santorelli, Pietro
- Abstract
Assuming a type-I seesaw mechanism for neutrino mass generation and invoking a baryogenesis via leptogenesis scenario, we consider a reasonable hierarchical structure for Dirac neutrino mass matrix, similar to up-type quark mass matrix. These hypotheses imply a relevant connection between high scale CP violation and low energy one. By requiring a compact heavy neutrino mass spectrum, which allows to circumvent Davidson-Ibarra limit, one can obtain an efficient leptogenesis restricting the allowed region for low energy neutrino parameters. Once the oscillating parameters are taken inside a 3σ range, through the numerical resolution of the leptogenesis Boltzmann equations one gets the following allowed intervals for the lightest neutrino mass and the Dirac CP phase: -0.90π<δ<-0.75π and m1∼(0.002-0.004) eV.
- Subjects
NEUTRINO oscillation; MASS spectrometry; QUARKS; LEPTONS (Nuclear physics); YUKAWA interactions
- Publication
European Physical Journal C -- Particles & Fields, 2018, Vol 78, Issue 10, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-018-6299-6