Connecting low energy leptonicCPviolation to leptogenesis
نویسندگان
چکیده
منابع مشابه
Relating Leptogenesis to Low Energy CP Violation
Abstract. In the minimal left-right symmetric model with spontaneous CP violation, there are only two intrinsic CP violating phases to account for all CP violation in both the quark and lepton sectors. In addition, the leftand right-handed Majorana mass terms for the neutrinos are proportional to each other due to the parity in the model. This is thus a very constrained framework, making the ex...
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In supersymmetric models, the CP asymmetry produced in the decay of the lightest right-handed neutrino, ≡ ǫ, can be written as a function of weak scale parameters. We introduce a way of separating ǫ into contributions from the various weak-scale phases, and study the contribution of potentially measurable neutrino phases to leptogenesis. We find that the Majorana phase φ′, which could have obse...
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There are only two viable low-energy E6 subgroups: SU(3)C ×SU(2)L ×U(1)Y × U(1)N or SU(3)C × SU(2)L × SU(2)′R × U(1)YL+Y ′ R , which would not erase any preexisting lepton asymmetry of the Universe that may have been created by the decay of heavy singlet (right-handed) neutrinos or any other mechanism. They are also the two most favored E6 subgroups from a recent analysis of present neutral-cur...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2007
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.75.083511