Intrinsic flavor violation for massive neutrinos
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Data
2008-12-01
Autores
Nishi, C. C. [UNESP]
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Amer Physical Soc
Resumo
It is shown that intrinsic neutrino flavor violation invariably occurs when neutrinos are created within the standard model augmented by the known massive neutrinos, with mixing and nondegenerate masses. The effects are very small but much greater than the naive estimate Delta m(2)/E nu(2) or the branching ratio of indirect flavor violating processes such as mu -> e gamma within the SM. We specifically calculate the probability (branching ratio) of pion decay processes with flavor violation, such as pi -> mu(nu) over bar (e), showing nonzero results.
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Physical Review D. College Pk: Amer Physical Soc, v. 78, n. 11, p. 10, 2008.