期刊
PHYSICS LETTERS B
卷 519, 期 3-4, 页码 238-242出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(01)01127-3
关键词
renormalization group equation; beta-function; neutrino mass
We re-derive the renormalization group equation for the effective coupling of the dimension five operator which corresponds to a Majorana mass matrix for the Standard Model neutrinos. We find a result which differs somewhat from, earlier calculations, leading to modifications in the evolution of leptonic mixing angles and CP phases. We also present a general method for calculating beta -functions from counterterms in MS-like renormalization schemes, which works for tensorial quantities. (C) 2001 Elsevier Science B.V. All rights reserved.
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