How light the lepton flavor changing gauge bosons can be

Abstract Spontaneous breaking of inter-family (horizontal) gauge symmetries can be at the origin of the mass hierarchy between the fermion families. The corresponding gauge bosons have flavor-nondiagonal couplings which generically induce the flavor changing phenomena, and this puts strong lower lim...

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Bibliographic Details
Main Authors: Benedetta Belfatto, Zurab Berezhiani
Format: Article
Language:English
Published: SpringerOpen 2019-03-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-019-6724-5