Ansatz for small FCNC with a non-universal Z′
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Journal Volume
680
Journal Issue
1
Pages
72-75
Date Issued
2009
Author(s)
Abstract
It is well known that a non-universal Z′ induces tree-level FCNC which are severely constrained by experiment, most notably meson mixing. We point out that there is a class of models, with a down-quark mass matrix of the Georgi-Jarlskog form, in which the FCNC in the down-type quark sector vanish or are strongly suppressed. The largest FCNC in these models would occur in the tc transition with a strength comparable to Vt s. © 2009 Elsevier B.V. All rights reserved.
Type
journal article