Discrete Minimal Flavour Violation
Abstract
We investigate the consequences of replacing the continuous flavour symmetry of minimal flavour violation by a discrete group. Goldstone bosons, resulting from the breaking of the continuous flavour symmetry, generically lead to bounds on new flavour structure by many orders of magnitude above the TeV-scale. The absence of Goldstone bosons for discrete symmetries constitutes the primary motivation of our work. The four crystal-like groups Sigma(168), Sigma(72phi), Sigma(216phi) and Sigma(360phi)$ provide enough protection for a discrete TeV-scale MFV scenario in the case where Delta F = 2 processes are generated by two subsequent Delta F = 1 transitions.
Keywords
Cite
@article{arxiv.0910.0823,
title = {Discrete Minimal Flavour Violation},
author = {R. Zwicky and T. Fischbacher},
journal= {arXiv preprint arXiv:0910.0823},
year = {2010}
}
Comments
Presented at Flavianet workshop on "Low energy constraints on extensions of the Standard Model" from 23-27 July 2009 in Kazimierz, Poland and "Progress and Challenges in Flavour Physics" 29 Sep- 3 Oct 2009 in Primosten, Croatia, 7 pages, 1 figure