A Theory for Maximal Flavor Violation

TL;DR

This paper proposes a theoretical framework where maximal flavor violation occurs beyond the Standard Model, introducing new right-handed gauge bosons that could explain certain particle physics anomalies.

Contribution

It introduces a novel scenario of maximal flavor mixing involving right-handed gauge bosons, challenging the assumption of small flavor violations in existing theories.

Findings

Potential explanation for B_d and B_s system anomalies

Possible account for Tevatron top forward-backward asymmetry

Demonstrates flavor violation need not be suppressed by Yukawa couplings

Abstract

Theories of flavor violation beyond the Standard Model typically suppose that the new contributions must be small, for example suppressed by Yukawa couplings, as in Minimal Flavor Violation. We show that this need not be true, presenting a case for flavor violation which maximally mixes the first and third generation flavors. As an example, we realize this scenario via new right-handed gauge bosons, which couple predominantly to the combinations (u,b)_R and (t,d)_R. We show that this new flavor violation could be responsible for several anomalies, focusing in particular on the B_d and B_s systems, and the Tevatron top forward-backward asymmetry.