B_s-B_s-bar mixing and lepton flavor violation in SUSY SO(10)

TL;DR

This paper analyzes flavor physics in a SUSY SO(10) model, linking B_s mixing and lepton flavor violation, showing potential for significant deviations from the Standard Model while respecting experimental bounds.

Contribution

It provides a detailed quantitative analysis connecting B_s-B_s-bar mixing with lepton flavor violation in a specific SUSY SO(10) framework, highlighting possible large effects.

Findings

Potential order-of-magnitude enhancement of B_s mass difference

Reconciliation with bounds on lepton flavor violation

Qualitative discussion of Delta B=1 decays

Abstract

We present a quantitative analysis of the flavor physics of a SUSY SO(10) model proposed by Chang, Masiero, and Murayama, linking b -> s transitions to the large observed atmospheric neutrino mixing. We consider B_s-B_s-bar mixing and tau -> mu gamma and discuss their correlation paying careful attention to their different dependences on model parameters. Our analysis shows that an order-of-magnitude enhancement of the mass difference with respect to the Standard Model is possible and can be reconciled with the most stringent bounds on lepton flavor violation. The situation for various Delta B=1 decays is discussed qualitatively.