The Standard Model and Supersymmetric Flavor Puzzles at the Large Hadron Collider

TL;DR

This paper explores how flavor symmetries in supersymmetric models could explain fermion masses and mixings at the LHC, challenging the minimal flavor violation paradigm and proposing models with testable predictions.

Contribution

It introduces non-minimally flavor violating supersymmetric models that account for lepton masses and mixings and predicts observable flavor violation signatures at the LHC.

Findings

Models can explain lepton masses and mixings

Predictions include metastable sleptons and reconstructible events

Potential for flavor measurements to resolve flavor puzzles

Abstract

Can the Large Hadron Collider explain the masses and mixings of the known fermions? A promising possibility is that these masses and mixings are determined by flavor symmetries that also govern new particles that will appear at the LHC. We consider well-motivated examples in supersymmetry with both gravity- and gauge-mediation. Contrary to spreading belief, new physics need not be minimally flavor violating. We build non-minimally flavor violating models that successfully explain all known lepton masses and mixings, but span a wide range in their predictions for slepton flavor violation. In natural and favorable cases, these models have metastable sleptons and are characterized by fully reconstructible events. We outline many flavor measurements that are then possible and describe their prospects for resolving both the standard model and new physics flavor puzzles at the Large Hadron Collider.