Models and Phenomenology of Maximal Flavor Violation

TL;DR

This paper explores models of maximal flavor violation where new scalars induce large flavor-changing transitions, demonstrating they are consistent with current data and can produce distinctive signals at colliders.

Contribution

It introduces and analyzes MxFV models with large flavor-changing couplings, showing their viability and potential collider signatures.

Findings

MxFV models are not excluded by existing flavor data.

Such models can produce unique signals at LHC and Tevatron.

They feature suppressed same-generation transitions and enhanced inter-generation flavor changes.

Abstract

We consider models of maximal flavor violation (MxFV), in which a new scalar mediates large q_3 <-> q_1 or q_3 <-> q_2 flavor changing transitions (q_i is an i'th generation quark), while q_3 <-> q_3 transitions are suppressed, e.g., \xi_{31}, \xi_{13} ~ V_{tb} and \xi_{33} ~ V_{td}, where \xi_{ij} are the new scalar couplings to quarks and V is the CKM matrix. We show that, contrary to the conventional viewpoint, such models are not ruled out by the existing low energy data on K^0, B^0 and D^0 oscillations and rare K and B-decays. We also show that these models of MxFV can have surprising new signatures at the LHC and the Tevatron.