Eur. Phys. J. C (2015) 75: 602
https://doi.org/10.1140/epjc/s10052-015-3816-8

Regular Article - Theoretical Physics

Minimal flavour violation and SU(5)-unification

Scuola Normale Superiore and INFN, Piazza dei Cavalieri 7, 56126, Pisa, Italy

^* e-mail: barbieri@sns.it

Received: 8 October 2015
Accepted: 26 November 2015
Published online: 17 December 2015

Abstract

Minimal flavour violation in its strong or weak versions, based on and , respectively, allows suitable extensions of the standard model at the TeV scale to comply with current flavour constraints in the quark sector. Here we discuss considerations analogous to minimal flavour violation (MFV) in the context of SU(5)-unification, showing the new effects/constraints that arise both in the quark and in the lepton sector, where quantitative statements can be made controlled by the CKM matrix elements. The case of supersymmetry is examined in detail as a particularly motivated example. Third generation sleptons and neutralinos in the few hundred GeV range are shown to be compatible with current constraints.