The Messenger Sector of SUSY Flavour Models and Radiative Breaking of Flavour Universality
Lorenzo Calibbi, Zygmunt Lalak, Stefan Pokorski, Robert Ziegler
TL;DR
This paper investigates how flavour messenger sectors in SUSY models affect the soft SUSY breaking terms, showing that radiative effects can break universality and induce flavor off-diagonal soft masses.
Contribution
It provides a broad analysis of the impact of flavour messenger sectors on soft SUSY breaking terms, especially when the flavour scale is below the mediation scale.
Findings
Radiative breaking of soft term universality occurs below the flavour scale.
Flavour off-diagonal soft masses can be comparable to tree-level estimates.
The analysis covers a broad class of SUSY flavour models.
Abstract
The flavour messenger sectors and their impact on the soft SUSY breaking terms are investigated in SUSY flavour models. In the case when the flavour scale M is below the SUSY breaking mediation scale M_S, the universality of soft terms, even if assumed at M_S, is radiatively broken. We estimate this effect in a broad class of models. In the CKM basis that effect gives flavour off-diagonal soft masses comparable to the tree-level estimate based on the flavour symmetry.
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