Extended Tree-Level Gauge Mediation

Details Extended Tree-Level Gauge Mediation Extended Tree-Level Gauge Mediation

2011-08-08

arxiv.org/abs/1108.1706v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 2 figures, 3 tables

Scientific paper

Tree-level gauge mediation (TGM) is a scenario of SUSY breaking in which the tree-level exchange of heavy (possibly GUT) vector fields generates flavor-universal sfermion masses. In this work we extend this framework to the case of E_6 that is the natural extension of the minimal case studied so far. Despite the number of possible E_6 subgroups containing G_SM is large (we list all rank 6 subgroups), there are only three different cases corresponding to the number of vector messengers. As a robust prediction we find that sfermion masses are SU(5) invariant at the GUT scale, even if the gauge group does not contain SU(5). If SUSY breaking is mediated purely by the U(1) generator that commutes with SO(10) we obtain universal sfermion masses and thus can derive the CMSSM boundary conditions in a novel scenario.

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