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 E6 that is the natural extension of the minimal case studied so far. Despite the number of possible E6 subgroups containing GSM 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. © 2011 SISSA.
Extended tree-level gauge mediation / Monaco, M.; Nardecchia, M.; Romanino, A.; Ziegler, R.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2011:10(2011). [10.1007/JHEP10(2011)022]
Extended tree-level gauge mediation
Nardecchia M.;
2011
Abstract
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 E6 that is the natural extension of the minimal case studied so far. Despite the number of possible E6 subgroups containing GSM 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. © 2011 SISSA.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
