Holographic gauge mediation via strongly coupled messengers
Abstract
We consider a relative of semidirect gauge mediation where the hidden sector exists at large ’t Hooft coupling. Such scenarios can be difficult to describe using perturbative field theory methods but may fall into the class of holographic gauge mediation scenarios, meaning that they are amenable to the techniques of gauge/gravity duality. We use a recently found gravity solution to examine one such case, where the hidden sector is a cascading gauge theory resulting in a confinement scale not much smaller than the messenger mass. In the original construction of holographic gauge mediation, as in other examples of semidirect gauge mediation at strong coupling, the primary contributions to visible sector soft terms come from weakly coupled messenger mesons. In contrast to these examples, we describe the dual of a gauge theory where there are significant contributions from scales in which the strongly coupled messenger quarks are the effective degrees of freedom. In this regime, the visible sector gaugino mass can be calculated entirely from holography.
 Publication:

Physical Review D
 Pub Date:
 January 2010
 DOI:
 10.1103/PhysRevD.81.026005
 arXiv:
 arXiv:0911.0019
 Bibcode:
 2010PhRvD..81b6005M
 Keywords:

 11.25.Tq;
 11.25.Mj;
 12.60.Jv;
 Gauge/string duality;
 Compactification and fourdimensional models;
 Supersymmetric models;
 High Energy Physics  Theory;
 High Energy Physics  Phenomenology
 EPrint:
 42 pages, 3 figures, references added, typos and minor errors correceted