On the thermal history of calculable gauge mediation
Abstract
Many messenger models with realistic gaugino masses are based on metastable vacua. In this work we study the thermal history of some of these models. Analyzing Rsymmetric models, we point out that while some of the known messenger models clearly prefer the supersymmetric vacuum, there is a vast class of models where the answer depends on the initial conditions. Along with the vacuum at the origin, the high temperature thermal potential also possesses a local minimum far away from the origin. This vacuum has no analog at zero temperature. The first order phase transition from this vacuum into the supersymmetric vacuum is parametrically suppressed, and the theory, starting from that vacuum, is likely to evolve to the desired gaugemediation vacuum. We also comment on the thermal evolution of models without Rsymmetry.
 Publication:

Journal of High Energy Physics
 Pub Date:
 October 2009
 DOI:
 10.1088/11266708/2009/10/054
 arXiv:
 arXiv:0907.3930
 Bibcode:
 2009JHEP...10..054K
 Keywords:

 High Energy Physics  Theory;
 High Energy Physics  Phenomenology
 EPrint:
 22 pages. V2: Comments on the SM effects added. Minor corrections. Reference added. Valuable discussion with S. Abel, J. Jaeckel and V. Khoze acknowledged. V3: Types of EOGM explicitly defined in the introduction. Discussions about the phase transitions expanded. Typo corrected. Journal version