2011/02/14 by Kiwoon Choi, Eung Jin Chun, Hyung Do Kim +3 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1103/physrevd.83.123503
published as Phys.Rev.D83:123503,2011 · 15 pages
arxiv created 2011/02/14 · openalex publication_date 2011/06/01 · arxiv updated 2011/06/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We revisit the idea of generating the Higgs \ensuremathμ parameter through a spontaneously broken Peccei-Quinn (PQ) symmetry in a gauge-mediated supersymmetry breaking scenario. For the messenger scale of gauge mediation higher than the PQ scale, the setup naturally generates \ensuremathμ\ensuremath∼msoft and the Higgs soft parameter B\ensuremath\lesssimO(msoft) with the CP phase of B aligned to the phase of gaugino masses, while giving the PQ scale vPQ\ensuremath∼√msoft\ensuremathΛ, where msoft denotes the gauge-mediated gaugino or sfermion masses and \ensuremathΛ is the cutoff scale which can be identified as the Planck scale or the grand unified theory scale. The PQ sector of the model results in distinctive cosmology including a late thermal inflation. We discuss the issue of dark matter and baryogenesis in the resulting thermal inflation scenario, and find that a right amount of gravitino dark matter can be produced together with a successful Affleck-Dine leptogenesis, when the gravitino mass m3/2=O(100) keV.