arXiv:1801.10160·v2·High Energy Physics — Phenomenology
Cosmologically Viable Low-energy Supersymmetry Breaking
Anson Hook (1)🇺🇸 · Robert McGehee (2 and 3)🇺🇸 · Hitoshi Murayama (2,3,4) ((1) Maryland Center for Fundamental Physics, Department of Physics, University of Maryland, (2) Department of Physics, University of California, Berkeley, (3) Theoretical Physics Group, Lawrence Berkeley National Laboratory, (4) Kavli Institute for the Physics and Mathematics of the Universe (WPI))🇺🇸
Abstract
A recent cosmological bound on the gravitino mass, eV, together with LHC results on the Higgs mass and direct searches, excludes minimal gauge mediation with high reheating temperatures. We discuss a minimal, vector-mediated model which incorporates the seesaw mechanism for neutrino masses, allows for thermal leptogenesis, ameliorates the problem, and achieves the observed Higgs mass and a gravitino as light as - eV.
Comments: 7+3 pages, 6 figures; v2: clarified color triplet decay interactions, discussed and origins, fixed minor typos, published in Phys Rev D