Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-08-06
Phys.Rev.D78:075003,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
23 pages, 4 figures, 2 tables
Scientific paper
10.1103/PhysRevD.78.075003
Gauge mediation models have two drawbacks, that is, the so-called \mu-problem and a lack of predictability of the gravitino dark matter abundance. We show that conformal sequestering in the supersymmetry breaking sector offers attractive solutions to both problems. The correct mass scale of the \mu and B_\mu terms is generated by taking the gravitino mass of O(100) GeV without causing the flavor-changing neutral-current problem. Moreover, a large anomalous dimension of the supersymmetry breaking field naturally realizes the small stau and neutralino mass difference required for the coannihilation to work yielding the right dark matter abundance.
Shirai Satoshi
Takahashi Fuminobu
Yanagida Takayuki
Yonekura Kazuya
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