Sweet Spot Supersymmetry

Ibe, Masahiro ; Kitano, Ryuichiro ; /SLAC /Stanford U., Phys. Dept.

Stanford Linear Accelerator Center

关键词: Sparticles;    Abundance;    Dimensions;    Scalars;    Nonluminous Matter;   

DOI  :  10.2172/908567
RP-ID  :  SLAC-PUB-12532
RP-ID  :  AC02-76SF00515
RP-ID  :  908567

美国|英语

来源: UNT Digital Library

【 摘 要 】

We find that there is no supersymmetric flavor/CP problem, {mu}-problem, cosmological moduli/gravitino problem or dimension four/five proton decay problem in a class of supersymmetric theories with O(1) GeV gravitino mass. The cosmic abundance of the nonthermally produced gravitinos naturally explains the dark matter component of the universe. A mild hierarchy between the mass scale of supersymmetric particles and electroweak scale is predicted, consistent with the null result of a search for the Higgs boson at the LEP-II experiments. A relation to the strong CP problem is addressed. We propose a parametrization of the model for the purpose of collider studies. The scalar tau lepton is the next to lightest supersymmetric particle in a theoretically favored region of the parameter space. The lifetime of the scalar tau is of O(1000) seconds with which it is regarded as a charged stable particle in collider experiments. We discuss characteristic signatures and a strategy for confirmation of this class of theories at the LHC experiments.