科研之友
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摘要
We present a complete model whose low energy effective theory is the R-parity violating next-to-minimal supersymmetric standard model with a baryon number violating (udd) over bar vertex of the minimal flavor violation supersymmetry (MFV SUSY) form, leading to prompt lightest superpartner decay and evading the ever stronger LHC bounds on low-scale R-parity conserving supersymmetry. MFV flavor structure is enforced by gauging an SU(3) flavor symmetry at high energies. After the flavor group is spontaneously broken, mass mixing between the standard model fields and heavy vectorlike quarks and leptons induces hierarchical Yukawa couplings that depend on the mixing angles. The same mechanism generates the (udd) over bar coupling, explaining its shared structure. A discrete R-symmetry is imposed, which forbids all other dangerous lepton and baryon-number violating operators (including Planck-suppressed operators) and simultaneously solves the mu problem. While flavor constraints require the flavor gauge bosons to be outside of the reach of the LHC, the vectorlike top partners could lie below 1 TeV.
- 出版日期2013-9-26
