CP VIOLATION IN THE NEXT TO MINIMAL SUPERSYMMETRIC STANDARD MODELa
msra(1999)
摘要
We consider spontaneous CP violation in the Next to Minimal Supersymmetric
Standard Model (NMSSM), without the usual $Z_3$ discrete symmetry. CP violation
can occur at tree level, raising a potential conflict with the experimental
bounds on the electric dipole moments of the electron and neutron. One escape
from this is to demand that the CP violating angles are small, but we find that
this entails an unacceptably light neutral Higgs.
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关键词
cp violation,electric dipole moment
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