Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-05-24
Phys.Rev.D61:091701,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages
Scientific paper
10.1103/PhysRevD.61.091701
We analyze CP violation in the supersymmetric standard model (MSSM) embedded minimally into a left-right symmetric gauge structure with the seesaw mechanism for neutrino masses. With the plausible assumption of universal scalar masses it is shown that CP violation in the hadron sector of the MSSM is described by a single phase residing in the supersymmetry breaking Lagrangian. This improves the CP properties of the MSSM by providing a natural solution to the SUSY CP problem. Furthermore, $\epsilon'/\epsilon$ vanishes in this model above the seesaw scale; extrapolation to the weak scale then leads to a prediction in agreement with the NA31 and the recent KTeV observations. The electric dipole moment of the neutron is naturally suppressed, we estimate its magnitude to be about $4 \times 10^{-29}$ ecm. Additional predictions include a tightly constrained super particle spectrum and vanishingly small CP asymmetries in the $B$ meson system.
Babu K. S.
Dutta Bhaskar
Mohapatra Rabindra N.
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