Mayumi Aoki

CP asymmetry for radiative B meson decay in the supersymmetric Standard Model

We study a rate asymmetry in the inclusive decay B → Xsγ, assuming the supersymmetric standard model based on N = 1 supergravity. A complex coefficient A for scalar-trilinear couplings is the source of CP violation, which is contained in the mass-squared matrices for squarks. The model parameters are non-trivially constrained by experimental results for the branching ratio of the radiative decay and for the electric dipole moments of the neutron and the electron. The decay rate asymmetry is predicted to be much larger than that by the standard model in a wide region of the parameter space compatible with the experiments. Its magnitude can be maximally around 0.1, which will be well accessible at B factories.

Implications of Baryon Asymmetry for the Electric Dipole Moment of the Neutron

The supersymmetric standard model (SSM) contains a new source of CP violation in the mass-squared matrices for squarks, which could imply the t squark mediation of the charge transport mechanism producing the baryon asymmetry of the universe. This CP-violating source also induces the electric dipole moment (EDM) of the neutron. We show that this t-squark transport can lead to a baryon asymmetry consistent with its observed value within reasonable ranges of SSM parameters, where the neutron EDM has a magnitude slightly smaller than its experimental upper bound.

Decay rate asymmetry in B ---> X(s) gamma as a signature of supersymmetry

In the supersymmetric standard model, the radiative B-meson decay

Supersymmetric model with an extra U(1) gauge symmetry forbidding proton decay

\stackrel{\ensuremath{\rightarrow}}{B}{X}_{s}\ensuremath{\gamma}

Electroweak Baryogenesis from Chargino Transport in the Supersymmetric Model

could receive a large contribution from a new source of flavor-changing neutral current, which also violates

CP violation in the top quark system through light squarks

\mathrm{CP}

Supersymmetric extension of the standard model with naturally stable proton

invariance. The

DECAY RATE ASYMMETRY OF TOP SQUARK

\mathrm{CP}

Perturbation analysis of deformed Q-balls and primordial magnetic fields

-conjugate processes then may sizably differ in decay width. If a new

CONTRIBUTIONS OF VECTOR-LIKE QUARKS TO B → Xsγ AND

\mathrm{CP}