0000000000285767

AUTHOR

Antonio Masiero

0000-0002-0071-1457

Supersymmetric origin of a lowaJ/ψCPasymmetry

We show that general minimal supersymmetric extensions of the standard model (MSSM) allow for a $\mathrm{CP}$ asymmetry in $\stackrel{\ensuremath{\rightarrow}}{B}J/\ensuremath{\psi}{K}_{S}$ well below the SM expectations with dominant supersymmetric contributions to ${\ensuremath{\varepsilon}}_{K}$ and ${\ensuremath{\varepsilon}}^{\ensuremath{'}}/\ensuremath{\varepsilon}.$ Indeed, we provide an explicit example of an MSSM with nonuniversal soft breaking terms fully consistent with the low results of this asymmetry recently announced by BaBar and Belle Collaborations.

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General flavor blind minimal supersymmetric standard model andCPviolation

We study the implications on flavor changing neutral current and $\mathrm{CP}$ violating processes in the context of supersymmetric theories without a new flavor structure (flavor blind supersymmetry). The low-energy parameters are determined by the running of the soft breaking terms from the grand unified scale with supersymmetric (SUSY) phases consistent with the electric dipole moment constraints. We find that the $\mathrm{CP}$ asymmetry in $\stackrel{\ensuremath{\rightarrow}}{b}s\ensuremath{\gamma}$ can reach large values potentially measurable at B factories, especially in the low $BR(\stackrel{\ensuremath{\rightarrow}}{b}s\ensuremath{\gamma})$ region, while the contributions to electr…

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General Flavor Blind MSSM and CP Violation

We study the implications on flavor changing neutral current and CP violating processes in the context of supersymmetric theories without a new flavor structure (flavor blind supersymmetry). The low energy parameters are determined by the running of the soft breaking terms from the grand unified scale with SUSY phases consistent with the EDM constraints. We find that the CP asymmetry in b --> s gamma can reach large values potentially measurable at B factories, especially in the low BR(b --> s gamma) region. We perform a fit of the unitarity triangle including all the relevant observables. In this case, no sizeable deviations from the SM expectations are found. Finally we analyze the …

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