Constraints on SUSY Gluonic Dipole Interaction from B\to KπDecays

Abstract

In low energy SUSY theories exchange of gluino and squark with left-right mixing can produce a large gluonic dipole interaction. In this paper we study the effects of this interaction on $B\to K\pi$ using QCD improved factorization method. The Standard Model predicts a smaller branching ratio for $B^0\to {\bar{K}}^0{\pi }^0$ than experimental measured one. We find that within the parameter space allowed from $B\to \gamma X_s$ constraint, the SUSY dipole interaction can enhance this branching ratio to agree with the experimental measurement. Combining recent data for all the four ${\bar{B}}^0\to K^{-}{\pi }^{+},{\bar{K}}^0{\pi }^0$ and $B^{-}\to K^{-}{\pi }^0,{\bar{K}}^0{\pi }^{-}$ decay modes, we find that the allowed parameter space is reduced significantly compared with that using $B\to X_s\gamma$ data alone. It is found that even with these constraints, the predictions for CP violation in these modes can be dramatically different from those of the SM predictions.

22 pages, 22 figures. Major revise for B to K pi correction

References in corpus (2)

• A Measurement of the Branching Fraction for the Inclusive B --> X(s) gamma Decays with the Belle Detector
• QCD factorization for B -> PP

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• CP Asymmetry in ${\bar{B}}^0\to K^{-}{\pi }^{+}$ from SUSY Flavor Changing Interactions
• Studying of Bs --> K(*)-pi+, K(*)-rho+ decays within supersymmetry
• ${\bar{B}}^0\to {\pi }^{+}X$ in the Standard Model
• Alternative Approach to $B^{-}\to {\eta }^{\prime }{K}^{-}$ Branching Ratio Calculation
• New Source of CP violation in B physics ?