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\(B^0 -\overline{B^0}\) mixing, \(B\rightarrow J/\psi K_s\) and \(B\rightarrow X_d \gamma\) in general MSSM

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Abstract.

We consider the gluino-mediated SUSY contributions to B0 -\( \overline{B^0}\) mixing, \(B\rightarrow J/\psi K_s\) and \(B\rightarrow X_d \gamma\) in the mass insertion approximation. We find that the (LL) mixing parameter can be as large as \(\vert (\delta_{13}^d)_{\mathrm {{LL}}} \vert \lesssim 2 \times 10^{-1}\), but the (LR) mixing is strongly constrained by the \(B\rightarrow X_d \gamma\) branching ratio and we find \(\vert (\delta_{13}^d)_{\mathrm {{LR}}} \vert \lesssim 10^{-2}\). The implications for the direct CP asymmetry in \(B\rightarrow X_d \gamma\) and the dilepton charge asymmetry (All) are also discussed, where substantial deviations from the standard model (SM) predictions are possible.

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Received: 1 July 2002 / Published online: 24 September 2002

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Ko, P., Kramer, G. & Park, Jh. \(B^0 -\overline{B^0}\) mixing, \(B\rightarrow J/\psi K_s\) and \(B\rightarrow X_d \gamma\) in general MSSM. Eur. Phys. J. C 25, 615–622 (2002). https://doi.org/10.1140/epjc/s2002-01029-x

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  • DOI: https://doi.org/10.1140/epjc/s2002-01029-x

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