Charmless $B \to PP $ decays and the new physics effects in the minimal supergravity model

Details Charmless $B \to PP $ decays and the new physics effects in the minimal supergravity model Charmless $B \to PP $ decays and the new physics effects in the minimal supergravity model

2004-07-19

arxiv.org/abs/hep-ph/0407205v4

Phys.Rev.D70:094008,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, Latex file, 4 ps and eps figures, minor corrections, final version to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.70.094008

By employing the QCD factorization approach, we calculate the new physics contributions to the branching radios of the two-body charmless $ B \to PP$ decays in the framework of the minimal supergravity (mSUGRA) model. Within the considered parameter space, we find that (a) the supersymmetric (SUSY) corrections to the Wilson coefficients $C_k$ ($k=3-6$) are very small and can be neglected safely, but the leading order SUSY contributions to $C_{7\gamma}(M_W)$ and $C_{8g}(M_W)$ can be rather large and even change the sign of the corresponding coefficients in the standard model; (b) the possible SUSY contributions to those penguin-dominated decays in mSUGRA model can be as large as $30-50%$; (c) for the well measured $B \to K \pi$ decays, the significant SUSY contributions play an important rule to improve the consistency of the theoretical predictions with the data; (d) for $B \to K \eta'$ decays, the theoretical predictions of the corresponding branching ratios become consistent with the data within one standard deviation after the inclusion of the large SUSY contributions in the mSUGRA model.

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