Constraints on SUSY Gluonic Dipole Interaction from B\to KπDecays

Details Constraints on SUSY Gluonic Dipole Interaction from B\to KπDecays Constraints on SUSY Gluonic Dipole Interaction from B\to KπDecays

2001-06-20

arxiv.org/abs/hep-ph/0106223v2

Phys.Rev.D64:094018,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1103/PhysRevD.64.094018

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.

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