CP asymmetry in B̄<sup>0</sup> → K<sup>-</sup>π<sup>+</sup> from supersymmetric flavor changing interactions
Journal
Physical Review D - Particles, Fields, Gravitation and Cosmology
Journal Volume
71
Journal Issue
5
Pages
1-5
Date Issued
2005
Author(s)
Abstract
Recently BABAR and Belle Collaborations have measured direct CP asymmetry ACP = -0.114 ± 0.020 in B̄0 → K -π+. The experimental value is substantially different from the QCD factorization prediction. We show that supersymmetry flavor changing neutral current interaction via gluonic dipole can explain the difference. CP asymmetries in other B → K π decays are predicted to be sizable. Taking this asymmetry as a constraint, we find that the allowed supersymmetry parameter space is considerably reduced compared with constraint from B → Xsγ alone. We also find the allowed time-dependent CP asymmetries Sf in B̄0 → K̄*0 → π0KSγ and B̄0 → φKS to be large. These predictions are quite different than those predicted in the standard model and can be tested in the near future. ©2005 The American Physical Society.
Type
journal article