Annihilation contributions and CP asymmetries in B+→π+K0, K+K0 and B0→K0K̄0
Journal
Physical Review D - Particles, Fields, Gravitation and Cosmology
Journal Volume
75
Journal Issue
3
Date Issued
2007
Author(s)
Abstract
Recently the branching ratios for B+→K+K̄0 and B0→K0K̄0 have been measured. Data indicate that the annihilation amplitudes in these decays are not zero. A nonzero annihilation amplitude plays an important role in CP violation for B+→π+K0, K+K̄0. Using the measured branching ratios for these decays, we show that there is an absolute bound of 5% for the size of CP asymmetry in B+→π+K0 from a relation between the amplitudes of these decays. The size of CP asymmetry in B+→K+K̄0 can, however, be as large as 90%. Future experimental data will test these predictions. © 2007 The American Physical Society.
Type
journal article