CP violation in Bs0 → K- π+, B 0 → K +π- decays and tests for SU(3) flavor symmetry predictions
Journal
Journal of High Energy Physics
Journal Volume
2013
Journal Issue
8
Date Issued
2013
Author(s)
Abstract
The LHCb collaboration has recently measured the first direct CP violation in Bs0 decays with a rate asymmetry ACP (B s0 → K- π+) given by 0.27 ± 0.04(stat) ± 0.01(syst). At the same time they also made the most precise measurement for ACP (B0 → K +π-) = -0.080 ± 0.007(stat) ± 0.003(syst). These data confirm the predicted relation, ACP (B0→ K+π -)ACP (Bs0 → K- π+)=-Br(Bs0 → K- π+)τ Bs0, in the standard model with SU(3) flavor symmetry. We discuss possible modifications due to SU(3) breaking effects to this relation. There are several other similar relations in B decays. Using current available data we study whether relevant relations hold in B 0 and Bs0 to PP and PV decays. Here P and V indicate pesudoscalar and vector mesons in the flavor octet representations. © 2013 SISSA, Trieste, Italy.
Type
journal article