Prospects for Direct CP Violaton in Exclusive and Inclusive Charmless B decays

Details Prospects for Direct CP Violaton in Exclusive and Inclusive Charmless B decays Prospects for Direct CP Violaton in Exclusive and Inclusive Charmless B decays

1998-09-05

arxiv.org/abs/hep-ph/9809282v2

Phys.Rev.Lett. 81 (1998) 5738-5741

Physics

High Energy Physics

High Energy Physics - Phenomenology

Minor changes, correct a small bug in Fig. 1(b). Version to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.81.5738

Within the Standard Model, CP rate asymmetries for $B\to K^-\pi^{+,0}$ could reach 10%. With strong final state phases, they could go up to 20--30%, even for $\bar K^0\pi^-$ mode which would have opposite sign. We can account for $K^-\pi^{+}$, $\bar K^0\pi^-$ and $\phi K$ rate data with new physics enhanced color dipole coupling and destructive interference. Asymmetries could reach 40--60% for $K\pi$ and $\phi K$ modes and are all of the same sign. We are unable to account for $K^-\pi^0$ rate. Our inclusive study supports our exclusive results.

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