An enhanced electroweak penguin amplitude due to the presence of unknown new physics can explain the discrepancies found between theory and experiment in the B → πK decays, in particular in ACP(B − → πK)−ACP(B̄ 0 → πK), but the current precision of the theoretical and experimental results does not allow to draw a firm conclusion. We argue that the B̄s → φρ 0 and B̄s → φπ 0 decays offer an addition...

I discuss the comparison of the current theoretical calculations of ε/ε with the experimental data. Lacking reliable “first principle” calculations, phenomenological approaches may help in understanding correlations among different contributions and available experimental data. In particular, in the chiral quark model approach the same dynamics which underlies the ∆I = 1/2 selection rule in kao...

Using 3.3 Million BB̄ pairs accumulated with the CLEO detector we have measured B(B → Kπ) = (1.5 −0.4 ± 0.1± 0.1)× 10, B(B → Kπ) = (2.3 −1.0 ± 0.2± 0.2)× 10, and B(B → η′K+) = (7.8 −2.2±1.0)×10. These constitute the first observations of exclusive B decays to charmless hadronic final states. Furthermore, a measurement of B(B → hπ) = (1.6 +0.3 −0.5 −0.2 ± 0.1) × 10, as well as upper limits on var...

Using the factorization approach and considering the contributions of the currentcurrent, QCD penguin and electroweak penguin operators at the leading approximation, the decay amplitudes and decay widths of Bq → Dq(D q)P and Bq → Dq(D q )V transitions, where q = u, d, s and P and V are pseudoscalar and vector mesons, are calculated in terms of the transition form factors of the Bq → Dq and Bq →...

We study possible effects of new physics in CP asymmetries in two-body B s decays in left-right models with spontaneous CP violation. Considering the contributions of new CP phases to the B s mixing as well as to the penguin dominated decay amplitudes we show that, with the present constraints large deviations from the standard model predictions in CP asymmetries are allowed in both cases. Dete...

A new way of determining the phases of weak amplitudes in charged B decays based on SU(3) symmetry is proposed. The CP violating phase γ can now be determined without the previous difficulty associated with electroweak penguins. Typeset using REVTEX Work supported in part by the Department of Energy Grant No. DE-FG06-85ER40224. 1 Detection of CP violation and verification of the unitarity trian...