Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-09-22
Phys.Rev. D61 (2000) 073008
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages, LaTeX, no figures, updated version to be published in Physical Review D
Scientific paper
10.1103/PhysRevD.61.073008
The decays of $B$ mesons to charmless final states consisting of a vector meson ($V$) and a pseudoscalar meson ($P$) are analyzed within flavor SU(3). Predictions are compared with new data from the CLEO Collaboration. Dominant contributions to amplitudes and subdominant interfering terms are identified. Evidence is found for a specific penguin amplitude (contributing, for example, to $B^+ \to \rho^+ K^0$) at a level much higher than that implied by most explicit models. The validity of the conclusion $\cos \gamma < 0$, obtained through other analyses of $B \to VP$ decays, is examined here from a less model-dependent standpoint. It is found that several processes are consistent with $\cos \gamma < 0$ (or $\cos \alpha > 0$), and measurements are suggested which could make this conclusion more robust.
Gronau Michael
Rosner Jonathan L.
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