Nonleptonic two-body charmless B decays involving a tensor meson in ISGW2 model

Abstract

Nonleptonic charmless B decays into a pseudoscalar (P) or a vector (V) meson accompanying a tensor (T) meson are re-analyzed. We scrutinize the hadronic uncertainties and ambiguities of the form factors which appear in the literature. The Isgur-Scora-Grinstein-Wise updated model (ISGW2) is adopted to evaluate the relevant hadronic matrix elements. We calculate the branching ratios and CP asymmetries for various $B\to P(V)T$ decay processes. With the ISGW2 model, the branching ratios are enhanced by about an order of magnitude compared to the previous estimates. We show that the ratios $\text{calB}(B\to VT)/\text{calB}(B\to PT)$ for some strangeness-changing processes are very sensitive to the CKM angle $\gamma$ (${\varphi }_3$).

Comments: 23 pages, REVTEX; minor clarifications included; to appear in Phys. Rev. D