Charge asymmetry in B→K2*(1430)ω and its implications in B0→a2(1320)-π+ and a2(1320)-ρ+

doi:10.7523/j.issn.2095-6134.2012.4.001

›› 2012, Vol. 29 ›› Issue (4): 433-438.DOI: 10.7523/j.issn.2095-6134.2012.4.001

• Research Articles • Next Articles

Charge asymmetry in B→K₂^*(1430)ω and its implications in B⁰→a₂(1320)^-π⁺ and a₂(1320)^-ρ⁺

YANG De-Shan, YANG Shao-Kai

College of Physical Sciences, Graduate University, Chinese Academy of Sciences, Beijing 100049, China

Received:2011-04-27 Revised:2011-05-10 Online:2012-07-15

Abstract

Abstract:

The large charge asymmetry in B→K₂^*(1430)ω observed by the BaBar collaboration is hard to be explained within the framework of QCD factorization. We show that the enhanced tensor meson emission may cause such difficulties in the QCD factorization. We focus on the longitudinal part of the decay amplitude for B→K₂^*(1430)ω. We extract the tensor emission contribution from the experimental data and apply them to the Cabibbo favored B decays B⁰→a₂^*-π⁺(ρ⁺) by using the SU(3) flavor symmetry minimally. The predicted branching ratios of these decays are much greater than those obtained by the QCD factorization. Our results will be examined by future experimental measurements at the KEK-SuperB and LHCb.

Key words: B decays, charge asymmetry, tensor mesons, QCD factorization, flavor symmetry

CLC Number:

O572.2

YANG De-Shan, YANG Shao-Kai. Charge asymmetry in B→K₂^*(1430)ω and its implications in B⁰→a₂(1320)^-π⁺ and a₂(1320)^-ρ⁺[J]. , 2012, 29(4): 433-438.

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Charge asymmetry in B→K₂^*(1430)ω and its implications in B⁰→a₂(1320)^-π⁺ and a₂(1320)^-ρ⁺

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