B → K*ℓ+- decays with polarized K*

C. H. Chen, C. Q. Geng

研究成果: Article同行評審


We study the exclusive decays of B → K*ℓ+- within the framework of the PQCD. We obtain the form factors for the B → K* transition in the large recoil region, where the PQCD for heavy B meson decays is reliable. We find that the form factors at q2 = 0 are consistent with those from the large energy effective theory combined with the heavy quark effective theory and the experiment of B → K*γ. Via the decay chain of B → K*(Kπ) ℓ+-, we can study many physical observables which are related to the different helicity combinations of B → K*ℓ+-, such as the forward-backward asymmetries (FBAs). In particular, we can study the T violating effect which is small in the standard model but can be up to 10% in models with new physics.

頁(從 - 到)1443-1448
期刊International Journal of Modern Physics A
出版狀態Published - 2003 3月 30

All Science Journal Classification (ASJC) codes

  • 原子與分子物理與光學
  • 核能與高能物理
  • 天文和天體物理學


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