B → K Transition Form Factor with Tensor Current within the k T Factorization Approach

2008/01/09 by Dai-Min Zeng, Zeng Dai-min, Xing-Gang Wu +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1088/0256-307x/25/2/023

published as Chin.Phys.Lett.25:436,2008 · 8 pages, 4 figures, references added

arxiv created 2008/01/09 · openalex publication_date 2008/02/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

We apply the k T factorization approach to deal with the B → K transition form factor with tensor current in the large recoil regions. Main uncertainties for the estimation are discussed and we obtain F T B → K (0) = 0.25 ± 0.01 ± 0.02, where the first error is caused by the uncertainties from the pionic wavefunctions and the second is from that of the B-meson wavefunctions. This result is consistent with the light-cone sum rule results obtained in the literature.

Citations

• Form factors from light-cone sum rules withB-meson distribution amplitudes
• B→K transition form factor up to O(1/m²_b) within the kT factorization approach
• Observation of the decay B --> Kl+l-.