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Bd,s→ρ,ω,K*,ϕ decay form factors from light-cone sum rules reexamined

Ball, P.; Zwicky, R.

Bd,s→ρ,ω,K*,ϕ decay form factors from light-cone sum rules reexamined Thumbnail


Authors

P. Ball

R. Zwicky



Abstract

We present an improved calculation of B--> light vector form factors from light-cone sum rules, including one-loop radiative corrections to twist-2 and twist-3 contributions, and leading order twist-4 corrections. The total theoretical uncertainty of our results at zero momentum transfer is typically 10% and can be improved, at least in part, by reducing the uncertainty of hadronic input parameters. We present our results in a way which details the dependence of the form factors on these parameters and facilitates the incorporation of future updates of their values from, e.g., lattice calculations. We also give simple and easy-to-implement parametrizations of the q2 dependence of the form factors which are valid in the full kinematical regime of q2.

Citation

Ball, P., & Zwicky, R. (2005). Bd,s→ρ,ω,K*,ϕ decay form factors from light-cone sum rules reexamined. Physical Review D, Particles and fields, 71(1), https://doi.org/10.1103/physrevd.71.014029

Journal Article Type Article
Publication Date 2005
Deposit Date Jan 9, 2009
Publicly Available Date Mar 29, 2024
Journal Physical Review D, Particles and fields
Print ISSN 0556-2821
Electronic ISSN 1089-4918
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 71
Issue 1
DOI https://doi.org/10.1103/physrevd.71.014029
Keywords Twist distribution amplitudes, Perturbative QCD correction, Asterisk-B-Pi, Quantum chromodynamics, Asymptotic-behavior, Exclusive processes, Resonance physics, Vector-Mesons, Lattice QCD, Heavy.

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Copyright Statement
© 2005 by The American Physical Society. All rights reserved.





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