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New results on B→π,K,η decay form factors from light-cone sum rules

Ball, P.; Zwicky, R.

Authors

P. Ball

R. Zwicky



Abstract

We present an improved calculation of B--> light pseudoscalar 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 10 to 13% and can be improved, at least in part, by reducing the uncertainty of hadronic input parameters, in particular, those describing the twist-2 distribution amplitudes of the pi, K, and eta. 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.

Citation

Ball, P., & Zwicky, R. (2005). New results on B→π,K,η decay form factors from light-cone sum rules. Physical Review D, Particles and fields, 71, https://doi.org/10.1103/physrevd.71.014015

Journal Article Type Article
Publication Date 2005-01
Deposit Date Apr 28, 2008
Publicly Available Date Apr 28, 2008
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
DOI https://doi.org/10.1103/physrevd.71.014015
Keywords Pions distribution amplitude, Perturbative QCD correction, Asterisk-B-Pi, Quantum chromodynamics, Asymptotic-behavior, Exclusive processes, Wave-function, Heavy-quark, 2nd moment, Resonance physics.

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