B->pi and B->K Transitions from QCD Sum Rules on the Light-Cone

Details B->pi and B->K Transitions from QCD Sum Rules on the Light-Cone B->pi and B->K Transitions from QCD Sum Rules on the Light-Cone

1998-02-23

arxiv.org/abs/hep-ph/9802394v2

JHEP 9809 (1998) 005

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages Latex plus three postscript figures; extended version including a discussion of the heavy quark limit and the effect

Scientific paper

10.1088/1126-6708/1998/09/005

I calculate the form factors describing semileptonic and penguin-induced decays of B mesons into light pseudoscalar mesons. The form factors are calculated from QCD sum rules on the light-cone including contributions up to twist 4, radiative corrections to the leading twist contribution and SU(3)-breaking effects. The theoretical uncertainty is estimated to be \sim 15%. The heavy-quark-limit relations between semileptonic and penguin form factors are found to be valid in the full accessible range of momentum transfer.

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