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New approach for calculating heavy-to-light form factors with QCD sum rules on the light-cone

We suggest a new approach for calculating heavy-to-light form factors. The method is based on light cone sum rules (LCSR) and covers the whole kinematical range of momentum transfer. The derivation of the new sum rule uses a suitable combination of double and single dispersion integrals. As an example we give numerical results for the form factor f^+ for the B -> pion transition.

preprint2000arXivOpen access
Stefan WeinzierlOleg Yakovlev
hep-ph
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Open access2 authors1 topic
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Stefan WeinzierlOleg Yakovlev

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