New approach for calculating heavy-to-light form factors with QCD sum rules on the light-cone
Stefan Weinzierl, Oleg Yakovlev
Abstract
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.
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