New approach for calculating heavy-to-light form factors with QCD sum rules on the light-cone
arXiv:hep-ph/0007317 · doi:10.1088/1126-6708/2001/01/005
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.
arXiv comment13 pages, LaTeX