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→π transition.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/49112/2/jhep012001005.pd