Heavy-to-light form factors for non-relativistic bound states

Details Heavy-to-light form factors for non-relativistic bound states Heavy-to-light form factors for non-relativistic bound states

2005-09-29

arxiv.org/abs/hep-ph/0509347v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented at QCD '05, Montpellier, July 2005, 4 pages, 4 figures

Scientific paper

We investigate transition form factors between non-relativistic QCD bound states at large recoil energy. Assuming the decaying quark to be much heavier than its decay product, the relativistic dynamics can be treated according to the factorization formula for heavy-to-light form factors obtained from the heavy-quark expansion in QCD. The non-relativistic expansion determines the bound-state wave functions to be Coulomb-like. As a consequence, one can explicitly calculate the so-called ``soft-overlap'' contribution to the transition form factor.

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