Heavy-to-light meson form factors at large recoil
Journal Article
·
· Physical Review. D, Particles Fields
- Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)
Heavy-to-light meson form factors at large recoil can be described using the same techniques as for hard exclusive processes involving only light hadrons. Two competing mechanisms appear in the large recoil regime, describing so-called 'soft-overlap' and 'hard-scattering' components of the form factors. It is shown how existing experimental data from B and D decays constrain the relative size of these components, and how lattice data can be used to study properties such as the energy-scaling laws obeyed by the individual components. Symmetry relations between different form factors (F{sub +}, F{sub 0} and F{sub T}), and between different heavy initial-state mesons (B and D) are derived in the combined heavy-quark and large-recoil limits, and are shown to generalize corresponding relations valid at small recoil. Form-factor parametrizations that are consistent with the large-recoil limit are discussed.
- OSTI ID:
- 20774597
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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