Symmetry Relations for Heavy-to-Light Meson Form Factors at Large Recoil
- SLAC
The description of large-recoil heavy-to-light meson form factors is reviewed in the framework of soft-collinear effective theory. At leading power in the heavy-quark expansion, three classes of approximate symmetry relations arise. The relations are compared to experimental data for D {yields} K* and D{sub s} {yields} {phi} form factors, and to light-cone QCD sum rule predictions for B {yields} {pi} and B {yields} {rho} form factors. Implications for the extraction of |V{sub ub}| from semileptonic B {yields} {rho} decays are discussed.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC), Menlo Park, CA
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-76SF00515;
- OSTI ID:
- 839592
- Report Number(s):
- SLAC-PUB-10847
- Country of Publication:
- United States
- Language:
- English
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