Published February 2007
| Version v1
Journal article
Precision study of B*Bπ coupling for the static heavy-light meson
- 1. Kyoto Univ., Yukawa Institute for Theoretical Physics, Kyoto (Japan)
- 2. High Energy Accelerator Research Organization, Tsukuba, Ibaraki (Japan)
Description
We compute the B*Bπ coupling g∞ for the static heavy-light meson using all-to-all propagators. It is shown that low-mode averaging with 100 low-lying eigenmodes indeed significantly improves the signal for the 2-point and 3-point functions for heavy-light meson. Our study suggests that the all-to-all propagator is a very efficient method for the high precision computation of the B*Bπ coupling, especially in unquenched QCD, where the number of configurations is limited. (author)
Additional details
Publishing Information
- Journal Title
- Progress of Theoretical Physics (Kyoto)
- Journal Volume
- 117
- Journal Issue
- 2
- Journal Page Range
- p. 275-303
- ISSN
- 0033-068X
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 38073150
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- B MESONS; CABIBBO ANGLE; CHIRAL SYMMETRY; COUPLING; COUPLING CONSTANTS; DECAY AMPLITUDES; FORM FACTORS; KOBAYASHI-MASKAWA MATRIX; LAGRANGIAN FUNCTION; PERTURBATION THEORY; PIONS; PROPAGATOR; QUANTUM CHROMODYNAMICS
- Descriptors DEC
- AMPLITUDES; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; FIELD THEORIES; FUNCTIONS; HADRONS; MATRICES; MESONS; PARTICLE PROPERTIES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; SYMMETRY; TRANSITION AMPLITUDES
Optional Information
- Notes
- 28 refs., 15 figs., 2 tabs.