Precision study of B^* Bπcoupling for the static heavy-light meson

S. Negishi; H. Matsufuru; T. Onogi

doi:10.1143/ptp.117.275

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arXiv · hep-lat/0612029

Precision study of B^* Bπcoupling for the static heavy-light meson

S. Negishi·H. Matsufuru·T. Onogi

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Abstract

We compute the B^*Bπcoupling \hat{g}_{\infty} for static heavy-light meson using all-to-all propagators. It is shown that low-mode averaging with 100 low-lying eigenmodes indeed improves the signal for the 2-point and 3-point functions for heavy-light meson significantly. Our study suggests that the all-to-all propagator will be a very efficient method for high precision computation of the B^*Bπcoupling especially in unquenched QCD where the number of configurations is limited.

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S. Negishi, H. Matsufuru, T. Onogi. 2007-02-23. Precision study of B^* Bπcoupling for the static heavy-light meson. https://doi.org/10.1143/ptp.117.275

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