Precision Study of B*Bπ Coupling for the Static Heavy-Light Meson(Particles and Fields)

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概要

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• 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.

• 理論物理学刊行会の論文
• 2007-02-25

著者

• Onogi Tetsuya

  Yukawa Institute For Theoretical Physics Kyoto University

• 大野木 哲也

  京都大学

• Hideo Matsufuru

  High Energy Accelerator Research Organization (kek)

• 大野木 哲也

  Yukawa Institute For Theoretical Physics Kyoto University

• NEGISHI Shunsuke

  Yukawa Institute for Theoretical Physics, Kyoto University

• MATSUFURU Hideo

  High Energy Accelerator Research Organization (KEK)

• Negishi Shunsuke

  Yukawa Institute For Theoretical Physics Kyoto University

• Matsufuru Hideo

  High Energy Accelerator Research Organization

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