Heavy quark expansion parameters from lattice NRQCD (QCDにもとづいたB中間子崩壊の研究)

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概要

• 論文の詳細を見る

• We present a lattice QCD calculation of the heavy quark expansion parameters μ^2_π and μ^2_G for heavy-light mesons and heavy-light-light baryons. The calculation is carried out on a 20^3 × 48 lattice at β = 6.0 in the quenched approximation, using the lattice NRQCD action for heavy quarks. We obtain the parameters μ^2_π and μ^2_G in two different methods: a direct calculation of the matrix elements and an indirect calculation through the mass spectrum, and confirm that the both methods give consistent results. We also discuss an application to the lifetime ratios.

• 素粒子論グループ 素粒子研究編集部の論文
• 2004-06-20

著者

• Tsutsui Naoto

  Kek For Jlqcd Collaboration

• 筒井 直人

  KEK for JLQCD collaboration

関連論文

• Heavy quark expansion parameters from lattice NRQCD (QCDにもとづいたB中間子崩壊の研究)

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