Relativistic Heavy Quarks on the Lattice

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概要

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• Lattice QCD should allow quantitative predictions for the heavy quark physics from first principles. Up to now, however, most approaches have based on the nonrelativistic effective theory, with which the continuum limit cannot be taken. In this paper we investigate feasibility of relativistic approaches to the heavy quark physics in lattice QCD. We first examine validity of the idea that the use of the anisotropic lattice could be advantageous to control the m_Qa corrections. Our perturbativc calculation, however, reveals that this is not true. We instead consider a relativistic O(a) improvement to handle heavy quarks on the isotropic lattice, which is eventually found to be the Fermilab quark action with a special choice of parameters. We explain how power corrections of m_Qa can be avoided and remaining uncertainties are reduced to be of order (aA_<QCD>)^2.

• 2003-03-25

著者

• Aoki Sinya

  Institute Of Physics University Of Tsukuba

• KURAMASHl Yoshinobu

  Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK)

• TOMINAGA Shin-ichi

  Center for Computational Physics, University of Tsukuba

• Kuramashi Yoshinobu

  Institute Of Particle And Nuclear Studies High Energy Accelerator Research Organization(kek)

• Tominaga Shin-ichi

  Center For Computational Physics University Of Tsukuba

• Kuramashl Yoshinobu

  Institute Of Particle And Nuclear Studies High Energy Accelerator Research Organization (kek)

• Aoki Sinya

  Institute of Physics, University of Tsukuba

関連論文

• Hadroproduction of DD^^- Pairs in the Interaction of 350 GeV /c π^- Mesons with Nuclei : Progress Letters
• Charm Production by 350 GeV/c π^- Interactions in Nuclear Emulsion : Progress Letters
• Observation of the Muonic Decay, D^±_S → μ^±ν_μ : Particles and Fields
• Relativistic Heavy Quarks on the Lattice
• Production of Two Single-Λ Hypernuclei by Ξ^- Capture : Particles and Fields
• Direct Observation of Sequential Weak Decay of a Double Hypernucleus : Nuclear Physics
• Evidence of Weak Decay of Heavy Double Hypernuclei
• Field Theories on the Lattice
• Recent developments in finite temperature lattice QCD(Status report)(Recent Developments in QCD and Hadron Physics)
• On the Phase Structure of QCD with Wilson Fermions
• Fermion Interactions in the Wilson-Yukawa Approach for Lattice Chiral Gauge Theories : Invited Papers
• The Recovery of the Chiral Symmetry in Lattice Gross-Neveu Model : Particles and Fields
• Phenomenological Application in Lattice QCD(SUMMER INSTITUTE 2002)

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