Proper Construction of the Continuum in Light-Cone QCD Sum Rules

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概要

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• A proper method of subtracting the continuum contributions in light-cone QCD sum rules (LCQSR) is demonstrated. Specifically, we calculate the continuum corresponding to a typical operator product expansion (OPE) appearing in LCQSR by properly combining the double dispersion relation with QCD duality. We demonstrate how the subtraction terms can spuriously contribute to the sum rules. In the limit of zero external momentum, removal of the spurious continuum is found to yield the sum rules using the single-variable dispersion relation. The continuum factor constructed in this way differs from that appearing in usual LCQSR. The difference substantially affects the extraction of hadronic parameters from the correlation function involving baryon currents.

• 理論物理学刊行会の論文
• 2003-03-25

著者

• 岡 真

  Department Of Physics Tokyo Institute Of Technology

• OKA makoto

  Department of Physics, Tokyo Institute of Technology

• Lee S

  Institute Of Physics And Applied Physics Yonsci University

• KlM Hungchong

  Institute of Physics and Applied Physics, Yonsci University

• LEE Su

  Institute of Physics and Applied Physics, Yonsci University

• Oka Makoto

  Department Of Physics H-27 Tokyo Institute Of Technology

• Klm Hungchong

  Institute Of Physics And Applied Physics Yonsci University : Department Of Physics Tokyo Institute O

• Lee Su

  Institute Of Bioengineering And Nanotechnology

• KlM Hungchong

  Institute of Physics and Applied Physics, Yonsci University : Department of Physics, Tokyo Institute of Technology

• Kim Hungchong

  Institute of Physics and Applied Physics, Yonsci University

• OKA Makoto

  Department of Pharmacology, Research Laboratories, Dainippon Pharmaceutical Co., Ltd.

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