### Abstract

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.

Original language | English |
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Pages (from-to) | 371-381 |

Number of pages | 11 |

Journal | Progress of Theoretical Physics |

Volume | 109 |

Issue number | 3 |

DOIs | |

Publication status | Published - 2003 Mar |

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### All Science Journal Classification (ASJC) codes

- Physics and Astronomy (miscellaneous)

### Cite this

*Progress of Theoretical Physics*,

*109*(3), 371-381. https://doi.org/10.1143/PTP.109.371

}

*Progress of Theoretical Physics*, vol. 109, no. 3, pp. 371-381. https://doi.org/10.1143/PTP.109.371

**Proper construction of the continuum in light-cone QCD sum rules.** / Kim, Hungchong; Lee, Su Houng; Oka, Makoto.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Proper construction of the continuum in light-cone QCD sum rules

AU - Kim, Hungchong

AU - Lee, Su Houng

AU - Oka, Makoto

PY - 2003/3

Y1 - 2003/3

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0038353670&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0038353670&partnerID=8YFLogxK

U2 - 10.1143/PTP.109.371

DO - 10.1143/PTP.109.371

M3 - Article

AN - SCOPUS:0038353670

VL - 109

SP - 371

EP - 381

JO - Progress of Theoretical Physics

JF - Progress of Theoretical Physics

SN - 0033-068X

IS - 3

ER -