### Abstract

We formulate a QCD sum rule to find the three-momentum (q) dependence of the peak position of the vector meson spectral density in the nuclear medium. For both the longitudinal and transverse polarization direction of the vector meson with respect to q, we find less than a 2% (0.1%) shift of the peak position in nuclear matter density and at [Formula Presented] for the ρ,ω (φ) mesons. This justifies neglecting the three-momentum dependence and the polarization effect when implementing the universal scaling laws of the vector mesons in understanding the dilepton spectrum in the [Formula Presented] and [Formula Presented] reactions.

Original language | English |
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Pages (from-to) | 927-930 |

Number of pages | 4 |

Journal | Physical Review C - Nuclear Physics |

Volume | 57 |

Issue number | 2 |

DOIs | |

Publication status | Published - 1998 Jan 1 |

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### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

### Cite this

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*Physical Review C - Nuclear Physics*, vol. 57, no. 2, pp. 927-930. https://doi.org/10.1103/PhysRevC.57.927

**Vector mesons in the nuclear medium with a finite three-momentum.** / Lee, Su Houng.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Vector mesons in the nuclear medium with a finite three-momentum

AU - Lee, Su Houng

PY - 1998/1/1

Y1 - 1998/1/1

N2 - We formulate a QCD sum rule to find the three-momentum (q) dependence of the peak position of the vector meson spectral density in the nuclear medium. For both the longitudinal and transverse polarization direction of the vector meson with respect to q, we find less than a 2% (0.1%) shift of the peak position in nuclear matter density and at [Formula Presented] for the ρ,ω (φ) mesons. This justifies neglecting the three-momentum dependence and the polarization effect when implementing the universal scaling laws of the vector mesons in understanding the dilepton spectrum in the [Formula Presented] and [Formula Presented] reactions.

AB - We formulate a QCD sum rule to find the three-momentum (q) dependence of the peak position of the vector meson spectral density in the nuclear medium. For both the longitudinal and transverse polarization direction of the vector meson with respect to q, we find less than a 2% (0.1%) shift of the peak position in nuclear matter density and at [Formula Presented] for the ρ,ω (φ) mesons. This justifies neglecting the three-momentum dependence and the polarization effect when implementing the universal scaling laws of the vector mesons in understanding the dilepton spectrum in the [Formula Presented] and [Formula Presented] reactions.

UR - http://www.scopus.com/inward/record.url?scp=0001462075&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001462075&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.57.927

DO - 10.1103/PhysRevC.57.927

M3 - Article

AN - SCOPUS:0001462075

VL - 57

SP - 927

EP - 930

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 2

ER -