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

Research output: Contribution to journalArticle

29 Citations (Scopus)

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 languageEnglish
Pages (from-to)927-930
Number of pages4
JournalPhysical Review C - Nuclear Physics
Volume57
Issue number2
DOIs
Publication statusPublished - 1998 Jan 1

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vector mesons
momentum
polarization
scaling laws
sum rules
mesons
quantum chromodynamics
shift

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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

In: Physical Review C - Nuclear Physics, Vol. 57, No. 2, 01.01.1998, p. 927-930.

Research output: Contribution to journalArticle

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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.

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