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Title: Valid QCD sum rules for vector mesons in nuclear matter

Abstract

QCD sum rules for vector mesons ({rho}, {omega}, {phi}) in nuclear matter are reexamined with an emphasis on the reliability of various sum rules. Monitoring the continuum contribution and the convergence of the operator product expansion plays a crucial role in determining the validity of a sum rule. The uncertainties arising from less than precise knowledge of the condensate values and other input parameters are analyzed via a Monte Carlo error analysis. Our analysis leaves no doubt that vector-meson masses decrease with increasing density. This resolves the current debate over the behavior of the vector-meson masses and the sum rules to be used in extracting vector meson properties in nuclear matter. We find a ratio of {rho}-meson masses of {ital m}{sub {rho}}{sup *}/{ital m}{sub {rho}}=0.78{plus_minus}0.08 at nuclear matter saturation density.

Authors:
;  [1]
  1. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)
Publication Date:
OSTI Identifier:
132956
Resource Type:
Journal Article
Journal Name:
Physical Review, C
Additional Journal Information:
Journal Volume: 52; Journal Issue: 6; Other Information: PBD: Dec 1995
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; NUCLEAR MATTER; VECTOR MESONS; SUM RULES; ERRORS; MASS; MONTE CARLO METHOD; OPERATOR PRODUCT EXPANSION; QUANTUM CHROMODYNAMICS

Citation Formats

Jin, X., and Leinweber, D.B. Valid QCD sum rules for vector mesons in nuclear matter. United States: N. p., 1995. Web. doi:10.1103/PhysRevC.52.3344.
Jin, X., & Leinweber, D.B. Valid QCD sum rules for vector mesons in nuclear matter. United States. doi:10.1103/PhysRevC.52.3344.
Jin, X., and Leinweber, D.B. Fri . "Valid QCD sum rules for vector mesons in nuclear matter". United States. doi:10.1103/PhysRevC.52.3344.
@article{osti_132956,
title = {Valid QCD sum rules for vector mesons in nuclear matter},
author = {Jin, X. and Leinweber, D.B.},
abstractNote = {QCD sum rules for vector mesons ({rho}, {omega}, {phi}) in nuclear matter are reexamined with an emphasis on the reliability of various sum rules. Monitoring the continuum contribution and the convergence of the operator product expansion plays a crucial role in determining the validity of a sum rule. The uncertainties arising from less than precise knowledge of the condensate values and other input parameters are analyzed via a Monte Carlo error analysis. Our analysis leaves no doubt that vector-meson masses decrease with increasing density. This resolves the current debate over the behavior of the vector-meson masses and the sum rules to be used in extracting vector meson properties in nuclear matter. We find a ratio of {rho}-meson masses of {ital m}{sub {rho}}{sup *}/{ital m}{sub {rho}}=0.78{plus_minus}0.08 at nuclear matter saturation density.},
doi = {10.1103/PhysRevC.52.3344},
journal = {Physical Review, C},
number = 6,
volume = 52,
place = {United States},
year = {1995},
month = {12}
}