Vector mesons at finite temperature and QCD sum rules

Journal Article · Tue Jun 15 04:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.81.065203· OSTI ID:21388633

Kwon, Youngshin; Weise, Wolfram ^[1]; Sasaki, Chihiro ^[2]

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1. Physik-Department, Technische Universitaet Muenchen, D-85747 Garching (Germany)
2. Frankfurt Institute for Advanced Studies, D-60438 Frankfurt am Main (Germany)

Finite energy sum rules for vector and axial-vector currents are derived in a thermal medium to provide constraints for the spectral behavior of rho and a{sub 1} mesons at nonvanishing temperature and hence to study the tendency toward chiral symmetry restoration. The parity-mixing ansatz for the rho and a{sub 1} spectra, including finite widths, is investigated as a function of temperature. Characteristic differences between vector and axial-vector channels are discussed with regard to the implementation of the chiral-symmetry-breaking scale, 4pi times the pion decay constant, in the sum-rule approach.

• OSTI ID: 21388633
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
AXIAL-VECTOR CURRENTS
BOSONS
CHIRAL SYMMETRY
CURRENTS
DECAY
ELEMENTARY PARTICLES
EQUATIONS
FIELD THEORIES
HADRONS
IMPLEMENTATION
MESONS
MIXING
PARITY
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
SPECTRA
SUM RULES
SYMMETRY
SYMMETRY BREAKING
TEMPERATURE DEPENDENCE
VECTOR CURRENTS
VECTOR MESONS