In-Medium QCD Sum Rules for {rho}-Meson and Chiral Scale

Journal Article · Fri Oct 21 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3647439· OSTI ID:21611965

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

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1. Department of Physics, Yonsei University, Seoul 120-749 (Korea, Republic of)
2. Physik-Department, Theoretische Physik, Technische Universitaet Muenchen, D-85747 Garching (Germany)

In this talk, chiral scale, 4{pi}f{sub {pi}{approx}1} GeV, was introduced as an indicator of partial restoration of chiral symmetry at finite density or temperature, rather than the argument between mass shift and collisional broadening. We use the finite energy sum rules to determine the chiral scale identified with the separation scale of the low-energy resonance part from the high-energy continuum part of {rho}-meson spectral function. In this framework, in-medium {rho}-meson mass should be discussed in terms of the first two moments of the spectral function.

• OSTI ID: 21611965
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1388; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BOSONS
CHIRAL SYMMETRY
CHIRALITY
ELEMENTARY PARTICLES
ENERGY RANGE
EQUATIONS
FIELD THEORIES
FUNCTIONS
GEV RANGE
HADRONS
MATTER
MESONS
NUCLEAR MATTER
NUCLEAR TEMPERATURE
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RHO-770 MESONS
SPECTRAL FUNCTIONS
SUM RULES
SYMMETRY
VECTOR MESONS