Vector mesons at finite temperature and QCD sum rules
Nuclear Theory
2015-03-14 v2 High Energy Physics - Phenomenology
Abstract
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 a1 mesons at nonvanishing temperature and hence to study the tendency toward chiral symmetry restoration. The parity-mixing ansatz for the rho and a1 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.
Cite
@article{arxiv.1004.1059,
title = {Vector mesons at finite temperature and QCD sum rules},
author = {Youngshin Kwon and Chihiro Sasaki and Wolfram Weise},
journal= {arXiv preprint arXiv:1004.1059},
year = {2015}
}
Comments
9 pages, 6 figures