Thermal modifications of the heavy axial vector mesons properties
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KünyeVeliev, E. V., Azizi, K., Sundu, H., & Kaya, G. (2012). Thermal modifications of the heavy axial vector mesons properties. In Proceedings of Science (pp. 1-3). Trieste, Italy: SISSA.
We investigate the properties of the heavy axial vector χb1 and χc1 quarkonia at finite temperature. Taking into account the thermal spectral density as well as additional operators coming up at finite temperature and perturbative two-loop order corrections to the correlation function, we obtained the thermal QCD sum rules for considering particles. It is observed that the masses and decay constants almost remain unchanged with respect to the variation of the temperature up to T ≈ 100MeV, however after this point, the decay constants decrease sharply and approach approximately to zero at critical temperature. This situation may be interpreted as a signal for deconfinement phase transition and our results at zero temperature are in good consistency with the existing experimental values.