Orateur
Prof.
Elşen Veli Veliev
(Department of Physics , Kocaeli University)
Description
In this study, we investigated the temperature dependence of mass and leptonic decay constants for pseudoscalar heavy quarkonium states. We take into account the additional operators in the Wilson expansion at finite temperature and calculate thermal spectral density in the QCD side. Analysis of obtained thermal QCD sum rules shows that at critical temperature, the decay constant decreases approximately 65% and this situation can be considered as a sign of transition to quark-gluon-plasma (QGP) phase. The results at zero temperature are in a good consistency with the existing experimental values as well as predictions of the other nonperturbative approaches.
Auteur principal
Prof.
Elşen Veli Veliev
(Department of Physics , Kocaeli University)
Co-auteurs
Dr
Hayriye Sundu
(Department of Physics , Kocaeli University)
Dr
Kazem Azizi
(Physics Division, Faculty of Arts and Sciences, Dogus University)
Mlle
Nurcan Akşit
(Faculty of Education , Kocaeli University)
