TY - JOUR
T1 - Mass shift and width broadening of J/ψ in hot gluonic plasma from QCD sum rules
AU - Morita, Kenji
AU - Lee, Su Houng
PY - 2008/1/14
Y1 - 2008/1/14
N2 - We investigate possible mass shift and width broadening of J/ψ in hot gluonic matter using QCD sum rules. Input values of gluon condensates at finite temperature are extracted from lattice QCD data for the energy density and pressure. Although stability of the moment ratio is achieved only up to T/Tc 1.05, the gluon condensates cause a decrease of the moment ratio, which results in a change of the spectral properties. Using the Breit-Wigner form for the phenomenological side, we find that the mass shift of J/ψ just above Tc can reach maximally 200 MeV and the width can broaden to dozens of MeV.
AB - We investigate possible mass shift and width broadening of J/ψ in hot gluonic matter using QCD sum rules. Input values of gluon condensates at finite temperature are extracted from lattice QCD data for the energy density and pressure. Although stability of the moment ratio is achieved only up to T/Tc 1.05, the gluon condensates cause a decrease of the moment ratio, which results in a change of the spectral properties. Using the Breit-Wigner form for the phenomenological side, we find that the mass shift of J/ψ just above Tc can reach maximally 200 MeV and the width can broaden to dozens of MeV.
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U2 - 10.1103/PhysRevLett.100.022301
DO - 10.1103/PhysRevLett.100.022301
M3 - Article
AN - SCOPUS:40749097759
VL - 100
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 2
M1 - 022301
ER -