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arXiv · hep-lat/0312040

Properties of Thermal Glueballs

Noriyoshi Ishii·Hideo Suganuma
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Abstract

We study the properties of the 0++ glueball at finite temperature using SU(3) quenched lattice QCD. We find a significant thermal effects near T_c. We perform the χ^2 fit analyses adopting two Ansaetze for the spectral function, i.e., the conventional narrow-peak Ansatz and an advanced Breit-Wigner Ansatz. The latter is an extension of the former, taking account of the appearance of the thermal width at T>0. We also perform the MEM analysis. These analyses indicate that the thermal effect on the glueball is a significant thermal-width broadening Γ(T_c) \sim 300 MeV together with a modest reduction in the peak center Δω_0(T_c) \sim 100 MeV.

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Noriyoshi Ishii, Hideo Suganuma. 2003-12-27. Properties of Thermal Glueballs. https://doi.org/10.1142/9789812702845_0038

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