The Thermal Width of the Glueball at Non-Zero Temperature

Details The Thermal Width of the Glueball at Non-Zero Temperature The Thermal Width of the Glueball at Non-Zero Temperature

2002-08-23

arxiv.org/abs/hep-lat/0208043v1

Physics

High Energy Physics

High Energy Physics - Lattice

Talk given at LATTICE 2002, The XX International Symposium on Lattice Field Thoery, Massachusetts, USA, June 24-29, 2002, Latt

Scientific paper

10.1016/S0920-5632(03)01590-1

We use SU(3) anisotropic lattice QCD at quenched level to study the 0++ glueball correlator at various temperature taking into account the possible existence of the thermal width in the ground-state peak. For this purpose, we adopt the Breit-Wigner ansatz for the appropriate fit-function for the lattice data obtained with 5,500-9,900 gauge configurations at each T. The results show the significant thermal width broadening as Gamma(T_c) \sim 300 MeV with a reduction in the peak center as Delta omega_0(T_c) \sim 100 MeV near the critical temperature T_c.

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