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Prog. Theor. Phys. Supplement No.151 (2003) pp. 166-170

Thermal Width Broadening of the 0⁺⁺ Glueball Spectrum near T_c

Noriyoshi Ishii,¹ Hideo Suganuma² and Hideo Matsufuru³

¹Radiation Laboratory, RIKEN (The Institute of Physical and Chemical Research), Wako 351-0198, Japan
²Faculty of Science, Tokyo Institute of Technology, Tokyo 152-8552, Japan
³Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan

(Received March 14, 2003)

Abstract:

We study the 0⁺⁺ glueball correlator constructed with SU(3) anisotropic quenched lattice QCD at various temperatures taking into account the possible existence of the thermal width in the ground-state peak. For this purpose, we adopt the Breit-Wigner ansatz, analysing the lattice data obtained with 5,500–9,900 gauge configurations at each T. The results indicate the significant thermal width broadening as Γ(T_c) ∼300 MeV with a reduction in the peak center as Δω₀(T_c) ∼100 MeV in the vicinity of the critical temperature T_c.

URL : http://ptp.ipap.jp/link?PTPS/151/166/
DOI : 10.1143/PTPS.151.166

[ Full Text PDF : FREE ACCESS (103K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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