The thermal width of the glueball at non-zero temperature

✍ Scribed by Noriyoshi Ishii; Hideo Suganuma; Hideo Matsufuru

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 279 KB
• Volume: 119
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)01590-1

✦ Synopsis

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 r(Z',) N 300 MeV with a reduction in the peak center as Awo(Z',) N 100 MeV near the critical temperature T,.