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Dissociation Temperature in QGP and Meson Mass Spectrum Jin-Hee Yoon ( ) Dept. of Physics, Inha University collaboration with C.Y.Wong and H. Crater 06/10/2011Korea Univ. Inha Nuclear Theory Group Introduction J suppression : important signature of QGP Heavy quarkonium states with charm(m c ~1.3 GeV) Why suppressed? Deconfined color charges are screened r D decreases with increasing T When r D < r b, no more bound state Dissociation(melting) occurs [Matsui & Satz, PLB 178 (1986)] 06/10/2011Korea Univ. Inha Nuclear Theory Group Introduction [Satz, NPA 783 (2007)] Heavy Quarkonium is a good probe for the thermal properties of QGP 06/10/2011Korea Univ. Inha Nuclear Theory Group Charmonium Family 06/10/2011Korea Univ. Inha Nuclear Theory Group Bottomonium Family 06/10/2011Korea Univ. Inha Nuclear Theory Group Quarkonium at T=0 m Q >> QCD and quark velocity v