Mass Shift and Width Broadening of J/{psi} in Hot Gluonic Plasma from QCD Sum Rules

Journal Article · Fri Jan 18 04:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.022301· OSTI ID:21020934

Morita, Kenji; Lee, Su Houng ^[1]

---

1. Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749 (Korea, Republic of)

We investigate possible mass shift and width broadening of J/{psi} in hot gluonic matter using QCD sum rules. Input values of gluon condensates at finite temperature are extracted from lattice QCD data for the energy density and pressure. Although stability of the moment ratio is achieved only up to T/T{sub c}{approx_equal}1.05, the gluon condensates cause a decrease of the moment ratio, which results in a change of the spectral properties. Using the Breit-Wigner form for the phenomenological side, we find that the mass shift of J/{psi} just above T{sub c} can reach maximally 200 MeV and the width can broaden to dozens of MeV.

• OSTI ID: 21020934
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 100; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BREIT-WIGNER FORMULA
ENERGY DENSITY
GLUON CONDENSATION
J PSI-3097 MESONS
MEV RANGE 10-100
MEV RANGE 100-1000
PARTICLE WIDTHS
PLASMA
QUANTUM CHROMODYNAMICS
SUM RULES