Statistical Properties of Charmonium Spectrum and a New Mechanism of J/ψSuppression

Abstract

The statistical properties of Charmonium energy spectrum determined by the Bethe-Salpeter equation are investigated. It is found that the regular motion of the $c\bar{c}$ system can be expected at a small value of color screening mass but the chaotic motion at a large one. It is shown that the level mixing due to color screening serves as a new mechanism resulting in the J/$\psi$ suppression. Moreover, this kind of suppression can occur before the color screening mass reaches its critical value for J/$\psi$ dissociation. It implies that a strong J/$\psi$ suppression is possible in the absence of dissociation of J/$\psi$.

13 latex pages, 2 figures. Phys. Rev. C in press

References in corpus (11)

• Random Matrix Theories in Quantum Physics: Common Concepts
• Emergence of quantum chaos in finite interacting Fermi systems
• J/Psi Suppression in Pb-Pb Collisions: A Hint of Quark-Gluon Plasma Production?
• Charmonium Suppression by Comover Scattering in Pb+Pb Collisions
• The Gluon Propagator at High Temperature: Screening, Improvement and Non-Zero Momenta
• A quantitative reanalysis of charmonium suppression in nuclear collisions
• The Transverse Momentum Dependence of Anomalous $J/\psi$ Suppression
• ${\Psi }^{\prime }/\Psi$ ratio in Nucleus-Nucleus Collisions : a Measure for the Chiral Symmetry Restoration Temperature ?
• J/ψSuppression in Pb+Pb Collisions: A New Look at Hadrons vs. Plasma
• $J/\psi$ suppression in heavy ion collsions and the QCD phase transition
• Relativistic description of J/ψdissociation in hot matter

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