Mott Effect and J/Psi Dissociation at the Quark-Hadron Phase Transition

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dc.creatorBlaschke, D.
dc.creatorBurau, G.
dc.creatorKalinovsky, Yu.
dc.creatorBarnes, T.
dc.date2002-11-19
dc.date2002-11-28
dc.date.accessioned2026-07-07T10:34:36Z
dc.date.available2026-07-07T10:34:36Z
dc.descriptionWe investigate the in-medium modification of pseudoscalar and vector mesons in a QCD motivated chiral quark model by solving the Dyson-Schwinger equations for quarks and mesons at finite temperature for a wide mass range of meson masses, from light (pi, rho) to open-charm (D, D*) states. At the chiral / deconfinement phase transition, the quark-antiquark bound states enter the continuum of unbound states and become broad resonances (the hadronic Mott effect). We calculate the in-medium cross sections for charmonium dissociation due to collisions with light hadrons in a chiral Lagrangian approach, and show that the D and D* meson spectral broadening lowers the threshold for charmonium dissociation by pi and rho meson impact. This leads to a step-like enhancement in the reaction rate. We suggest that this mechanism for enhanced charmonium dissociation may be the physical mechanism underlying the anomalous J/Psi suppression observed by NA50.
dc.description3 pages, 3 figures, uses EPJ style (included), contribution to the Proceedings of the International Conference on Quark Nuclear Physics, June 9 - 14, 2002, Juelich, Germany; 1 figure added, text added
dc.identifierhttps://arxiv.org/abs/nucl-th/0211058
dc.identifierhttp://arxiv.org/abs/nucl-th/0211058
dc.identifierEur.Phys.J.A18:547,2003
dc.identifierdoi:10.1140/epja/i2002-10280-8
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/179531
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleMott Effect and J/Psi Dissociation at the Quark-Hadron Phase Transition
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