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- W1966796199 abstract "We investigate the in-medium modification of pseudoscalar and vector mesons within a QCD motivated chiral quark model by solving the Dyson-Schwinger equations for quarks and mesons at finite temperature in the wide mass range from light mesons (π, σρ ) to opencharm mesons (D, D ∗ ). At the chiral/deconfinement phase transition, the quark-antiquark bound states enter the continuum of unbound states and become broad resonances (Mott effect). We calculate the in-medium cross section for charmonium breakup processes due to light hadron impact within a chiral Lagrangian approach and show that the Mott effect for the D-mesons effectively reduces the threshold for charmonium breakup and leads to a step-like behaviour of the reaction rate. This is suggested as an explanation of the anomalous J/ψ suppression phenomenon in the NA50 experiment." @default.
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- W1966796199 date "2003-01-01" @default.
- W1966796199 modified "2023-09-24" @default.
- W1966796199 title "Chiral Symmetry Restoration and Anomalous<i>J</i>/ψ Suppression" @default.
- W1966796199 doi "https://doi.org/10.1143/ptps.149.182" @default.
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