Publications [#304508] of Steffen A. Bass

Papers Published
  1. Spieles, C; Vogt, R; Gerland, L; Bass, SA; Bleicher, M; Stöcker, H; Greiner, W, Dissociation of J/ψ by mesons: Thermal versus nonequilibrium scenario, Journal of Physics G: Nuclear and Particle Physics, vol. 25 no. 12 (1999), pp. 2351-2359 [doi] .

    We study J/ψ reaction kinetics in hadronic environments. The validity of a thermal meson gas ansatz is tested by confronting it with an alternative, nonequilibrium scenario. Heavy-ion collisions are simulated in the framework of the microscopic transport model, the ultrarelativistic quantum molecular dynamics model, taking into account the production of charmonium states through hard parton-parton interactions and subsequent rescattering with secondary hadrons assuming constant dissociation cross sections. The thermal gas and microscopic transport scenarios are shown to be very dissimilar. Estimates of J/ψ survival probabilities based on thermal models of co-mover interactions in heavy-ion collisions are therefore questionable.