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Using the local flavor SU(4) gauge invariance in the limit of vanishing vector meson masses, we extend our previous study of charm meson scattering cross sections by pion and rho meson, which is based only on the pseudoscalarpseudoscalar-vector meson couplings, to include also contributions from the couplings among three vector mesons and among four(More)
Simulation is widely used to predict the performance of complex systems. The main drawback of simulation is that it is slow in execution and the related compute experiments can be very expensive. On the other hand, analytical methods are used to rapidly provide performance estimates, but they are often approximate because of their restrictive assumptions.(More)
An effective hadronic Lagrangian including the charm mesons is introduced to study their interactions in hadronic matter. Using coupling constants that are determined either empirically or by the SU(4) symmetry, we have evaluated the absorption cross sections of J/ψ and the scattering cross sections of D and D∗ by π and ρ mesons.
Heavy quark production in hadronic reactions is reasonably well described by perturbative QCD. However, in heavy ion collisions, final-state interactions may affect the spectra of produced heavy mesons. At the Relativistic Heavy Ion Collider (RHIC), a dense partonic system, often called the quark gluon plasma (QGP), is expected to be formed at the early(More)
We study the effect of energy loss on charm and bottom quarks in high-energy heavy-ion collisions including hadronization, longitudinal expansion and partial thermalization. We consider in detail the detector geometry and single lepton energy cuts of the ALICE and CMS detectors at the Large Hadron Collider (LHC) to show the large suppression of high pT(More)
The cross sections of J/ψ absorption by π and ρ mesons are studied in a meson-exchange model that includes not only the pseudoscalar-pseudoscalarvector-meson couplings but also the three-vector-meson and four-point couplings. We find that the J/ψ absorption cross sections, σπψ and σρψ, are much larger than in a previous study where only(More)
Opposite-sign lepton pairs (ee,eμ and μμ) from open charm decay are proposed as a measure of nuclear shadowing effects. Via an approximate scaling the ratio of the dilepton spectra from p + A to those from pp reflects the shadowing function well. We show that the required measurements are feasible at the Relativistic Heavy ion Collider (RHIC) by considering(More)
We study the effect of energy loss on charm and bottom quarks in highenergy heavy-ion collisions including longitudinal expansion and partial thermalization. We find that high p⊥ heavy quarks are greatly suppressed, and consequently, high-mass dileptons from heavy quark decays are also suppressed. We consider in detail the detector geometry and single(More)