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P(t) Dependence of Transverse Flow in Relativistic Heavy-Ion Collisions

Li, Bao-An; Ko, Che Ming; Li, GQ. (American Physical Society, 1996)

The strength of transverse flow is examined as a function of transverse momentum p(t) using a simple, transversely moving thermal model and a more realistic, relativistic transport model. It is shown that the p(t) dependence ...

High-energy behavior of the nuclear symmetry potential in asymmetric nuclear matter RID A-2398-2009

Chen, LW; Ko, Che Ming; Li, Ba. (American Physical Society, 2005)

Using the relativistic impulse approximation with empirical NN scattering amplitude and the nuclear scalar and vector densities from the relativistic mean-field theory, we evaluate the Dirac optical potential for neutrons ...

K+ production in baryon-baryon and heavy-ion collisions

Li, GQ; Ko, Che Ming; Chung, WS. (American Physical Society, 1998)

Kaon production cross sections in nucleon-nucleon, nucleon-Delta, and Delta-Delta interactions are studied in a boson exchange model. For the latter two interactions, the exchanged pion can be on-mass shell

Hadronic scattering of charmed mesons

Lin, ZW; Ko, Che Ming; Zhang, B. (American Physical Society, 2000)

The scattering cross sections of charm mesons with hadrons such as the pion, rho meson, and nucleon are studied in an effective Lagrangian. In heavy ion collisions, rescattering of produced charm mesons by hadrons affects ...

Partonic coalescence in relativistic heavy ion collisions

Greco, V.; Ko, Che Ming; Levai, P. (American Physical Society, 2003)

Using a covariant coalescence model, we study hadron production in relativistic heavy ion collisions from both soft partons in the quark-gluon plasma and hard partons in minijets. Including transverse flow of soft partons ...

Isospin-dependent pion in-medium effects on the charged-pion ratio in heavy ion collisions

Xu, Jun; Ko, Che Ming; Oh, Yongseok. (American Physical Society, 2010)

Using results from the chiral perturbation theory for the s-wave interaction and the Delta-resonance model for the p-wave interaction of pions with nucleons, we evaluated the spectral functions of pions in asymmetric nuclear ...

Charged particle rapidity distributions at relativistic energies

Lin, ZW; Pal, S.; Ko, Che Ming; Li, Ba; Zhang, B. (American Physical Society, 2001)

Using a multiphase transport model (AMPT), which includes both initial partonic and final hadronic interactions, we study the rapidity distributions of charged particles such as protons, antiprotons, pions, and kaons in ...

Cross section for charmonium absorption by nucleons

Liu, W.; Ko, Che Ming; Lin, ZW. (American Physical Society, 2002)

The cross section for J/psi absorption by nucleons is studied using a gauged SU(4) hadronic Lagrangian but with empirical particle masses, which has been used previously to study the cross sections for J/psi absorption by ...

J/Psi suppression in ultrarelativistic nuclear collisions

Zhang, B.; Ko, Che Ming; Li, Ba; Lin, ZW; Sa, BW. (American Physical Society, 2000)

Using a multiphase transport model, we study the relative importance of J/psi suppression mechanisms due to plasma screening, gluon scattering, and hadron absorption in heavy ion collisions at the Relativistic Heavy Ion ...

Kaon Production from Hot and Dense Matter Formed in Heavy-Ion Collisions

Brown, G. E.; Ko, Che Ming; Wu, Z. G.; Xia, L. H. (American Physical Society, 1991)

In heavy-ion collisions, kaons can be produced from baryon-baryon, meson-baryon, and meson-meson interactions. Simple meson-exchange models are introduced to study kaon production from these processes in the free space. ...