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We study J/psi production at RHIC and LHC energies with both initial production and regeneration. We solve the coupled set of transport equation for the J/psi distribution in phase space and the hydrodynamic equation for evolution of…

Nuclear Theory · Physics 2008-11-26 Li Yan , Pengfei Zhuang , Nu Xu

In this work we study the non-equilibrium dynamics of a quark-gluon plasma, as created in heavy-ion collisions. We investigate how big of a role plasma instabilities can play in the isotropization and equilibration of a quark-gluon plasma.…

High Energy Physics - Phenomenology · Physics 2008-11-18 Bjoern Schenke

The scenario of a collective expansion of matter created in proton-proton (p-p) collisions at the CERN Large Hadron Collider (LHC) is discussed. Assuming a small transverse size and a formation time of 0.1fm/c of the source we observe the…

Nuclear Theory · Physics 2011-03-17 Piotr Bozek

Heavy-flavor particles are excellent probes of the properties of the hot and dense nuclear medium created in the relativistic heavy-ion collisions. Heavy-flavor transport coefficients in the quark-gluon plasma (QGP) stage of the collisions…

Nuclear Theory · Physics 2020-01-10 Weiyao Ke

We investigate the processes leading to phase-space equilibration of parton distributions in nuclear interactions at collider energies. We derive a set of rate equations describing the chemical equilibration of gluons and quarks including…

Nuclear Theory · Physics 2008-11-26 T. S. Biro , E. van Doorn , B. Mueller , M. H. Thoma , X. N. Wang

J/psi production and collective flow is studied with a coalescence model based on phase space distribution of charm quarks from a multi-phase transport model simulation of relativistic heavy ion collisions. Both the yield and the flow of…

Nuclear Theory · Physics 2008-11-26 Bin Zhang

Elliptic flow in heavy-ion collisions is an important signature of a possible de-confinement transition from hadronic phase to partonic phase. In the present work, we use non-extensive statistics, which has been used for transverse momentum…

High Energy Physics - Phenomenology · Physics 2018-03-06 Sushanta Tripathy , Swatantra Kumar Tiwari , Mohammed Younus , Raghunath Sahoo

In this paper, by using a Tsallis-Pareto-type function and the multisource thermal model, the elliptic flow coefficients of particles $\pi ^{\pm }$, $K^{\pm }$, $p+\overline{p}$, $\Lambda +\overline{% \Lambda }$, and $K_{S}^{0}$ produced in…

High Energy Physics - Phenomenology · Physics 2019-08-13 Er-Qin Wang , Yin-Qun Ma , Li-Na Gao , San-Hong Fan

We study the evolution behavior of generalized parton distributions at small longitudinal momentum fraction. Particular attention is paid to the ratio of a generalized parton distribution and its forward limit, to the mixing between quarks…

High Energy Physics - Phenomenology · Physics 2008-11-26 Markus Diehl , Wolfgang Kugler

The hadronic transport model \textsc{art} is extended to include the production and annihilation of deuterons via the reactions $BB \leftrightarrow dM$, where $B$ and $M$ stand for baryons and mesons, respectively, as well as their elastic…

Nuclear Theory · Physics 2009-12-14 Yongseok Oh , Zi-Wei Lin , Che Ming Ko

We study the effects of jet quenching on the hydrodynamical evolution of the quark-gluon plasma (QGP) fluid created in a heavy-ion collision. In jet quenching, a hard QCD parton, before fragmenting into a jet of hadrons, deposits a fraction…

Nuclear Theory · Physics 2009-10-09 A. K. Chaudhuri , Ulrich W. Heinz

We use linear viscous hydrodynamics to describe the energy and momentum deposited by a fast moving parton in a quark gluon plasma. This energy-momentum is in turn used to compute the probability density for the production of soft partons by…

High Energy Physics - Phenomenology · Physics 2016-08-31 Alejandro Ayala , Isabel Dominguez , Jamal Jalilian-Marian , Maria Elena Tejeda-Yeomans

Radial and elliptic flow in non-central heavy ion collisions can constrain the effective Equation of State(EoS) of the excited nuclear matter. To this end, a model combining relativistic hydrodynamics and a hadronic transport code(RQMD…

Nuclear Theory · Physics 2013-05-29 D. Teaney , J. Lauret , E. V. Shuryak

The vacuum parton creation in quickly varying external fields is studied at the time scale of order 1 fm/$c$ typical for the quark-gluon plasma formation and thermalization. To describe the pre-equilibrium evolution of the system the…

Nuclear Theory · Physics 2009-11-10 A. V. Prozorkevich , S. A. Smolyansky , V. V. Skokov , E. E. Zabrodin

Using the newly developed hybrid model VISHNU which connects viscous hydrodynamics with a hadron cascade model, we study the differential and integrated elliptic flow v_2 at different centrality bins for 200 A GeV Au+Au collisions and 2.76…

Nuclear Theory · Physics 2015-03-19 Huichao Song , Steffen A. Bass , Ulrich W. Heinz

Differential elliptic flow and particle spectra are calculated taking into account the finite transport opacity of the gluon plasma produced in Au+Au at Ecm ~ 130 A GeV at RHIC. Covariant numerical solutions of the ultrarelativistic…

Nuclear Theory · Physics 2009-10-09 Denes Molnar , Miklos Gyulassy

Predictions are made for elliptic flow in collisions of polarized deuterons with a heavy nucleus. It is shown that the eccentricity of the initial fireball, evaluated with respect to the deuteron polarization axis perpendicular to the beam…

Nuclear Theory · Physics 2018-11-21 Piotr Bozek , Wojciech Broniowski

I review recent developments in the phenomenological study of the quark-gluon plasma (QGP) transport properties based on a personal selection of results that were presented at Quark Matter 2019. The constraints on the temperature dependence…

Nuclear Theory · Physics 2021-02-03 Chun Shen

We discuss a model for the space-time evolution of ultrarelativistic heavy-ion collisions which employs relativistic hydrodynamics within one region of the forward light-cone, and microscopic transport theory (i.e. UrQMD) in the complement.…

Nuclear Theory · Physics 2009-10-31 A. Dumitru , S. A. Bass , M. Bleicher , H. Stöcker , W. Greiner

Elliptic flow (v_2) of \phi-meson is shown to be a sensitive probe of the partonic collectivity using A Multi Phase Transport (AMPT) model. Within the ambit of the AMPT model with partonic interactions (string melting version), the…

Nuclear Experiment · Physics 2015-06-12 Md. Nasim , Bedangadas Mohanty , Nu Xu