scholarly journals Production of charm quarks in a parton cascade model for relativistic heavy ion collisions at sNN=200 GeV

2017 ◽  
Vol 96 (6) ◽  
Author(s):  
Dinesh K. Srivastava ◽  
Steffen A. Bass ◽  
Rupa Chatterjee
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Cascade Model ◽  
Relativistic Heavy Ion Collisions ◽  
Charm Quarks ◽  
Ion Collisions ◽  
Parton Cascade ◽  
200 Gev

scholarly journals A Systematic Study of Magnetic Field in Relativistic Heavy-Ion Collisions in the RHIC and LHC Energy Regions

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Yang Zhong ◽  
Chun-Bin Yang ◽  
Xu Cai ◽  
Sheng-Qin Feng
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Heavy Ion Collisions ◽  
Field Model ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Collision Time ◽  
Ion Collisions ◽  
200 Gev ◽  
Magnetic Field Model

The features of magnetic field in relativistic heavy-ion collisions are systematically studied by using a modified magnetic field model in this paper. The features of magnetic field distributions in the central point are studied in the RHIC and LHC energy regions. We also predict the feature of magnetic fields at LHCsNN=900, 2760, and 7000 GeV based on the detailed study at RHICsNN=62.4, 130, and 200 GeV. The dependencies of the features of magnetic fields on the collision energies, centralities, and collision time are systematically investigated, respectively.

scholarly journals Jet structure in heavy ion collisions

2015 ◽  
Vol 24 (11) ◽  
pp. 1530012 ◽  
Author(s):  
J.-P. Blaizot ◽  
Y. Mehtar-Tani
Keyword(s):  
Heavy Ion Collisions ◽  
Turbulent Transport ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Jet Quenching ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions ◽  
Parton Cascade ◽  
Probabilistic Nature ◽  
Jet Structure

We review recent theoretical developments in the study of the structure of jets that are produced in ultra relativistic heavy ion collisions. The core of the review focusses on the dynamics of the parton cascade that is induced by the interactions of a fast parton crossing a quark–gluon plasma. We recall the basic mechanisms responsible for medium induced radiation, underline the rapid disappearance of coherence effects, and the ensuing probabilistic nature of the medium induced cascade. We discuss how large radiative corrections modify the classical picture of the gluon cascade, and how these can be absorbed in a renormalization of the jet quenching parameter [Formula: see text]. Then, we analyze the (wave)-turbulent transport of energy along the medium induced cascade, and point out the main characteristics of the angular structure of such a cascade. Finally, color decoherence of the in-cone jet structure is discussed. Modest contact with phenomenology is presented towards the end of the review.

scholarly journals Anisotropic (v1 and v2) Flow in Relativistic Heavy-Ion Collisions at Energies between 4 GeV and 200 GeV

2018 ◽  
Vol 191 ◽  
pp. 05004
Author(s):  
L.V. Bravina ◽  
Yu. Kvasiuk ◽  
S.Yu. Sivoklokov ◽  
O. Vitiuk ◽  
E.E. Zabrodin
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Relativistic Heavy Ion Collisions ◽  
High Energies ◽  
Ion Collisions ◽  
200 Gev ◽  
Basic Features ◽  
String Models ◽  
Freeze Out

Basic features of directed and elliptic flows of identified hadrons in heavy-ion collisions at intermediate and high energies are considered within two transport string models, UrQMD and QGSM. Both models indicate changing of the sign of proton directed flow at midrapidity from antiflow to normal flow with decreasing energy of collisions. The origin of this effect is traced to hadron rescattering in baryon-rich remnants of the colliding nuclei. To distinguish the effect of rescattering from the flow softening caused by creation of quark-gluon plasma one has to compare heavy-ion and light-ion collisions at the same energy. Both directed and elliptic flows at midrapidity are formed within t = 10-12 fm/c. The differences in the development of elliptic flows of mesons and baryons are found at high energies. These differences can be explained by dissimilar freeze-out conditions, thus suggesting simultaneous study of particle collective flow and freeze-out.

scholarly journals Elliptic flow of hadrons in equal-velocity quark combination mechanism in relativistic heavy-ion collisions

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Jun Song ◽  
Hai-hong Li ◽  
Feng-lan Shao
Keyword(s):  
Heavy Ion Collisions ◽  
Charm Quark ◽  
Elliptic Flow ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Simple Relationship ◽  
Charm Quarks ◽  
Strange Quarks ◽  
Ion Collisions ◽  
Using Data

AbstractWe apply a quark combination model with equal-velocity combination (EVC) approximation to study the elliptic flow ($$v_{2}$$ v 2 ) of hadrons in heavy-ion collisions in a wide collision energy range ($$\sqrt{s_{NN}}=$$ s NN = 27–5020 GeV). Utilizing the simple relationship between $$v_{2}$$ v 2 of hadrons and those of quarks under EVC, we find that $$v_{2}$$ v 2 of up/down quarks obtained by experimental data of proton is consistent with that obtained by data of $$\varLambda $$ Λ and $$\varXi $$ Ξ . $$v_{2}$$ v 2 of strange quarks obtained by data of $$\varOmega $$ Ω is consistent with that obtained by data of $$\varLambda $$ Λ and $$\varXi $$ Ξ , and at RHIC energies it is also consistent with that obtained by data of $$\phi $$ ϕ . This means that $$v_{2}$$ v 2 of these hadrons have a common quark-level source. Using data of $$D^0$$ D 0 , we obtain $$v_{2}$$ v 2 of charm quarks with $$p_T\lesssim 6$$ p T ≲ 6 GeV/c. We find that under EVC charm quark dominates $$v_{2}$$ v 2 of D mesons at low $$p_{T}$$ p T but light-flavor quarks significantly contribute to $$v_{2}$$ v 2 of D mesons in the range $$3\lesssim p_{T}\lesssim 8$$ 3 ≲ p T ≲ 8 GeV/c. We predict $$v_{2}$$ v 2 of charmed baryons $$\varLambda _{c}^{+}$$ Λ c + and $$\varXi _{c}^{0}$$ Ξ c 0 which show a significant enhancement at intermediate $$p_{T}$$ p T due to the double contribution of light-flavor quarks. The properties of the obtained quark $$v_{2}$$ v 2 under EVC are studied and a regularity for $$v_{2}$$ v 2 of quarks as the function of $$p_{T}/m$$ p T / m is found.

J/ψ PRODUCTION FROM CHARM COALESCENCE IN RELATIVISTIC HEAVY ION COLLISIONS

2007 ◽  
Vol 16 (07n08) ◽  
pp. 2061-2065
Author(s):  
BIN ZHANG
Keyword(s):  
Heavy Ion Collisions ◽  
D Meson ◽  
Charm Quark ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Relativistic Heavy Ion Collisions ◽  
Final State ◽  
Charm Quarks ◽  
Ion Collisions ◽  
Multi Phase

J/ψ production is closely related to the production of the strongly interacting Quark-Gluon Plasma (sQGP) in relativistic heavy ion collisions. To study the effects of charm quark dynamics on J/ψ production, the phase space distributions of charm and anti-charm quarks are generated using A Multi-Phase Transport (AMPT) model. These charm quarks then coalesce into J/ψ particles. The production and flow of J/ψ show strong sensitivity to final state charm interactions. The results are compared to charm quark and D meson results from the AMPT model and recent predictions from other models.

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