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The anisotropy associated with the initial dipole asymmetry in heavy ion collisions is studied via the two-particle relative azimuthal azimuthal angle (\Delta\phi=\phi^a-\phi^b) correlations, within a multi-phase transport model. For a…

Nuclear Theory · Physics 2013-09-17 Jiangyong Jia , Sooraj K. Radhakrishnan , Soumya Mohapatra

The rapidity dependence of two-particle momentum correlations can be used to probe the viscosity of the liquid produced in heavy nuclei collisions at RHIC. We reexamine this probe in light of the recent experimental analyses of the…

Nuclear Theory · Physics 2015-05-28 Monika Sharma , Claude Pruneau , Sean Gavin , Jun Takahashi , R. Derradi de Souza , T. Kodama

A Multi-Phase Transport (AMPT) model is used to investigate the efficacy of several flow observables to constrain the initial-state deformation of the Uranium nuclei in U$+$U collisions at nucleon-nucleon center-of-mass energy…

Nuclear Theory · Physics 2024-03-04 Niseem Magdy

This article reviews recent advances in our understanding of the experimental aspects of jet-quenching and correlations in relativistic heavy-ion collisions at RHIC and LHC. Emphasis is put on correlation measurements, namely jet-like…

Nuclear Experiment · Physics 2023-07-19 Fuqiang Wang

Two-particle correlations in pPb collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV are studied as a function of the pseudorapidity separation (Delta eta) of the particle pair at small relative azimuthal angle (abs(Delta phi)…

Nuclear Experiment · Physics 2017-10-02 CMS Collaboration

Using an isospin-dependent transport model, we study the effects of nuclear symmetry energy on two-nucleon correlation functions in heavy ion collisions induced by neutron-rich nuclei. We find that the density dependence of the nuclear…

Nuclear Theory · Physics 2009-11-07 Lie-Wen Chen , Vincenzo Greco , Che Ming Ko , Bao-An Li

Centrality, as a geometrical property of the collision, is crucial for the physical interpretation of nucleus-nucleus and proton-nucleus experimental data. However, it cannot be directly accessed in event-by-event data analysis. Common…

Data Analysis, Statistics and Probability · Physics 2017-03-24 Igor Altsybeev , Vladimir Kovalenko

The charge-dependent realistic nuclear Hamiltonian for a nucleus, composed of neutrons and protons, can be successfully approximated by a charge-independent one. The parameters of such a Hamiltonian, i.e., the nucleon mass and the NN…

Nuclear Theory · Physics 2009-10-31 G. P. Kamuntavicius , P. Navratil , B. R. Barrett , G. Sapragonaite , R. K. Kalinauskas

Di-hadron and jet-hadron correlations are commonly used in relativistic heavy ion collisions to study the soft component of jets in a quark gluon plasma. There is a large correlated background which is described by the Fourier decomposition…

Nuclear Experiment · Physics 2018-05-31 Christine Nattrass , Takahito Todoroki

It is an experimental fact that multi-particle correlations in the final states of high-energy nucleus-nucleus collisions are sensitive to collective correlations of nucleons in the wave functions of the colliding nuclei. Here, I show that…

Nuclear Theory · Physics 2024-01-11 Giuliano Giacalone

We formulate a Lattice Hamiltonian approach for the modeling of intermediate energy heavy ion collisions. After verifying stationary ground state solutions, we implement this in a calculation of nuclear stopping power and compare our…

Nuclear Theory · Physics 2009-10-31 Declan Persram , Charles Gale

From the correlation structure of transverse momentum $p_t$ in relativistic nuclear collisions we observe for the first time temperature/velocity structure resulting from low-$Q^2$ partons. Our novel analysis technique does not invoke an…

High Energy Physics - Phenomenology · Physics 2009-11-11 Thomas A Trainor , Duncan J Prindle

During the 2008 run the Relativistic Heavy Ion Collider (RHIC) at the Brookhaven Nation Laboratiory (BNL), NY, provided high luminosity in both p+p and d+Au collisions at $\sqrt{s_{NN}}=200\mathrm{\,GeV}$. Electromagnetic calorimeter…

Nuclear Experiment · Physics 2011-02-07 Ermes Braidot

A key open question in the study of multi-particle production in high-energy $pp$ collisions is the relationship between the "ridge'' - observed azimuthal correlations between particles in the underlying event that extend over all…

Nuclear Experiment · Physics 2023-12-06 ATLAS Collaboration

Mixed harmonic charge dependent azimuthal correlations at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV were measured with the ALICE detector at the LHC. A clear charge dependence for a series of correlations is observed…

Nuclear Experiment · Physics 2019-08-13 Yasuto Hori

We discuss the information that can be deduced from a measurement of particle (hyperon or vector meson) polarization in ultrarelativistic nuclear collisions. We describe the sensitivity of polarization to initial conditions, hydrodynamic…

Nuclear Theory · Physics 2008-11-26 Barbara Betz , Miklos Gyulassy , Giorgio Torrieri

Two-particle azimuthal correlations have been shown to be a powerful probe for extracting novel features of the interaction between hard scattered partons and the medium produced in Au+Au collisions at RHIC. At intermediate $p_T$, 2-5GeV/c,…

Nuclear Experiment · Physics 2008-11-26 Anne Sickles

Triple differential cross sections of pions in heavy ion collisions at 1 GeV/nucl. are studied with the IQMD model. After discussing general properties of $\Delta$ resonance and pion production we focus on azimuthal correlations: At…

Nuclear Theory · Physics 2016-09-08 S. A. Bass , C. Hartnack , H. Stoecker , W. Greiner

In this work, we study the two-particle correlations regarding a peripheral tube model. From our perspective, the main characteristics of the observed two-particle correlations are attributed to the multiplicity fluctuations and the locally…

Nuclear Theory · Physics 2019-03-27 Dan Wen , Wagner M. Castilho , Kai Lin , Wei-Liang Qian , Yogiro Hama , Takeshi Kodama

Two-particle azimuthal correlations reveal broadened and softened away-side correlations. Several different physics mechanisms are possible: large angle gluon radiation, deflected jets, and conical flow or Cerenkov radiation. Three-particle…

Nuclear Experiment · Physics 2008-11-26 Jason Glyndwr Ulery