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We discuss the present collective flow signals for the phase transition to quark-gluon plasma (QGP) and the collective flow as a barometer for the equation of state (EoS). A study of Mach shocks induced by fast partonic jets propagating…

Nuclear Theory · Physics 2008-11-26 Horst Stöcker , Barbara Betz , Philip Rau

A critical discussion of the present signals for the phase transition to quark-gluon plasma (QGP) is given. Since hadronic rescattering models predict much larger flow than observed from 1 to 50 A GeV laboratory bombarding energies, this…

High Energy Physics - Theory · Physics 2008-11-26 Barbara Betz , Philip Rau , Horst Stöcker

In jet quenching, a hard QCD parton, before fragmenting into a jet of hadrons, deposits a fraction of its energy in the medium, leading to suppressed production of high-$p_T$ hadrons. The process can generate shock waves. We study the…

Nuclear Theory · Physics 2008-11-26 A. K. Chaudhuri

MMedium excitation by jet shower propagation inside a quark-gluon plasma is studied within a linear Boltzmann transport and a multiphase transport model. Contrary to the naive expectation, it is the deflection of both the jet shower and the…

Nuclear Theory · Physics 2011-02-01 Han-Lin Li , Fu-Ming Liu , Guo-Liang Ma , Xin-Nian Wang , Yan Zhu

We study multiple scatterings of jets on constituents of quark gluon plasma and introduce energy--energy correlations to quantify their effects. The effects from a longitudinally expanding plasma on medium as well as high energy jets are…

High Energy Physics - Phenomenology · Physics 2009-10-28 Jicai Pan , Charles Gale

In a framework of a multi-phase transport model with both partonic and hadronic interactions, azimuthal correlations between trigger particles and associated scattering particles in Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV/$c$ have…

Nuclear Theory · Physics 2007-05-23 Y. G. Ma , G. L. Ma , S. Zhang , X. Z. Cai , J. H. Chen , Z. J. He , H. Z. Huang , J. L. Long , W. Q. Shen , X. H. Shi , J. X. Zuo

Measurements of angular correlations of hadrons with a (semi-)hard trigger hadron in heavy-ion collisions at RHIC show large angular structures opposite to the trigger which were a priori unexpected. These away side large angle correlations…

High Energy Physics - Phenomenology · Physics 2008-11-26 Thorsten Renk , Jorg Ruppert

We study the propagation of sound-like perturbations created by a jet moving with supersonic velocity through the quark-gluon-plasma created in heavy-ion reactions within the model MACE (MAch Cone Evolution). Predictions for heavy-ion…

Nuclear Theory · Physics 2007-10-09 Bjoern Baeuchle , Laszlo Csernai , Horst Stoecker

The time evolution of Mach-like structure (the splitting of the away side peak in di-hadron $\Delta\phi$ correlation) is presented in the framework of a dynamical partonic transport model. With the increasing of the lifetime of partonic…

Nuclear Theory · Physics 2007-05-23 G. L. Ma , S. Zhang , Y. G. Ma , X. Z. Cai , J. H. Chen , Z. J. He , H. Z. Huang , J. L. Long , W. Q. Shen , X. H. Shi , C. Zhong , J. X. Zuo

Energy and momentum lost by hard jets propagating through hot and dense nuclear matter have to be redistributed in the medium. It has been conjectured that collective sound modes are excited. Those lead to Mach cone nuclear shock waves in…

High Energy Physics - Phenomenology · Physics 2009-01-16 Jorg Ruppert , Thorsten Renk

We present a study of three-particle correlations among a trigger particle and two associated particles in Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV using a multi-phase transport model (AMPT) with both partonic and hadronic…

Nuclear Theory · Physics 2008-11-26 G. L. Ma , Y. G. Ma , S. Zhang , X. Z. Cai , J. H. Chen , Z. J. He , H. Z. Huang , J. L. Long , W. Q. Shen , X. H. Shi , C. Zhong , J. X. Zuo

The suppression of high transverse momentum particles, recently discovered at RHIC, is commonly interpreted as due to parton energy loss. In high energy nuclear collisions, QCD jets would deposit a large fraction of their energy and into…

Nuclear Theory · Physics 2016-09-08 F. Antinori , ~E. V. Shuryak

Mach cones are expected to form in the expanding quark-gluon plasma (QGP) when energetic quarks and gluons (called jets) traverse the hot medium at a velocity faster than the speed of sound in high-energy heavy-ion collisions. The shape of…

Nuclear Theory · Physics 2023-08-09 Zhong Yang , Yayun He , Wei Chen , Wei-Yao Ke , Long-Gang Pang , Xin-Nian Wang

We have investigated particle acceleration and emission from shocks and shear flows associated with an unmagnetized relativistic jet plasma propagating into an unmagnetized ambient plasma. Strong electro-magnetic fields are generated in the…

High Energy Astrophysical Phenomena · Physics 2014-12-23 K. -I. Nishikawa , P. Hardee , I. Dutan , B. Zhang , A. Meli , E. J. Choi , K. Min , J. Niemiec , Y. Mizuno , M. Medvedev , A. Nordlund , J. T. Frederiksen , H. Sol , M. Pohl , D. Hartmann

I present an overview of some of the recent results on jets and jet-like correlation measurements from the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory. Jets are produced in the initial hard scatterings of an…

Nuclear Experiment · Physics 2011-10-11 Helen Caines

Particle correlation measurements associated with a hard or semi-hard trigger in heavy-ion collisions may reflect Mach cone shockwaves excited in the bulk medium by partonic energy loss. This is of great interest because, when compared with…

Nuclear Theory · Physics 2010-10-27 R. B. Neufeld , Thorsten Renk

Experiments and numerical simulations of inertial particles in underexpanded jets are performed. The structure of the jet is controlled by varying the nozzle pressure ratio, while the influence of particles on emerging shocks and…

We make remarks on Neufeld {\it et al.}'s [{\it Phys. Rev. C} 78, 041901(R) (2008), arXiv:0802.2254] paper especially about the Mach cone formation. We argue that the original bow shock structure (as a fast parton moving through a…

General Physics · Physics 2009-07-02 Zotin K. -H. Chu

The energy and momentum lost by a hard parton propagating through hot and dense matter has to be redistributed during the nuclear medium evolution. Apart from heating the medium, there is the possibility that collective modes are excited…

High Energy Physics - Phenomenology · Physics 2009-11-11 Jörg Ruppert

We study the transport dynamics of momenta deposited from jets in ultrarelativistic heavy-ion collisions. Assuming that the high-energy partons traverse expanding quark-gluon fluids and are subject to lose their energy and momentum, we…

Nuclear Theory · Physics 2014-08-20 Yasuki Tachibana , Tetsufumi Hirano
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