High-pT hadron spectra, azimuthal anisotropy and back-to-back correlations in high-energy heavy-ion collisions

  title={High-pT hadron spectra, azimuthal anisotropy and back-to-back correlations in high-energy heavy-ion collisions},
  author={Xin-Nian Wang},
  journal={Physics Letters B},
Abstract The observed suppression of high- p T hadron spectra, finite azimuthal anisotropy, disappearance of jet-like back-to-back correlations, and their centrality dependence in Au+Au collisions at RHIC are shown to be quantitatively described by jet quenching within a pQCD parton model. The difference between h ± and π 0 suppression in intermediate p T is consistent with the observed ( K + p )/ π enhancement which should disappear at p T >6 GeV/ c . The suppression of back-to-back… 
Surface versus volume emissions in photon–hadron correlations
High-pT photon–hadron correlations are studied within the next-to-leading order (NLO) perturbative QCD parton model with modified parton-jet fragmentation functions due to jet quenching in
High- p T hadron-hadron correlations in vacuum and in matter
Two-particle correlations within a single jet produced in deeply inelastic scattering (DIS) off a large nucleus as well as in heavy-ion collisions are studied. This is performed within the framework
Direct observation of dijets in central Au+Au collisions with STAR
We present first results of azimuthal ( Δ ϕ ) correlations of high transverse momentum ( p T ) hadrons from the high-statistics Au+Au dataset collected at RHIC in 2004. Previous correlations
The azimuthal anisotropy of high pT hadron in high energy A + A collisions is studied within the next-to-leading order (NLO) perturbative QCD parton model. The effect of jet quenching is incorporated
Large angle hadron correlations from medium-induced gluon radiation
Abstract Final state medium-induced gluon radiation in ultradense nuclear matter is examined and shown to favor large angle emission when compared to vacuum bremsstrahlung due to the suppression of
Azimuthal correlations of high-pT photons and hadrons in Au+Au collisions at RHIC
The measurement of γ + jet events with a direct photon in coincidence with an energetic parton can provide unique insights into the propagation and fragmentation of the parton in the presence of the
A NLO analysis on fragility of dihadron tomography in high energy AA collisions
The dihadron spectra in high energy AA collisions are studied within the NLO pQCD parton model with jet quenching taken into account. The high pT dihadron spectra are found to be contributed not only
Multiparton Tomography of Hot and Cold Nuclear Matter
Multiple parton interactions in relativistic heavy ion reactions result in transverse momentum diffusion and medium induced non‐Abelian energy loss of the hard probes traversing cold and hot nuclear
Medium-induced jet absorption in relativistic heavy-ion collisions
The dense medium created in Au+Au collisions at the Relativistic Heavy-Ion Collider significantly suppresses particle production from hard-scattering processes and their characteristic back-to-back
System, energy, and flavor dependence of jets through di-hadron correlations in heavy ion collisions
System, energy, and flavor dependence of jets through di-hadron correlations in heavy ion collisions Christine Nattrass Yale University December 2009 QCD predicts a phase transition in nuclear matter


Back-to-back correlations of high-p(T) hadrons in relativistic heavy-ion collisions.
Parton energy loss is found to be a dominant effect on the reduction of the awayside peaks in the correlation function.
Disappearance of back-to-back high-pT hadron correlations in central Au+Au collisions at sqrt[s NN ] =200 GeV.
The back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium.
Azimuthal anisotropy and correlations in the hard scattering regime at RHIC.
Azimuthal anisotropy (v(2)) and two-particle angular correlations of high p(T) charged hadrons have been measured in Au+Au collisions at sqrt[s(NN)]=130 GeV for transverse momenta up to 6 GeV/c,
Transverse expansion and high pT azimuthal asymmetry at RHIC
Abstract Rapid (3+1)D transverse plus Bjorken collective expansion in A + A collisions at ultra-relativistic energies is shown to reduce substantially the azimuthal asymmetry resulting from jet
High-p(T) Tomography of d+Au and Au+Au at SPS, RHIC, and LHC.
It is shown that future d+Au data can be used to disentangle the initial and final state effects of nuclear suppression/enhancement pattern in A+A reactions, and predicted competition between nuclear shadowing, Cronin effect, and jet energy loss due to medium-induced gluon radiation.
Jet quenching and azimuthal anisotropy of large p(T) spectra in noncentral high-energy heavy ion collisions
Parton energy loss inside a dense medium leads to the suppression of large pT hadrons and can also cause azimuthal anisotropy of hadron spectra at large transverse momentum in non-central high-energy
Jet tomography of hot and cold nuclear matter.
Modification of parton fragmentation functions by multiple scattering and gluon bremsstrahlung in nuclear media is shown to describe very well the recent HERMES data in deeply inelastic scattering,
Suppression of hadrons with large transverse momentum in central Au + Au collisions at √sNN = 130 GeV
Transverse momentum spectra for charged hadrons and for neutral pions in the range 1 Gev/c < P-T < 5 GeV/c have been measured by the PHENIX experiment at RHIC in Au + Au collisions at rootS(NN) = 130
Centrality dependence of high-p(T) hadron suppression in Au+Au collisions at sqrt[s(NN)]=130 GeV.
The results indicate significant nuclear medium effects on high-p(T) hadron production in heavy-ion collisions at high energy.
Multiple collisions and induced gluon Bremsstrahlung in QCD
Abstract Induced soft gluon bremsstrahlung associated with multiple collisions is calculated via perturbative QCD. We derive the non-abelian analog of the Landau-Pomeranchuk effect that suppresses