Direct observation of dijets in central Au+Au collisions at sqrt(s_NN) = 200 GeV

Abstract

The STAR Collaboration at RHIC reports measurements of azimuthal correlations of high transverse momentum (p_T) charged hadrons in Au+Au collisions at higher p_T than reported previously. As p_T is increased, a narrow, back-to-back peak emerges above the decreasing background, providing a clear dijet signal for all collision centralities studied. Using these correlations, we perform a systematic study of dijet production and suppression in nuclear collisions, providing new constraints on the mechanisms underlying partonic energy loss in dense matter.

6 pages, 4 figures

Cited by in corpus (46)

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• Dihadron Tomography of High-Energy Nuclear Collisions in NLO pQCD
• Intra-jet correlations of high-$p_t$ hadrons from STAR
• Tomography of high-energy nuclear collisions with photon-hadron correlations
• Testing AdS/CFT Deviations from pQCD Heavy Quark Energy Loss with Pb+Pb at LHC
• Prospects of medium tomography using back-to-back hadron correlations
• Parton shower evolution in a 3-d hydrodynamical medium
• Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at sqrt(s_NN)=200 GeV: Jet-quenching and the response of partonic matter
• Jet hadrochemistry as a characteristics of jet quenching
• Jet Shapes in Opaque Media
• Transverse Radial Flow Effects on Two- and Three-Particle Angular Correlations
• Quark-Gluon Matter
• First Direct Measurement of Jets in $\sqrt{s_{NN}}=200$ GeV Heavy Ion Collisions by STAR
• The Phenomenology of Elastic Energy Loss
• Di-Jet Conical Correlations Associated with Heavy Quark Jets in anti--de Sitter Space/Conformal Field Theory Correspondence
• Low- and Intermediate-p${}_T$ Di-hadron Distributions in Au+Au Collisions at $\sqrt{s_{NN}}=200$ GeV from STAR
• Away-side azimuthal distribution in a Markovian parton scattering model
• Angular variation of hard back-to-back hadron suppression in heavy-ion collisions
• Dependence of Ridge Formation on Trigger Azimuth: Correlated Emission Model
• Three-Particle Correlations from Parton Cascades in Au+Au Collisions
• Resolving the plasma profile via differential single inclusive suppression
• Medium-modified Jet Shapes and other Jet Observables from in-medium Parton Shower Evolution
• Predictions for the LHC heavy ion programme
• Methods for Jet Studies with Three-Particle Correlations
• Understanding jet quenching and medium response with di-hadron correlation
• Correlated Production of p and p^bar in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Recent high-pt results from STAR
• Counting valence quarks at RHIC and LHC
• Energy deposition in hard dihadron triggered events in heavy-ion collisions
• Ways to constrain the away side jet in Au + Au collisions in PHENIX
• Direct photon-charged hadron azimuthal correlations
• In-Medium Properties of Jets
• Expectations for dihadron correlation measurements at the LHC
• Punch-through jets in $A+A$ collisions at RHIC/LHC
• STAR Results on High Transverse Momentum, Heavy Flavor and Electromagnetic Probes
• Influence of quenched jets on di-hadron correlations
• How to Make Sense of the Jet Correlations Results at RHIC?
• Jet Propagation and Mach-Cone Formation in (3+1)-dimensional Ideal Hydrodynamics
• A NLO analysis on fragility of dihadron tomography in high energy $AA$ collisions
• Identification and Rejection of Fake Reconstructed Jets From a Fluctuating Heavy Ion Background in ATLAS
• Successes and failures with hard probes
• ${\pi }^0$-h correlation in Cu+Cu at $\sqrt{s_{NN}}$=200 GeV
• Modified Fragmentation Function in Heavy Ion Collisions at RHIC via Direct photon-Jet Measurements
• Mapping out the jet correlation landscape: a perspective from PHENIX experiment
• Hadron-hadron correlations at low and high $p_T$ in heavy-ion collisions
• Deciphering the properties of hot and dense matter with hadron-hadron correlations