Three-hadron angular correlations from pQCD at RHIC and LHC

Abstract

We study three-hadron azimuthal angular correlations in high energy proton-proton and central nucleus-nucleus collisions at RHIC and LHC at mid-rapidity. We use the LO parton matrix elements for 2 \rightarrow 3 processes and include the effect of parton energy loss in the Quark-Gluon Plasma using the modified fragmentation function approach. For the case when the produced hadrons have either same or not too different momenta, we observe two away side peaks at 2pi/3 and 4pi/3. We consider the dependence of the angular correlations on energy loss parameters that have been used in studies of single inclusive hadron production at RHIC. Our results on the angular dependence of the cross section agree well with preliminary data by the PHENIX collaboration. We comment on the possible contribution of 2 \rightarrow 3 processes to di-hadron angular correlations and how a comparison of the two processes may help characterize the plasma further.

7 pages, 7 figures

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• Dihadron azimuthal correlations in Au+Au collisions at sqrt(s_NN)=200 GeV
• Direct observation of dijets in central Au+Au collisions at sqrt(s_NN) = 200 GeV
• Dihadron Tomography of High-Energy Nuclear Collisions in NLO pQCD
• Automation of the Dipole Subtraction Method in MadGraph/MadEvent
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Cited by in corpus (7)

• Multiple jets and $\gamma$-jet correlation in high-energy heavy-ion collisions
• Flavor dependence of jet quenching in heavy-ion collisions from a Bayesian analysis
• Relating $\hat{q}$, $\eta /s$ and $\Delta E$ in an expanding Quark-Gluon Plasma
• Parton splitting scales of reclustered large-radius jets in high-energy nuclear collisions
• Head shock vs Mach cone: azimuthal correlations from 2 to 3 parton processes in relativistic heavy-ion collisions
• Jet asymmetry and momentum imbalance from $2\to 2$ and $2\to 3$ partonic processes in relativistic heavy-ion collisions
• Monte Carlo approach for hadron azimuthal correlations in high energy proton and nuclear collisions