2011/07/01 by Alejandro Ayala, Jamal Jalilian-Marian, Antonio Ortiz +5 · 1 citation
Physics and Astronomy · #Biology #Hadron #High-Energy Particle Collisions Research #Nuclear physics #Nucleus #Particle physics #Particle physics theoretical and experimental studies #Perturbative QCD #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.84.024915
published as Phys.Rev.C84:024915,2011 · 7 pages, 7 figures
arxiv created 2011/07/01 · openalex publication_date 2011/08/29 · arxiv updated 2011/09/02 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study three-hadron azimuthal angular correlations in high-energy proton-proton and central nucleus-nucleus collisions at the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider at midrapidity. We use the leading-order parton matrix elements for 2\ensuremath→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 the same or not too different momenta, we observe two away-side peaks at 2\ensuremathπ/3 and 4\ensuremathπ/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\ensuremath→3 processes to dihadron angular correlations and how a comparison of the two processes may help characterize the plasma further.