2007/07/05 by Fuqiang Wang, F. Wang
Physics and Astronomy · #Color-glass condensate #Gluon #Hadron #High-Energy Particle Collisions Research #Jet (fluid) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Quark–gluon plasma #Rapidity #Scattering #nucl-ex
paper · pdf · doi:10.1142/s0218301307009166
published as Int.J.Mod.Phys. E16 (2008) 3168-3175 · Invited talk at the XIth International Workshop on Correlation and Fluctuation in Multiparticle Production, Hangzhou, China, November 2007
arxiv created 2007/07/05 · openalex publication_date 2007/11/01 · arxiv updated 2019/08/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Mid-rapidity azimuthal correlations probe di-jets originating mainly from gluon-gluon hard-scattering. Measurements of such correlations have revealed significant (gluon-)jet modification in central Au + Au collisions. Azimuthal correlations of hadrons at forward rapidity with a mid-rapidity high-p ⊥ hadron, on the other hand, probe asymmetric partonic scatterings involving large- x quarks and small- x gluons. We present preliminary results from STAR on correlations of charged hadrons at forward rapidity in the forward TPCs (2.7 < |η| < 3.9, p ⊥ < 2 GeV /c) with high-p ⊥ charged hadrons at mid-rapidity from the main TPC (|η| < 1, p ⊥ > 3 GeV /c) in pp , d + Au , and Au + Au collisions at [Formula: see text]. The implications of the results for small- x gluon distributions (Color Glass Condensate formation) and the energy loss of quark jets at forward rapidity in nuclear medium are discussed.