Jet-Like Correlations between Forward and Mid-Rapidity
arXiv:nucl-ex/0610011 · doi:10.1016/j.nuclphysa.2006.11.041
Abstract
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 at forward rapidity with a mid-rapidity high-pt hadron, on the other hand, are sensitive primarily to quark-gluon hard-scattering and may probe quark-jet modification in nuclear medium. They may be also sensitive to the Color Glass Condensate by separating d-side and Au-side in d+Au collisions. We present the first results on correlations of charged hadrons at forward rapidity in the STAR FTPCs (2.7 < |eta| < 3.9, pt < 2 GeV/c) with high-pt charged hadrons at mid-rapidity from the main TPC (|eta| < 1, pt > 3 GeV/c). Preliminary results from pp, d+Au, and Au+Au collisions at 200 GeV are compared. Implications of the results are discussed.
8 pages, 3 figures. Invited talk at Hard Probes 2006, Asilomar, CA
References in corpus (14)
- Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
- Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
- Global QCD Analysis of Parton Structure of the Nucleon: CTEQ5 Parton Distributions
- The STAR Time Projection Chamber: A Unique Tool for Studying High Multiplicity Events at RHIC
- Azimuthal anisotropy in Au+Au collisions at sqrtsNN = 200 GeV
- Energy loss in perturbative QCD
- Distributions of Charged Hadrons Associated with High Transverse Momentum Particles in pp and Au+Au Collisions at sqrt(s_NN)=200 GeV
- Evolution of the nuclear modification factors with rapidity and centrality in d+Au collisions at $\sqrt{s_{NN}} = 200 GeV
- Modifications to Di-Jet Hadron Pair Correlations in Au+Au Collisions at sqrt(s_NN) = 200 GeV
- Scale evolution of nuclear parton distributions
- Jet Azimuthal Correlations and Parton Saturation in the Color Glass Condensate
- The Forward Time Projection Chamber (FTPC) in STAR
- Azimuthal Angle Correlations for Rapidity Separated Hadron Pairs in d+Au Collisions at sqrt(s_NN) = 200 GeV
- Distributions of Charged Hadrons Associated with High pT Particles