High p_T Triggered Delta-eta,Delta-phi Correlations over a Broad Range in Delta-eta

Abstract

The first measurement of pseudorapidity (Delta-eta) and azimuthal angle (Delta-phi) correlations between high transverse momentum charged hadrons (p_T > 2.5 GeV/c) and all associated particles is presented at both short- (small Delta-eta) and long-range (large Delta-eta) over a continuous pseudorapidity acceptance (-4<Delta-eta<2). In these proceedings, the various near- and away-side features of the correlation structure are discussed as a function of centrality in Au+Au collisions measured by PHOBOS at sqrt(s_NN)=200 GeV. In particular, this measurement allows a much more complete determination of the longitudinal extent of the ridge structure, first observed by the STAR collaboration over a limited eta range. In central collisions the ridge persists to at least Delta-eta=4, diminishing in magnitude as collisions become more peripheral until it disappears around Npart=80.

5 pages, 2 figures, presented at the 20th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, "Quark Matter 2008", Jaipur, India, February 4-10, 2008. Full author list included and typo corrected in equation 1

References in corpus (5)

• Intra-jet correlations of high-$p_t$ hadrons from STAR
• Momentum Broadening in an Anisotropic Plasma
• 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
• Ridge Structure associated with the Near-Side Jet in the (Delta phi)-(Delta eta) Correlation
• Jet-like correlations between Forward- and Mid- rapidity in p+p, d+Au and Au+Au collisions from STAR at 200 GeV

Cited by in corpus (16)

• High energy factorization in nucleus-nucleus collisions III. Long range rapidity correlations
• Higher Flow Harmonics in Heavy Ion Collisions from STAR
• The Momentum Kick Model Description of the Near-Side Ridge and Jet Quenching
• Momentum Kick Model Description of the Ridge in (Delta-phi)-(Delta eta) Correlation in pp Collisions at 7 TeV
• Dependence of Ridge Formation on Trigger Azimuth: Correlated Emission Model
• Hydrodynamics: Fluctuating Initial Conditions and Two-particle Correlations
• The Wigner Function of Produced Particles in String Fragmentation
• Momentum Kick Model Analysis of PHENIX Near-Side Ridge Data and Photon Jet
• Parton Momentum Distribution at the Moment of Jet-Parton Collision
• System size dependence of associated yields in hadron-triggered jets
• Latest results from the PHOBOS experiment
• Bose-Einstein Interference in the Passage of a Jet in a Dense Medium
• Identification of flow-background to subtract in jet-like azimuthal correlation
• Feynman Amplitude Approach to study the Passage of a Jet in a Medium
• Novel Bose-Einstein Interference in the Passage of a Fast Particle in a Dense Medium
• Analysis of the near-side ridge structure in pp collisions via Momentum-Kick Model