Identifying the underlying physics of the ridge via 3-particle $\Delta \eta -\Delta \eta$ correlations

Abstract

We present the first results on 3-particle $\Delta \eta$-$\Delta \eta$ correlations in minimum bias $d$+Au, peripheral and central Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV measured by the STAR experiment. The analysis technique is described in detail. The ridge particles, observed at large $\Delta \eta$ in dihadron correlations in central Au+Au collisions, appear to be uniformly distributed over the measured $\Delta \eta$-$\Delta \eta$ region in 3-particle correlation. The results, together with theoretical models, should help further our understanding of the underlying physics of the ridge.

8 Pages, 3 Figures, presented at the 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, "QuarkMatter-2008" Jaipur, India, February 4-10, 2008

References in corpus (8)

• Azimuthal anisotropy in Au+Au collisions at sqrtsNN = 200 GeV
• Distributions of Charged Hadrons Associated with High Transverse Momentum Particles in pp and Au+Au Collisions at sqrt(s_NN)=200 GeV
• Measuring The Collective Flow With Jets
• Transverse radial expansion in nuclear collisions and two particle correlations
• Intra-jet correlations of high-$p_t$ hadrons from STAR
• On the Origin of the "Ridge" phenomenon induced by Jets in Heavy Ion Collisions
• Pedestal and Peak Structure in Jet Correlation
• Longitudinal Broadening of Quenched Jets in Turbulent Color Fields

Cited by in corpus (12)

• The Color Glass Condensate
• Three-particle correlation from glasma flux tubes
• Non-perturbative computation of double inclusive gluon production in the Glasma
• 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
• Momentum Kick Model Analysis of PHENIX Near-Side Ridge Data and Photon Jet
• The Wigner Function of Produced Particles in String Fragmentation
• STAR results on medium properties and response of the medium to energetic partons
• The ridge effect and three-particle correlations
• Bose-Einstein Interference in the Passage of a Jet in a Dense Medium
• Addressing the physics of the ridge by 2- and 3-particle correlations at STAR
• Feynman Amplitude Approach to study the Passage of a Jet in a Medium