Is the ridge formed by aligned jet propagation and medium flow?

Abstract

Motivated by the recent observation that the ridge decreases with trigger particle angle (${\varphi }_s$) relative to the event plane, it is theorized that the ridge is formed by interplay between jet propagation and medium flow. Such interplay may produce asymmetry in the ridge azimuthal correlation at a fixed ${\varphi }_s$. We present an analysis of this asymmetry from STAR data. We found an asymmetric ridge with maximum asymmetry at ${\varphi }_s\approx 45^{\circ }$ concurrent with a symmetric jet at all ${\varphi }_s$.

2 pages, 2 figures, Quark Matter 2009

References in corpus (7)

• Glasma flux tubes and the near side ridge phenomenon at RHIC
• Topology studies of hydrodynamics using two particle correlation analysis
• Intra-jet correlations of high-$p_t$ hadrons from STAR
• On the Origin of the "Ridge" phenomenon induced by Jets in Heavy Ion Collisions
• Reaction Plane Dependent Away-side Modification and Near-side Ridge in Au+Au Collisions
• Dependence of Ridge Formation on Trigger Azimuth: Correlated Emission Model
• Anisotropic flow background to jet-correlation relative to reaction plane: A revisit of the mathematical framework

Cited by in corpus (3)

• Novel Phenomena in Particle Correlations in Relativistic Heavy-Ion Collisions
• Effects of Minijets on Hadronic Spectra and Azimuthal Harmonics in Au-Au Collisions at 200 GeV
• Measurements of Dihadron Correlations Relative to the Event Plane in Au+Au Collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=200$ GeV