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

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

2009-07-27

arxiv.org/abs/0907.4617v2

Nucl.Phys.A830:621c-622c,2009

Physics

Nuclear Physics

Nuclear Experiment

2 pages, 2 figures, Quark Matter 2009

Scientific paper

10.1016/j.nuclphysa.2009.10.057

Motivated by the recent observation that the ridge decreases with trigger particle angle ($\phi_s$) 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 $\phi_s$. We present an analysis of this asymmetry from STAR data. We found an asymmetric ridge with maximum asymmetry at $\phi_s\approx45^{\circ}$ concurrent with a symmetric jet at all $\phi_s$.

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