The "soft ridge" - is it initial-state geometry or modified jets?
Abstract
A same-side (SS, on azimuth ) 2D peak in measured angular correlations from 200 GeV \pp collisions exhibits properties expected for jet formation. In more-central \auau collisions the SS peak becomes elongated on pseudorapidity and the transverse momentum structure is modified. In the latter case the SS 2D peak has been referred to as a "Soft Ridge", and arguments have been presented that the elongated peak represents flow phenomena ("triangular" and "higher harmonic" flows), possibly related to the initial-state \aa geometry. In this presentation I demonstrate that "higher harmonic flows" are related to SS 2D peak properties and review evidence for a jet interpretation of the SS peak for all \auau centralities.
Keywords
Cite
@article{arxiv.1208.5722,
title = {The "soft ridge" - is it initial-state geometry or modified jets?},
author = {Thomas A. Trainor},
journal= {arXiv preprint arXiv:1208.5722},
year = {2015}
}
Comments
8 pages, 10 figures, Talk given at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)