Recent results on two-particle correlations in ALICE

Abstract

The discovery of correlations between particles separated by several units of pseudorapidity in high-multiplicity pp and p-Pb collisions, reminiscent of structures observed in Pb-Pb collisions, was a challenge to traditional ideas about collectivity in heavy ion collisions. In order to further explore long-range correlations and provide information to theoretical models, correlations between forward trigger muons and mid-rapidity associated hadrons were measured in p-Pb collisions at $\sqrt{s_{\mbox{NN}}} = 5.02~\mbox{TeV}$. The results demonstrate that the nearside and awayside ridges extend to $\Delta \eta \sim \pm 5$ and that the $v_2$ of muons, obtained from subtracting the correlation functions in high- and low-multiplicity events, is $(16\pm 6)\%$ higher in the Pb-going than in the p-going direction. The results are compared with AMPT simulations.

Proceedings of the Strangeness in Quark Matter 2015 (SQM 2015) conference, July 2015

References in corpus (3)

• Observation of long-range near-side angular correlations in proton-lead collisions at the LHC
• Long-range angular correlations of $\pi$, K and p in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Long-range two-particle correlations of strange hadrons with charged particles in pPb and PbPb collisions at LHC energies

Cited by in corpus (1)

• Long Range Azimuthal Correlations of Multiple Gluons in Gluon Saturation Limit