Recent results on two-particle correlations in ALICE

15th International Conference on Strangeness in Quark Matter

Ohlson, Alice^1

CERN, Geneva, Switzerland^1

关键词: Correlation function;    Heavy ion collision;    High multiplicity;    Long range correlations;    Mid-rapidity;    Pb-Pb collisions;    Pseudorapidities;    Two particle correlation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/668/1/012074/pdf
DOI  :  10.1088/1742-6596/668/1/012074

来源: IOP

【 摘 要 】

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 √sNN = 5.02 TeV. The results demonstrate that the nearside and awayside ridges extend to Δη ∼ ±5 and that the v2of muons, obtained from subtracting the correlation functions in high- and low-multiplicity events, is (16 ± 6)% higher in the Pb-going than in the p-going direction. The results are compared with AMPT simulations.