Aaboud, M;
Aad, G;
Abbott, B;
Abdallah, J;
Abdinov, O;
Abeloos, B;
Abidi, SH;
... Zwalinski, L; + view all
(2017)
Measurement of multi-particle azimuthal correlations in pp, p plus Pb and low-multiplicity Pb plus Pb collisions with the ATLAS detector.
The European Physical Journal C
, 77
(6)
, Article 428. 10.1140/epjc/s10052-017-4988-1.
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Abstract
Multi-particle cumulants and corresponding Fourier harmonics are measured for azimuthal angle distributions of charged particles in pppp collisions at s√s = 5.02 and 13 TeV and in pp + Pb collisions at sNN−−−√sNN = 5.02 TeV, and compared to the results obtained for low-multiplicity Pb + PbPb + Pb collisions at sNN−−−√sNN = 2.76 TeV. These measurements aim to assess the collective nature of particle production. The measurements of multi-particle cumulants confirm the evidence for collective phenomena in pp + Pb and low-multiplicity Pb + PbPb + Pb collisions. On the other hand, the pppp results for four-particle cumulants do not demonstrate collective behaviour, indicating that they may be biased by contributions from non-flow correlations. A comparison of multi-particle cumulants and derived Fourier harmonics across different collision systems is presented as a function of the charged-particle multiplicity. For a given multiplicity, the measured Fourier harmonics are largest in Pb + PbPb + Pb , smaller in pp + Pb and smallest in pppp collisions. The pppp results show no dependence on the collision energy, nor on the multiplicity.
| Type: | Article |
|---|---|
| Title: | Measurement of multi-particle azimuthal correlations in pp, p plus Pb and low-multiplicity Pb plus Pb collisions with the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-017-4988-1 |
| Publisher version: | http://dx.doi.org/10.1140/epjc/s10052-017-4988-1 |
| Language: | English |
| Additional information: | © CERN for the benefit of the ATLAS collaboration 2017. This article is an open access publication |
| Keywords: | Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics, Nucleus-Nucleus Collisions, Quark-Gluon Plasma, Angular-Correlations, Root-S(Nn)=2.76 Tev, Anisotropic Flow, Collective Flow, Proton-Nucleus, Ion Collisions, Eccentricities, Collaboration |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1561598 |
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