Measurements of elliptic and triangular flow in high-multiplicity .sup.3./sup.He+Au collisions at √s.sub.NN./sub. =200GeV

0522531 - FZÚ 2020 RIV US eng J - Journal Article
Adare, A. - Afanasiev, S. - Aidala, C. - Kubart, J. - Mašek, L. - Mikeš, P. - Růžička, Pavel - Tomášek, Lukáš - Tomášek, Michal - Vrba, Václav … Total 630 authors
Measurements of elliptic and triangular flow in high-multiplicity ³He+Au collisions at √s_NN =200GeV.
Physical Review Letters. Roč. 115, č. 14 (2015), s. 1-9, č. článku 142301. ISSN 0031-9007. E-ISSN 1079-7114
Institutional support: RVO:68378271
Keywords : PHENIX * PHENIX * resolution * calorimeter * nucleon * helium * Glauber * Monte Carlo * experimental results * numerical calculations * 200 GeV
OECD category: Particles and field physics
Impact factor: 7.645, year: 2015
Method of publishing: Limited access
https://doi.org/10.1103/physrevlett.115.142301

We present the first measurement of elliptic (v2) and triangular (v3) flow in high-multiplicity He3+Au collisions at sNN=200  GeV. Two-particle correlations, where the particles have a large separation in pseudorapidity, are compared in He3+Au and in p+p collisions and indicate that collective effects dominate the second and third Fourier components for the correlations observed in the He3+Au system. The collective behavior is quantified in terms of elliptic v2 and triangular v3 anisotropy coefficients measured with respect to their corresponding event planes. The v2 values are comparable to those previously measured in d+Au collisions at the same nucleon-nucleon center-of-mass energy. Comparisons with various theoretical predictions are made, including to models where the hot spots created by the impact of the three He3 nucleons on the Au nucleus expand hydrodynamically to generate the triangular flow.

Permanent Link: http://hdl.handle.net/11104/0307009