Measurement of the elliptic anisotropy of charged particles produced in PbPb
By S. Chatrchyan, V. Khachatryan, A. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Erö, C. Fabjan, M. Friedl and 2,172 more. 2013
161 citations recorded by the source corpus.
The anisotropy of the azimuthal distributions of charged particles produced in √s_(NN)=2.76 TeV PbPb collisions is studied with the CMS experiment at the LHC. The elliptic anisotropy parameter, v_2, defined as the second coefficient in a Fourier expansion of the particle invariant yields, is extracted using the event-plane method, two- and four-particle cumulants, and Lee-Yang zeros. The anisotropy is presented as a function of transverse momentum (p_T), pseudorapidity (η) over a broad kinematic range, 0.3<p_T<20 GeV/c, |η|<2.4, and in 12 classes of collision centrality from 0 to 80%. The results are compared to those obtained at lower center-of-mass energies, and various scaling behaviors are examined. When scaled by the geometric eccentricity of the collision zone, the elliptic anisotropy is found to obey a universal scaling with the transverse particle density for different collision systems and center-of-mass energies.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/0ab2ed0ce19679e0d51ea7dba7bf5fff8af0eb3d
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In Nuclear and High Energy Physics
Citations in the corpus
- Mapping the phases of quantum chromodynamics with beam energy scan (2019, result): “This expectation has meanwhile been confirmed by measurements at the LHC [217–221].”
- The Angantyr model for heavy-ion collisions in Pythia8 (2018, background): “In figure figure 20 we show v2{2} as function of centrality16 measured with and without a ∆η gap of 1.0, by ALICE [70,71] and CMS [69] respectively.”