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Title

Observation of prompt J/ψ meson elliptic flow in high-multiplicity pPb collisions at √sNN 8.16 TeV

AuthorsSirunyan, A. M.; Cabrillo, I. J. ; Calderon, Alicia ; Chazin Quero, B.; Duarte Campderros, J. ; Fernández, M. ; Fernández-Manteca, Pedro; García Alonso, A.; García-Ferrero, J. ; Gómez, G. ; López Virto, A. ; Marco, Jesús ; Martínez-Rivero, Celso ; Martínez Ruiz del Arbol, P. ; Matorras, Francisco ; Piedra, Jonatan ; Prieels, C.; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Trevisani, N. ; Vila, Iván ; Vilar, Rocío
Issue Date2019
PublisherElsevier
CitationPhysics Letters B 791: 172-194 (2019)
AbstractA measurement of the elliptic flow (v2) of prompt J/ψ mesons in high-multiplicity pPb collisions is reported using data collected by the CMS experiment at a nucleon-nucleon center-of-mass energy √sNN 8.16 TeV . Prompt J/ψ mesons decaying into two muons are reconstructed in the rapidity region in the nucleon-nucleon center-of-mass frame (ycm), corresponding to either −2.86<ycm<−1.86 or 0.94<ycm<1.94. The average v2 result from the two rapidity ranges is reported over the transverse momentum (pT) range from 0.2 to 10 GeV. Positive v2 values are observed for the prompt J/ψ meson, as extracted from long-range two-particle correlations with charged hadrons, for 2<pT<8 GeV. The prompt J/ψ results are compared with previous CMS measurements of elliptic flow for open charm mesons (D0) and strange hadrons. From these measurements, constraints can be obtained on the collective dynamics of charm quarks produced in high-multiplicity events arising from small systems.
DescriptionThe CMS Collaboration: etal.
Publisher version (URL)https://doi.org/10.1016/j.physletb.2019.02.018
URIhttp://hdl.handle.net/10261/213484
DOIhttp://dx.doi.org/10.1016/j.physletb.2019.02.018
Identifiersdoi: 10.1016/j.physletb.2019.02.018
issn: 0370-2693
Appears in Collections:(IFCA) Artículos
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