Pseudorapidity and transverse momentum dependence of flow harmonics in pPb and PbPb collisions

Preprint English OPEN
Sirunyan, Albert M ; Tumasyan, Armen ; Flechl, Martin ; Caudron, Adrien ; Boimska, Bozena ; Frueboes, Tomasz ; Górski, Maciej ; Kazana, Malgorzata ; Nawrocki, Krzysztof ; Romanowska-Rybinska, Katarzyna ; Szleper, Michal ; Zalewski, Piotr ; Bunkowski, Karol ; Byszuk, Adrian ; De Visscher, Simon ; Doroba, Krzysztof ; Kalinowski, Artur ; Konecki, Marcin ; Krolikowski, Jan ; Misiura, Maciej ; Olszewski, Michal ; Pyskir, Andrzej ; Walczak, Marek ; Bargassa, Pedrame ; Beirão Da Cruz E Silva, Cristóvão ; Delaere, Christophe ; Calpas, Betty ; Di Francesco, Agostino ; Faccioli, Pietro ; Gallinaro, Michele ... view all 2,222 authors (2017)
  • Related identifiers: doi: 10.3204/PUBDB-2017-11777
  • Subject: peripheral | transverse momentum | rapidity | CMS | CERN LHC Coll | transverse momentum dependence | angular correlation | CERN Lab | flow
    arxiv: Physics::Instrumentation and Detectors | Nuclear Experiment | High Energy Physics::Experiment

Measurements of azimuthal angular correlations are presented for high-multiplicity pPb collisions at $\sqrt{s_\mathrm{NN}}=$ 5.02 TeV and peripheral PbPb collisions at $\sqrt{s_\mathrm{NN}}=$ 2.76 TeV. The data used in this work were collected with the CMS detector at the CERN LHC. Fourier coefficients as functions of transverse momentum and pseudorapidity are studied using the scalar product method, 4-, 6-, and 8-particle cumulants, and the Lee-Yang zeros technique. The influence of event plane decorrelation is evaluated using the scalar product method and found to account for most of the observed pseudorapidity dependence.
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