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Measurement of forward charged hadron flow harmonics in peripheral PbPb collisions at √sNN = 5.02 TeV with the LHCb detector
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Flow harmonic coefficients, vn, which are the key to studying the hydrodynamics of the quark-gluon plasma (QGP) created in heavy-ion collisions, have been measured in various collision systems and kinematic regions and using various particle species. The study of flow harmonics in a wide pseudorapidity range is particularly valuable to understand the temperature dependence of the shear viscosity to entropy density ratio of the QGP. This paper presents the first LHCb results of the second- and the third-order flow harmonic coefficients of charged hadrons as a function of transverse momentum in the forward region, corresponding to pseudorapidities between 2.0 and 4.9, using the data collected from PbPb collisions in 2018 at a center-of-mass energy of 5.02 TeV. The coefficients measured using the two-particle angular correlation analysis method are smaller than the central-pseudorapidity measurements at ALICE and ATLAS from the same collision system but share similar features.
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COMERMA MONTELLS, Albert, GARCIA MORENO, Paula, GARRIDO BELTRÁN, Lluís, GIOVENTÙ, Alessandra, GIRONELLA GIRONELL, Pere, GOMEZ FERNANDEZ, Sergio, GRAUGÉS POUS, Eugeni, LOBO SALVIA, Aniol, LÓPEZ HUERTAS, Albert, MANERA ESCALERO, Rafel, MARIN BENITO, Carla, MAURICIO FERRE, Joan, ALFONSO ALBERO, Alejandro, VAZQUEZ GOMEZ, Ricardo. Measurement of forward charged hadron flow harmonics in peripheral PbPb collisions at √sNN = 5.02 TeV with the LHCb detector. _Physical Review C_. 2024. Vol. 109, núm. 054908. [consulta: 26 de febrer de 2026]. ISSN: 2469-9985. [Disponible a: https://hdl.handle.net/2445/222015]