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Abstract: The second-order (v2) and third-order (v3) Fourier coefficients describing the azimuthal anisotropy of prompt and nonprompt (from b-hadron decays) J/?, as well as prompt ?(2S) mesons are measured in lead-lead collisions at a center-of-mass energy per nucleon pair of = 5.02 TeV. The analysis uses a data set corresponding to an integrated luminosity of 1.61 nb?1 recorded with the CMS detector. The J/? and ?(2S) mesons are reconstructed using their dimuon decay channel. The v2 and v3 coefficients are extracted using the scalar product method and studied as functions of meson transverse momentum and collision centrality. The measured v2 values for prompt J/? mesons are found to be larger than those for nonprompt J/? mesons. The prompt J/? v2 values at high pT are found to be underpredicted by a model incorporating only parton energy loss effects in a quark-gluon plasma medium. Prompt and nonprompt J/? meson v3 and prompt ?(2S) v2 and v3 values are also reported for the first time, providing new information about heavy quark interactions in the hot and dense medium created in heavy ion collisions.
Fuente: Journal of High Energy Physics, 2023, 2023(10), 115
Publisher: Springer Verlag
Publication date: 01/10/2023
No. of pages: 42
Publication type: Article
DOI: 10.1007/JHEP10(2023)115
ISSN: 1126-6708,1029-8479
Publication Url: https://doi.org/10.1007/JHEP10(2023)115
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TUMASYAN, A.
JAVIER ANDRES BROCHERO CIFUENTES
JOSE IBAN CABRILLO BARTOLOME
ALICIA CALDERON TAZON
JORGE DUARTE CAMPDERROS
MARCOS FERNANDEZ GARCIA
CELIA FERNANDEZ MADRAZO
ANDREA GARCIA ALONSO
GERVASIO GOMEZ GRAMUGLIO
CLARA LASAOSA GARCIA
CELSO MARTINEZ RIVERO
PABLO MARTINEZ RUIZ DEL ARBOL
FRANCISCO MATORRAS WEINIG
PABLO MATORRAS CUEVAS
JONATAN PIEDRA GOMEZ
CEDRIC GERALD PRIEELS
ALBERTO RUIZ JIMENO
LUCA SCODELLARO
IVAN VILA ALVAREZ
JESUS MANUEL VIZAN GARCIA
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