CERN Accelerating science

If you experience any problem watching the video, click the download button below
Download Embed
Article
Report number arXiv:1910.09110 ; CERN-EP-2019-205
Title Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at sNN = 5.02 TeV
Author(s) ALICE Collaboration  1037 人のオーサーを表示
Corporate author(s) The ALICE collaboration
Publication 2020-05-10
Imprint 21 Sep 2019
Number of pages 26
Note 26 pages, 4 captioned figures, 5 tables, authors from page 21, published version, figures at http://alice-publications.web.cern.ch/node/5604
Published in: Phys. Lett. B 804 (2020) 135377
DOI 10.1016/j.physletb.2020.135377
Subject category Particle Physics - Experiment ; hep-ex ; nucl-ex ; Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ALICE
Keywords flavor physics ; relativistic heavy ion physics ; quark gluon plasma ; heavy quark production ; particle and resonance production ; experimental results
Abstract The differential invariant cross section as a function of transverse momentum (pT) of electrons from semileptonic heavy-flavour hadron decays was measured at mid-rapidity in proton-proton (pp) collisions at s=5.02 TeV in the pT interval 0.5-10 GeV/c, as well as the invariant yield in central (0-10%), semi-central (30-50%) and peripheral (60-80%) lead-lead (Pb-Pb) collisions at sNN=5.02 TeV in the pT intervals 0.5-26 GeV/c (0-10% and 30-50%) and 0.5-10 GeV/c (60-80%). The modification of the electron yield with respect to what is expected for an incoherent superposition of nucleon--nucleon collisions is evaluated by measuring the nuclear modification factor RAA. The measurement of the RAA in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. Moreover, the measured RAA is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low pT in heavy-ion collisions at LHC.
Other source Inspire
Copyright/License preprint: © 2019-2025 CERN (License: CC-BY-4.0)
publication: © 2020-2025 Conseil Européen pour la Recherche Nucléaire (License: CC-BY-4.0)
Submitted by david.dobrigkeit.chinellato@cern.ch



 


 レコード 生成: 2019-09-21, 最終変更: 2025-01-06


Article from SCOAP3:
Download fulltextPDF
(追加ファイル)
フルテキスト:
Download fulltextPDF
(追加ファイル)
  • Send to ScienceWise.info