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Energy dependence of ϕ meson production at forward rapidity in pp collisions at the LHC

  • ALICE Collaboration
  • CERN
  • Variable Energy Cyclotron Centre India
  • Czech Academy of Sciences
  • Goethe University Frankfurt
  • Lund University
  • National Institute for Nuclear Physics
  • Aligarh Muslim University
  • Korea Institute of Science and Technology Information
  • Pavol Jozef Šafárik University
  • Indonesian Institute of Sciences
  • Russian Research Centre Kurchatov Institute
  • GSI Helmholtz Centre for Heavy Ion Research
  • Central China Normal University
  • Universidad Nacional Autónoma de México
  • COMSATS University Islamabad
  • University of Houston
  • University of Bergen
  • St. Petersburg State University
  • Horia Hulubei National Institute of Physics and Nuclear Engineering
  • National Institute for Subatomic Physics
  • University of Münster
  • Heidelberg University 
  • Lawrence Berkeley National Laboratory
  • Nantes Université
  • University of Oslo
  • Yale University
  • Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
  • Gangneung-Wonju National University

Research output: Contribution to journalJournal articlepeer-review

Abstract

The production of ϕ mesons has been studied in pp collisions at LHC energies with the ALICE detector via the dimuon decay channel in the rapidity region 2.5 < y< 4. Measurements of the differential cross section d 2σ/ d yd pT are presented as a function of the transverse momentum (pT) at the center-of-mass energies s=5.02, 8 and 13 TeV and compared with the ALICE results at midrapidity. The differential cross sections at s=5.02 and 13 TeV are also studied in several rapidity intervals as a function of pT, and as a function of rapidity in three pT intervals. A hardening of the pT-differential cross section with the collision energy is observed, while, for a given energy, pT spectra soften with increasing rapidity and, conversely, rapidity distributions get slightly narrower at increasing pT. The new results, complementing the published measurements at s=2.76 and 7 TeV, allow one to establish the energy dependence of ϕ meson production and to compare the measured cross sections with phenomenological models. None of the considered models manages to describe the evolution of the cross section with pT and rapidity at all the energies.

Original languageEnglish
Article number772
JournalEuropean Physical Journal C
Volume81
Issue number8
DOIs
StatePublished - 2021.08

Quacquarelli Symonds(QS) Subject Topics

  • Physics & Astronomy

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