A1 Journal article (refereed)
Inclusive J/ψ production at midrapidity in pp collisions at √s = 13 TeV (2021)

ALICE Collaboration. (2021). Inclusive J/ψ production at midrapidity in pp collisions at √s = 13 TeV. European Physical Journal C, 81(12), Article 1121. https://doi.org/10.1140/epjc/s10052-021-09873-4

JYU authors or editors

Publication details

All authors or editors: ALICE Collaboration

Journal or series: European Physical Journal C

ISSN: 1434-6044

eISSN: 1434-6052

Publication year: 2021

Volume: 81

Issue number: 12

Article number: 1121

Publisher: Springer

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1140/epjc/s10052-021-09873-4

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/79488

Publication is parallel published: https://arxiv.org/abs/2108.01906

Abstract

We report on the inclusive J/ψ production cross section measured at the CERN Large Hadron Collider in proton–proton collisions at a center-of-mass energy √s = 13 TeV. The J/ψ mesons are reconstructed in the e+e− decay channel and the measurements are performed at midrapidity (|y|<0.9) in the transverse-momentum interval 0<40 GeV/c, using a minimum-bias data sample corresponding to an integrated luminosity Lint=32.2 nb−1 and an Electromagnetic Calorimeter triggered data sample with Lint=8.3 pb−1. The pT-integrated J/ψ production cross section at midrapidity, computed using the minimum-bias data sample, is dσ/dy|y=0=8.97±0.24 (stat)±0.48 (syst)±0.15 (lumi) μb. An approximate logarithmic dependence with the collision energy is suggested by these results and available world data, in agreement with model predictions. The integrated and pT-differential measurements are compared with measurements in pp collisions at lower energies and with several recent phenomenological calculations based on the non-relativistic QCD and Color Evaporation models.

Keywords: particle physics; quantum chromodynamics

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2021

JUFO rating: 2