A1 Journal article (refereed)
Energy dependence of ϕ meson production at forward rapidity in pp collisions at the LHC (2021)

ALICE Collaboration. (2021). Energy dependence of ϕ meson production at forward rapidity in pp collisions at the LHC. European Physical Journal C, 81(8), Article 772. https://doi.org/10.1140/epjc/s10052-021-09545-3

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: 8

Article number: 772

Publisher: Springer

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1140/epjc/s10052-021-09545-3

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/78208

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2105.00713


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<4. Measurements of the differential cross section d2σ/dydpT 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.

Keywords: particle physics

Contributing organizations

Ministry reporting: Yes

Preliminary JUFO rating: 2

Last updated on 2021-14-10 at 08:14