Measurement of the energy density as a function of pseudorapidity in proton-proton collisions at root s=13 TeV

The CMS Collaboration, A. M. Sirunyan, P. Eerola, H. Kirschenmann, J. Pekkanen, M. Voutilainen, J. Havukainen, J. K. Heikkilä, T. Järvinen, V. Karimäki, R. Kinnunen, T. Lampén, K. Lassila-Perini, S. Laurila, S. Lehti, T. Lindén, P. Luukka, T. Mäenpää, H. Siikonen, E. TuominenJ. Tuominiemi, T. Tuuva

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A measurement of the energy density in proton-proton collisions at a centre-of-mass energy of sTeV is presented. The data have been recorded with the CMS experiment at the LHC during low luminosity operations in 2015. The energy density is studied as a function of pseudorapidity in the ranges -6.6<<-5.2 and 3.15<||<5.20. The results are compared with the predictions of several models. All the models considered suggest a different shape of the pseudorapidity dependence compared to that observed in the data. A comparison with LHC proton-proton collision data at s=0.9 and 7 TeV confirms the compatibility of the data with the hypothesis of limiting fragmentation.
Original languageEnglish
Article number391
JournalEuropean Physical Journal C. Particles and Fields
Volume79
Issue number5
Number of pages24
ISSN1434-6044
DOIs
Publication statusPublished - 7 May 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences
  • INELASTIC EP SCATTERING
  • LHC
  • ANNIHILATION
  • MODEL

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