Transverse momentum spectra of charged particles in proton-proton collisions at s=900 GeV with ALICE at the LHC

Research output: Contribution to journalArticle


  • ALICE Collaboration

Colleges, School and Institutes


The inclusive charged particle transverse momentum distribution is measured in proton–proton collisions at View the MathML source at the LHC using the ALICE detector. The measurement is performed in the central pseudorapidity region (|η|<0.8) over the transverse momentum range 0.15<pT<10 GeV/c. The correlation between transverse momentum and particle multiplicity is also studied. Results are presented for inelastic (INEL) and non-single-diffractive (NSD) events. The average transverse momentum for |η|<0.8 is INEL〈pT〉=0.483±0.001 (stat.)±0.007 (syst.) GeV/c and NSD〈pT〉=0.489±0.001 (stat.)±0.007 (syst.) GeV/c, respectively. The data exhibit a slightly larger 〈pT〉 than measurements in wider pseudorapidity intervals. The results are compared to simulations with the Monte Carlo event generators PYTHIA and PHOJET.


Original languageEnglish
Pages (from-to)53-68
Number of pages16
JournalPhysics Letters B
Issue number2
Publication statusPublished - 27 Sep 2010


  • ALICE, LHC, pp, 900 GeV, Transverse momentum, PYTHIA