The inclusive charged particle transverse momentum distribution is measured in proton-proton collisions at sqrt{s} = 900 GeV at the LHC using the ALICE detector. The measurement is performed in the central pseudorapidity region (|eta|<0.8) over the transverse momentum range 0.15<p_T<10GeV/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 |eta|<0.8 is <p_T>_INEL=0.483+-0.001 (stat.) +- 0.007 (syst.)GeV/c and <p_T_NSD>=0.489+-0.001(stat.)+-0.007(syst.)GeV/c, respectively. The data exhibit a slightly larger <p_T> than measurements in wider pseudorapidity intervals. The results are compared to simulations with the Monte Carlo event generators PYTHIA and PHOJET.

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

BEOLE', Stefania;BIANCHI, LIVIO;BIOLCATI, EMANUELE;BOSSU', FRANCESCO;CHIAVASSA, Emilio Luciano;FERRETTI, Alessandro;GAGLIARDI, Martino;GALLIO, Mauro;INNOCENTI, GIAN MICHELE;LUPARELLO, GRAZIA;MASERA, Massimo;MILANO, LEONARDO;ORTONA, GIACOMO;POGHOSYAN, MARTIN;SICILIANO, MELINDA;SUBIETA VASQUEZ, MARTIN ALFONSO;VERCELLIN, Ermanno;
2010-01-01

Abstract

The inclusive charged particle transverse momentum distribution is measured in proton-proton collisions at sqrt{s} = 900 GeV at the LHC using the ALICE detector. The measurement is performed in the central pseudorapidity region (|eta|<0.8) over the transverse momentum range 0.15_INEL=0.483+-0.001 (stat.) +- 0.007 (syst.)GeV/c and =0.489+-0.001(stat.)+-0.007(syst.)GeV/c, respectively. The data exhibit a slightly larger than measurements in wider pseudorapidity intervals. The results are compared to simulations with the Monte Carlo event generators PYTHIA and PHOJET.
2010
693
53
68
K. Aamodt; A. Abrahantes Quintana; D. Adamov; A.M. Adare; M.M. Aggarwal; G. Aglieri Rinella; A.G. Agocs; S. Aguilar Salazar; Z. Ahammed; N. Ahmad; A....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/99501
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