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

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Abstract

The inclusive charged particle transverse momentum distribution is measured in proton-proton collisions at s=900 GeV 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 〈pT〉INEL=0.483±0.001 (stat.)±0.007 (syst.) GeV/c and 〈pT〉NSD=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. © 2010.

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Aamodt, K., Abel, N., Abeysekara, U., Abrahantes Quintana, A., Abramyan, A., Adamová, D., … Zynovyev, M. (2010). Transverse momentum spectra of charged particles in proton-proton collisions at s=900 GeV with ALICE at the LHC. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 693(2), 53–68. https://doi.org/10.1016/j.physletb.2010.08.026

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