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Title: Single-inclusive production of large-pT charged particles in hadronic collisions at TeV energies and perturbative QCD predictions
Author: Arleo, François
Enterria i Adan, David G. d'
Yoon, Andre S.
Keywords: Partícules (Física nuclear)
Interaccions d'hadrons
Particles (Physics)
Hadron interactions
Issue Date: 2010
Publisher: Springer; Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Abstract: The single inclusive spectrum of charged particles with transverse momenta pT = 3 – 150 GeV/c measured at midrapidity by the CDF experiment in proton-antiproton \( \left( {p - \bar{p}} \right) \) collisions at \( \sqrt {s} = 1.96{\text{ TeV}} \) is compared to next-to-leading order (NLO) perturbative QCD calculations using the most recent parametrizations of the parton distributions and parton-to-hadron fragmentation functions. Above pT ≈ 20 GeV/c, there is a very sizeable disagreement of the Tevatron data compared to the NLO predictions and to xT-scaling expectations, suggesting a problem in the experimental data. We also present the predictions for the pT-differential charged hadron spectra and the associated theoretical uncertainties for proton-proton (p-p) collisions at LHC energies \( \left( {\sqrt {s} = 0.9 - 14{\text{ TeV}}} \right) \). Two procedures to estimate the charged hadron spectra at LHC heavy-ion collision energies \( \left(\sqrt {s} = 2.76 \right) \), 5.5 TeV) from p-p measurements are suggested.
Note: Reproducció del document publicat a:
It is part of: Journal of High Energy Physics, 2010, vol. 6, núm. 35
ISSN: 1029-8479
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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