Charged particle production in proton-proton collisions is studied with the LHCb detector at a centre-of-mass energy of root s = 7 TeV in different intervals of pseudorapidity eta. Charged particles are reconstructed close to the interaction region in the vertex detector, which provides high reconstruction efficiency in the eta ranges -2.5 < eta < -2.0 and 2.0 < eta < 4.5. The data were taken with a minimum bias trigger, only requiring one or more reconstructed tracks in the vertex detector. By selecting an event sample with at least one track with a transverse momentum greater than 1 GeV/c a hard QCD subsample is investigated. Several event generators are compared with the data; none are able to describe fully the multiplicity distributions or the charged particle density distribution as a function of eta. In general, the models underestimate charged particle production.

Measurement of charged particle multiplicities in pp collisions at root s=7 TeV in the forward region / R., A., C. A., B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., G., A., P. A., C., A. A., A., S., A., Y., A., J., A., R. B., A., O. A., G., F., A., L., A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 72:4(2012), pp. 1-14. [10.1140/epjc/s10052-012-1947-8]

Measurement of charged particle multiplicities in pp collisions at root s=7 TeV in the forward region

G. Casse;SARTI, ALESSIO;SCIUBBA, Adalberto;
2012

Abstract

Charged particle production in proton-proton collisions is studied with the LHCb detector at a centre-of-mass energy of root s = 7 TeV in different intervals of pseudorapidity eta. Charged particles are reconstructed close to the interaction region in the vertex detector, which provides high reconstruction efficiency in the eta ranges -2.5 < eta < -2.0 and 2.0 < eta < 4.5. The data were taken with a minimum bias trigger, only requiring one or more reconstructed tracks in the vertex detector. By selecting an event sample with at least one track with a transverse momentum greater than 1 GeV/c a hard QCD subsample is investigated. Several event generators are compared with the data; none are able to describe fully the multiplicity distributions or the charged particle density distribution as a function of eta. In general, the models underestimate charged particle production.
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of charged particle multiplicities in pp collisions at root s=7 TeV in the forward region / R., A., C. A., B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., G., A., P. A., C., A. A., A., S., A., Y., A., J., A., R. B., A., O. A., G., F., A., L., A., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - 72:4(2012), pp. 1-14. [10.1140/epjc/s10052-012-1947-8]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/493856
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