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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/97989
Measurement of charged particle multiplicities in pp collisions at t √s =7 TeV in the forward region
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Charged particle production in proton-proton collisions is studied with the LHCb detector at a centre-of-mass energy of √s = 7 TeV in different intervals of pseudorapidity η. Charged particles are reconstructed close to the interaction region in the vertex detector, which provides high reconstruction efficiency in the η ranges −2.5 <η< −2.0 and 2.0 <η< 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 η. In general, the models underestimate charged particle production.
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ABELLAN BETETA, Carlos, et al. Measurement of charged particle multiplicities in pp collisions at t √s =7 TeV in the forward region. European Physical Journal C. 2012. Vol. 72, num. 4, pags. 1947. ISSN 1434-6044. [consulted: 22 of May of 2026]. Available at: https://hdl.handle.net/2445/97989