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Title: | Measurement of charged particle multiplicities in pp collisions at t √s =7 TeV in the forward region |
Author: | Abellan Beteta, Carlos Calvo Gómez, Míriam Camboni, Alessandro Comerma Montells, Albert Domingo Bonal, Francesc Garrido Beltrán, Lluís Gascón Fora, David Grabalosa Gándara, Marc Graciani Díaz, Ricardo Graugés Pous, Eugeni López Asamar, Elias Musy, Marco Pérez-Calero Yzquierdo, Antonio Picatoste Olloqui, Eduardo Pie Valls, B. (Blai) Potterat, Cédric Puig Navarro, Albert Roselló, M. Ruiz, Hugo (Ruiz Pérez) Vázquez Gómez, Ricard Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Teoria quàntica de camps Gravitació Relativitat (Física) Teoria quàntica Hadrons Quantum field theory Gravitation Relativity (Physics) Quantum theory Hadrons |
Issue Date: | 20-Apr-2012 |
Publisher: | Società Italiana di Fisica & Springer Verlag |
Abstract: | 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. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1140/epjc/s10052-012-1947-8 |
It is part of: | European Physical Journal C, 2012, vol. 72, num. 4, p. 1947 |
URI: | http://hdl.handle.net/2445/97989 |
Related resource: | http://dx.doi.org/10.1140/epjc/s10052-012-1947-8 |
ISSN: | 1434-6044 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Física de la Matèria Condensada) Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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