Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/58783
Title: Measurement of the cross-section for Z → e+e- production in pp collisions at s√=7 TeV
Author: Abellan Beteta, Carlos
Calvo Gómez, M.
Camboni, Alessandro
Comerma Montells, Albert
Domingo Bonal, F.
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Lopez Asamar, E.
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Pie Valls, B. (Blai)
Potterat, Cédric
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Vázquez Gómez, R.
Vilasis-Cardona, X.
Keywords: Hadrons
Cromodinàmica quàntica
Teoria quàntica de camps
Gravitació
Relativitat (Física)
Teoria quàntica
Hadrons
Quantum chromodynamics
Quantum field theory
Gravitation
Relativity (Physics)
Quantum theory
Issue Date: Feb-2013
Publisher: Springer Verlag
Abstract: A measurement of the cross-section for pp → Z → e+e− is presented using data at s√=7 TeV corresponding to an integrated luminosity of 0.94 fb−1. The process is measured within the kinematic acceptance p T > 20 GeV/c and 2 < η < 4.5 for the daughter electrons and dielectron invariant mass in the range 60<br>120 GeV/c 2. The cross-section is determined to be $\sigma \left( {\mathrm{pp}\to \mathrm{Z}\to {{\mathrm{e}}^{+}}{{\mathrm{e}}^{-}}} \right)=76.0\pm 0.8\pm 2.0\pm 2.6\;\mathrm{pb}$ where the first uncertainty is statistical, the second is systematic and the third is the uncertainty in the luminosity. The measurement is performed as a function of Z rapidity and as a function of an angular variable which is closely related to the Z transverse momentum. The results are compared with previous LHCb measurements and with theoretical predictions from QCD.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP02(2013)106
It is part of: Journal of High Energy Physics, 2013, vol. 2013, num. 2, p. 106
Related resource: http://dx.doi.org/10.1007/JHEP02(2013)106
URI: http://hdl.handle.net/2445/58783
ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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