Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/56284
Title: A study of the Z production cross-section in pp collisions at s√=7 TeV using tau final states
Author: Abellan Beteta, Carlos
Calvo Gómez, M.
Camboni, Alessandro
Comerma Montells, Albert
Domingo Bonal, F.
Garrido Beltrán, Lluís
Grabalosa Gándara, Marc
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
López 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.
LHCb Collaboration
Keywords: Hadrons
Teoria quàntica de camps
Gravitació
Teoria quàntica
Relativitat (Física)
Hadrons
Quantum field theory
Gravitation
Quantum theory
Relativity (Physics)
Issue Date: Jan-2013
Publisher: Springer Verlag
Abstract: A measurement of the inclusive Z → ττ cross-section in pp collisions at s√=7TeV is presented based on a dataset of 1.0 fb−1 collected by the LHCb detector. Candidates for Z → τ τ decays are identified through reconstructed final states with two muons, a muon and an electron, a muon and a hadron, or an electron and a hadron. The production cross-section for Z bosons, with invariant mass between 60 and 120 GeV/c 2, which decay to τ leptons with transverse momenta greater than 20 GeV/c and pseudorapidities between 2.0 and 4.5, is measured to be σ pp→Z→ττ = 71.4 ± 3.5 ± 2.8 ± 2.5 pb; the first uncertainty is statistical, the second is systematic, and the third is due to the uncertainty on the integrated luminosity. The ratio of the cross-sections for Z → τ τ to Z → μμ is determined to be 0.93 ± 0.09, where the uncertainty is the combination of statistical, systematic, and luminosity uncertainties of the two measurements.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP01(2013)111
It is part of: Journal of High Energy Physics, 2013, vol. 1301 , num. 111, p. 1-19
Related resource: http://dx.doi.org/10.1007/JHEP01(2013)111
URI: http://hdl.handle.net/2445/56284
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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