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Measurement of the W to tau nu Cross Section in pp Collisions at sqrt(s) = 7 TeV with the ATLAS experiment

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Measurement of the W to tau nu Cross Section in pp Collisions at sqrt(s) = 7 TeV with the ATLAS experiment

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ATLAS Collaboration; Mitsou, Vasiliki; Ferrer Soria, Antonio; Fiorini, Luca; Ros Martínez, Eduardo; Fuster Verdú, Juan A.; García García, Carmen; Cabrera Urbán, Susana; Martí García, Salvador; Salt Cairols, José; Lacasta Llácer, Carlos; Valls Ferrer, Juan Antonio; Castillo Giménez, María Victoria; Higón Rodríguez, Emilio; González de la Hoz, Santiago; Kaci, Mohammed; Hernández Jiménez, Yesenia; Lacuesta Miquel, Vicente; Villaplana Pérez, Miguel

Aquest document és un/a article, creat/da en: 2012

Este documento está disponible también en : 10.1016/j.physletb.2011.11.057

The cross section for the production of W bosons with subsequent decay W -> tau nu(tau) is measured with the ATLAS detector at the LHC. The analysis is based on a data sample that was recorded in 2010 at a proton-proton center-of-mass energy of root s = 7 TeV and corresponds to an integrated luminosity of 34 pb(-1). The cross section is measured in a region of high detector acceptance and then extrapolated to the full phase space. The product of the total W production cross section and the W -> tau nu(tau) branching ratio is measured to be sigma(tot)(W -> tau nu tau) = 11.1 +/- 0.3 (stat) +/- 1.7 (syst) +/- 0.4 (lumi) nb.

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