Measurement of the W+W- cross section in √s=7TeV pp collisions with ATLAS

This Letter presents a measurement of the W+W- production cross section in √s=7TeV pp collisions by the ATLAS experiment, using 34pb-1 of integrated luminosity produced by the Large Hadron Collider at CERN. Selecting events with two isolated leptons, each either an electron or a muon, 8 candidate ev...

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Detalles Bibliográficos
Autores principales: Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín Fernando, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Física
ATLAS experiment
Large Hadron Collider
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85616
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:This Letter presents a measurement of the W+W- production cross section in √s=7TeV pp collisions by the ATLAS experiment, using 34pb-1 of integrated luminosity produced by the Large Hadron Collider at CERN. Selecting events with two isolated leptons, each either an electron or a muon, 8 candidate events are observed with an expected background of 1.7±0.6 events. The measured cross section is 41-16+20(stat) ±5(syst)±1(lumi)pb, which is consistent with the standard model prediction of 44±3pb calculated at next-to-leading order in QCD.

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