Evidence for Electroweak Production of W±W±jj in pp Collisions at s√=8 TeV with the ATLAS Detector

This Letter presents the first study of W±W±jj, same-electric-charge diboson production in association with two jets, using 20.3  fb-1 of proton-proton collision data at s=8  TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with two reconstructed same-charge leptons (e±e±, e±μ...

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Detalles Bibliográficos
Autores: Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Otero y Garzon, Gustavo Javier, Piegaia, Ricardo Nestor, Sacerdoti, Sabrina, Reisin, Hernan Diego, Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastian, Arduh, Francisco Anuar, Dova, Maria Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernan Pablo, Zhukov, K., Zibell, A., Zieminska, D., Zimine, N. I., Zimmermann, C., Zimmermann, R., Zimmermann, S., Ziolkowski, M., Zobernig, G., Zoccoli, A., Nedden, M. zur, Zurzolo, G., Zutshi, V., Zwalinski, L., The ATLAS Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/102159
Acceso en línea:http://hdl.handle.net/11336/102159
Access Level:acceso abierto
Palabra clave:ATLAS
LHC
Hep
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
Descripción
Sumario:This Letter presents the first study of W±W±jj, same-electric-charge diboson production in association with two jets, using 20.3  fb-1 of proton-proton collision data at s=8  TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with two reconstructed same-charge leptons (e±e±, e±μ±, and μ±μ±) and two or more jets are analyzed. Production cross sections are measured in two fiducial regions, with different sensitivities to the electroweak and strong production mechanisms. First evidence for W±W±jj production and electroweak-only W±W±jj production is observed with a significance of 4.5 and 3.6 standard deviations, respectively. The measured production cross sections are in agreement with standard model predictions. Limits at 95% confidence level are set on anomalous quartic gauge couplings.

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