Search for type-III Seesaw heavy leptons in pp collisions at s√=8 TeV with the ATLAS Detector

A search for the pair-production of heavy leptons (N0 , L±) predicted by the type-III seesaw theory formulated to explain the origin of small neutrino masses is presented. The decay channels N0 → W±l ∓ (` = e, µ, τ ) and L ± → W±ν (ν = νe, νµ, ντ ) are considered. The analysis is performed using the...

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Detalles Bibliográficos
Autores: Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, Maria Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernan Pablo, Otero y Garzon, Gustavo Javier, Piegaia, Ricardo Nestor, Reisin, Hernan Diego, Sacerdoti, Sabrina, Zieminska, D., Zimine, N. I., Zimmermann, C., Zimmermann, S., Zinonos, Z., Zinser, M., Ziolkowski, M., Živković, L., Zobernig, G., Zoccoli, A., Nedden, M. zur, Zurzolo, G., Zwalinski, L., The ATLAS Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/54070
Acceso en línea:http://hdl.handle.net/11336/54070
Access Level:acceso abierto
Palabra clave:CERN
ATLAS
LHC
https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
Descripción
Sumario:A search for the pair-production of heavy leptons (N0 , L±) predicted by the type-III seesaw theory formulated to explain the origin of small neutrino masses is presented. The decay channels N0 → W±l ∓ (` = e, µ, τ ) and L ± → W±ν (ν = νe, νµ, ντ ) are considered. The analysis is performed using the final state that contains two leptons (electrons or muons), two jets from a hadronically decaying W boson, and large missing transverse momentum. The data used in the measurement correspond to an integrated luminosity of 20.3 fb−1 of pp collisions at √ s = 8 TeV collected by the ATLAS detector at the LHC. No evidence of heavy lepton pair-production is observed. Heavy leptons with masses below 325–540 GeV are excluded at the 95% confidence level, depending on the theoretical scenario considered

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