Artículo

Search for top quark decays t→qH with H→γγ using the ATLAS detector

Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Alonso, FranciscoIcon ; Anduaga, Xabier SebastianIcon ; Dova, Maria TeresaIcon ; González Silva, María LauraIcon ; Monticelli, Fernando GabrielIcon ; Otero y Garzon, Gustavo JavierIcon ; Piegaia, Ricardo NestorIcon ; Romeo, Gaston LeonardoIcon ; Tripiana, Martin FernandoIcon ; Zhuang, X.; Žibell, A.; Zieminska, D.; Zimine, N. I.; Zimmermann, C.; Zimmermann, R.; Zimmermann, S.; Zimmermann, S.; Zinonos, Z.; Ziolkowski, M.; Zobernig, G.; Zoccoli, A.; zur Nedden, M.; Zurzolo, G.; Zutshi, V.; Zwalinski, L.
Fecha de publicación: 06/2014
Editorial: Springer
Revista: Journal of High Energy Physics
ISSN: 1126-6708
e-ISSN: 1029-8479
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

A search is performed for flavour-changing neutral currents in the decay of a top quark to an up-type (c,u) quark and a Higgs boson, where the Higgs boson decays to two photons. The proton-proton collision data set used corresponds to 4.7 fb−1 at s√ = 7 ev and 20.3 fb−1 at s√ = 8 ev collected by the ATLAS experiment at the LHC. Top quark pair events are searched for in which one top quark decays to qH and the other decays to bW. Both the hadronic and the leptonic decay modes of the W boson are used. No significant signal is observed and an upper limit is set on the t→qH branching ratio of 0.79% at the 95% confidence level. The corresponding limit on the tqH coupling combination √λtcH2+λtuH2 is 0.17.
Palabras clave: Atlas , Lhc , Hep
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/29612
URL: https://arxiv.org/abs/1403.6293
DOI: http://dx.doi.org/10.1007/JHEP06(2014)008
URL: https://link.springer.com/article/10.1007%2FJHEP06%282014%29008
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Citación
Aad, G.; Abajyan, T.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; et al.; Search for top quark decays t→qH with H→γγ using the ATLAS detector; Springer; Journal of High Energy Physics; 8; 6-2014; 1-45
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