Search for a W´ boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state

Abstract: A search for a heavy W´resonance decaying to one B or T vector-like quark and a top or bottom quark, respectively, is presented. The search uses proton-proton collision data collected in 2016 with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb−1 at √ s =...

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Detalles Bibliográficos
Autores: Sirunyan, A. M., Cabrillo Bartolomé, José Iban|||0000-0002-0367-4022, Calderón Tazón, Alicia|||0000-0002-7205-2040, Chazín Quero, Bárbara, Duarte Campderros, Jorge|||0000-0003-0687-5214, Fernández García, Marcos|||0000-0002-4824-1087, Fernández Manteca, Pedro José|||0000-0003-2566-7496, García Alonso, Andrea, García Ferrero, Juan, Gómez Gramuglio, Gervasio|||0000-0002-1077-6553, López Virto, María Amparo, Marco de Lucas, Jesús|||0000-0001-7914-8494, Martínez Rivero, Celso, Martínez Ruiz del Árbol, Pablo|||0000-0002-7737-5121, Matorras Weinig, Francisco|||0000-0003-4295-5668, Piedra Gómez, Jonatan|||0000-0002-9157-1700, Prieëls, Cédric|||0000-0003-3353-559X, Rodrigo Anoro, Teresa, Ruiz Jimeno, Alberto|||0000-0002-3639-0368, Scodellaro, Luca|||0000-0002-4974-8330, Trevisani, Nicolo, Vila Álvarez, Iván |||0000-0002-6797-7209, Vilar Cortabitarte, Rocío|||0000-0003-2045-8054
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/18513
Acceso en línea:http://hdl.handle.net/10902/18513
Access Level:acceso abierto
Palabra clave:Beyond Standard Model
Hadron-Hadron scattering (experiments)
vector-like quarks
Descripción
Sumario:Abstract: A search for a heavy W´resonance decaying to one B or T vector-like quark and a top or bottom quark, respectively, is presented. The search uses proton-proton collision data collected in 2016 with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb−1 at √ s = 13 TeV. Both decay channels result in a final state with a top quark, a Higgs boson, and a b quark, each produced with significant energy. The all-hadronic decays of both the Higgs boson and the top quark are considered. The finalstate jets, some of which correspond to merged decay products of a boosted top quark and a Higgs boson, are selected using jet substructure techniques, which help to suppress standard model backgrounds. A W´ boson signal would appear as a narrow peak in the invariant mass distribution of these jets. No significant deviation in data with respect to the standard model background predictions is observed. Cross section upper limits on W´boson production in the top quark, Higgs boson, and b quark decay mode are set as a function of the W´ mass, for several vector-like quark mass hypotheses. These are the first limits for W0 boson production in this decay channel, and cover a range of 0.01 to 0.43 pb in the W´ mass range between 1.5 and 4.0 TeV.

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