2024-03-28T09:57:45Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1949852021-10-22T12:04:17Zcom_10261_61com_10261_4col_10261_314
Search for single production of vector-like quarks decaying into Wb in pp collisions at √s = 13 TeV with the ATLAS detector
Álvarez Piqueras, D.
Aparisi Pozo, J.A.
Bailey, A.J.
Barranco, Laura
Cabrera, Susana
Castillo, F.L.
Castillo Mª Victoria
Cerda Alberich, L.
Costa, María José
Escobar, Carlos
Estrada, Oscar
Ferrer, Antonio
Fiorini, L.
Fullana, Esteban
Fuster, Juan
García García, Carmen
García Navarro, José Enrique
González de la Hoz, Santiago
Higón, Emilio
Jimenez Pena, Javier
Lacasta Llácer, Carlos
Lozano Bahilo, José J.
Madaffari, Daniele
Mamuzic, Judita
Martí García, Salvador
Melini, Davide
Miñano Moya, M.
Mitsou, Vasiliki A.
Rodriguez Bosca, S.
Rodriguez Rodriguez, D.
Ruiz Martínez, Arantxa
Salt, José
Santra, A.
Sánchez Martínez, Javier
Soldevila, Urmila
Valero, Alberto
Valls Ferrer, Juan Antonio
Vos, Marcel
ATLAS Collaboration
Ministerio de Economía y Competitividad (España)
A search for singly produced vector-like quarks Q, where Q can be either a T quark with charge +2/3 or a Y quark with charge −4/3, is performed in proton–proton collision data at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 36.1 fb, recorded with the ATLAS detector at the LHC in 2015 and 2016. The analysis targets Q → Wb decays where the W boson decays leptonically. No significant deviation from the expected Standard Model background is observed. Upper limits are set on the QWb coupling strength and the mixing between the Standard Model sector and a singlet T quark or a Y quark from a (B, Y) doublet or a (T, B, Y) triplet, taking into account the interference effects with the Standard Model background. The upper limits set on the mixing angle are as small as |sin θ| = 0.18 for a singlet T quark of mass 800 GeV, |sin θ| = 0.17 for a Y quark of mass 800 GeV in a (B, Y) doublet model and |sin θ| = 0.16 for a Y quark of mass 800 GeV in a (T, B, Y) triplet model. Within a (B, Y) doublet model, the limits set on the mixing parameter |sin θ| are comparable with the exclusion limits from electroweak precision observables in the mass range between about 900 GeV and 1250 GeV.[Figure not available: see fulltext.]
Peer Reviewed
2019-11-20T12:04:41Z
2019-11-20T12:04:41Z
2019-05
2019-11-20T12:04:41Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1007/JHEP05(2019)164
issn: 1029-8479
Journal of High Energy Physics 2019: 164 (2019)
http://hdl.handle.net/10261/194985
10.1007/JHEP05(2019)164
http://dx.doi.org/10.13039/501100003329
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info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2015-65652-C4-1-R
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2015-65652-C4-2-R
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2015-65652-C4-3-R
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2016-75141-C2-1-R
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