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Abstract:

A search is presented for the pair production of heavy vector-like T quarks, primarily targeting the T quark decays to a W boson and a b-quark. The search is based on 36.1 fb −1 of pp collisions at s=13 TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Data are analysed in the lepton-plus-jets final state, including at least one b-tagged jet and a large-radius jet identified as originating from the hadronic decay of a high-momentum W boson. No significant deviation from the Standard Model expectation is observed in the reconstructed T mass distribution. The observed 95% confidence level lower limit on the T mass are 1350 GeV assuming 100% branching ratio to Wb. In the SU(2) singlet scenario, the lower mass limit is 1170 GeV. This search is also sensitive to a heavy vector-like B quark decaying to Wt and other final states. The results are thus reinterpreted to provide a 95% confidence level lower limit on the B quark mass at 1250 GeV assuming 100% branching ratio to Wt; in the SU(2) singlet scenario, the limit is 1080 GeV. Mass limits on both T and B production are also set as a function of the decay branching ratios. The 100% branching ratio limits are found to be applicable to heavy vector-like Y and X production that decay to Wb and Wt, respectively. © 2017, The Author(s).

Registro:

Documento: Artículo
Título:Search for pair production of heavy vector-like quarks decaying to high-p T W bosons and b quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector
Autor:The ATLAS collaboration et al.
Este artículo contiene 2871 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2871 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Exotics; Hadron-Hadron scattering (experiments)
Año:2017
Volumen:2017
Número:10
DOI: http://dx.doi.org/10.1007/JHEP10(2017)141
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2017_n10_p_TheATLAScollaboration

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Citas:

---------- APA ----------
(2017) . Search for pair production of heavy vector-like quarks decaying to high-p T W bosons and b quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics, 2017(10).
http://dx.doi.org/10.1007/JHEP10(2017)141
---------- CHICAGO ----------
The ATLAS collaboration. "Search for pair production of heavy vector-like quarks decaying to high-p T W bosons and b quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector" . Journal of High Energy Physics 2017, no. 10 (2017).
http://dx.doi.org/10.1007/JHEP10(2017)141
---------- MLA ----------
The ATLAS collaboration. "Search for pair production of heavy vector-like quarks decaying to high-p T W bosons and b quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector" . Journal of High Energy Physics, vol. 2017, no. 10, 2017.
http://dx.doi.org/10.1007/JHEP10(2017)141
---------- VANCOUVER ----------
The ATLAS collaboration. Search for pair production of heavy vector-like quarks decaying to high-p T W bosons and b quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector. J. High Energy Phys. 2017;2017(10).
http://dx.doi.org/10.1007/JHEP10(2017)141