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Abstract:

A search is presented for the pair production of heavy vector-like B quarks, primarily targeting B quark decays into a W boson and a top 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, characterised by a high-transverse-momentum isolated electron or muon, large missing transverse momentum, and multiple jets, of which at least one is b-tagged. No significant deviation from the Standard Model expectation is observed. The 95% confidence level lower limit on the B mass is 1350 GeV assuming a 100% branching ratio to Wt. In the SU(2) singlet scenario, the lower mass limit is 1170 GeV. The 100% branching ratio limits are found to be also applicable to heavy vector-like X production, with charge +5/3, that decay into Wt. This search is also sensitive to a heavy vector-like B quark decaying into other final states (Zb and Hb) and thus mass limits on B production are set as a function of the decay branching ratios.[Figure not available: see fulltext.]. © 2018, The Author(s).

Registro:

Documento: Artículo
Título:Search for pair production of heavy vector-like quarks decaying into high-p T W bosons and top quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector
Autor:Aaboud, M. et al.
Este artículo contiene 2920 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2920 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Exotics; Hadron-Hadron scattering (experiments); vector-like quarks
Año:2018
Volumen:2018
Número:8
DOI: http://dx.doi.org/10.1007/JHEP08(2018)048
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_v2018_n8_p_Aaboud

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Citas:

---------- APA ----------
(2018) . Search for pair production of heavy vector-like quarks decaying into high-p T W bosons and top quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics, 2018(8).
http://dx.doi.org/10.1007/JHEP08(2018)048
---------- CHICAGO ----------
Aaboud, M. "Search for pair production of heavy vector-like quarks decaying into high-p T W bosons and top quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector" . Journal of High Energy Physics 2018, no. 8 (2018).
http://dx.doi.org/10.1007/JHEP08(2018)048
---------- MLA ----------
Aaboud, M. "Search for pair production of heavy vector-like quarks decaying into high-p T W bosons and top 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. 2018, no. 8, 2018.
http://dx.doi.org/10.1007/JHEP08(2018)048
---------- VANCOUVER ----------
Aaboud, M. Search for pair production of heavy vector-like quarks decaying into high-p T W bosons and top quarks in the lepton-plus-jets final state in pp collisions at √s=13 TeV with the ATLAS detector. J. High Energy Phys. 2018;2018(8).
http://dx.doi.org/10.1007/JHEP08(2018)048