Search for electroweak production of a vector-like T quark using fully hadronic final states

Albert M Sirunyan; Armen Tumasyan; Wolfgang Adam; Federico Ambrogi; Thomas Bergauer; Johannes Brandstetter; Marko Dragicevic; Janos Erö; Alberto Escalante del Valle; Martin Flechl; Rudolf Fruehwirth; Manfred Jeitler; Natascha Krammer; Ilse Krätschmer; Dietrich Liko; Thomas Madlener; Ivan Mikulec; Navid Rad; Jochen Schieck; Robert Schöfbeck; Markus Spanring; Daniel Spitzbart; Wolfgang Waltenberger; Claudia-Elisabeth Wulz; Mateusz Zarucki; Vladimir Drugakov; Vladimir Mossolov; Juan Suarez Gonzalez; Mohamed Rashad Darwish; Eddi A de Wolf; Davide Di Croce; Xavier Janssen; Aleksandra Lelek; Maxim Pieters; Haifa Rejeb Sfar; Hans van Haevermaet; Pierre van Mechelen; Senne van Putte; Nick van Remortel; Freya Blekman; Emil Sørensen Bols; Simranjit Singh Chhibra; Jorgen d'Hondt; Jarne de Clercq; Denys Lontkovskyi; Steven Lowette; Ivan Marchesini; Seth Moortgat; Quentin Python; Kirill Skovpen; Stefaan Tavernier; Walter van Doninck; Petra van Mulders; Diego Beghin; Bugra Bilin; Hugues Brun; Barbara Clerbaux; Gilles de Lentdecker; Hugo Delannoy; Brian Dorney; Laurent Favart; Anastasia Grebenyuk; Amandeep Kaur Kalsi; Andrey Popov; Nicolas Postiau; Elizabeth Starling; Laurent Thomas; Catherine Vander Velde; Pascal Vanlaer; David Vannerom; Tom Cornelis; Didar Dobur; Illia Khvastunov; Marek Niedziela; Christos Roskas; Daniele Trocino; Michael Tytgat; Willem Verbeke; Basile Vermassen; Martina Vit; Nicolas Zaganidis; Olivier Bondu; Giacomo Bruno; Claudio Caputo; Pieter David; Christophe Delaere; Martin Delcourt; Andrea Giammanco; Vincent Lemaitre; Alessio Magitteri; Jessica Prisciandaro; Alessia Saggio; Miguel Vidal Marono; Pietro Vischia; Joze Zobec; Fábio Lúcio Alves; Gilvan Alves; Gilson Correia Silva; Carsten Hensel; Arthur Moraes; CMS Collaboration; John Chou

doi:10.1007/JHEP01(2020)036

Back

Search for electroweak production of a vector-like T quark using fully hadronic final states

Journal article

Peer reviewed

Search for electroweak production of a vector-like T quark using fully hadronic final states

Albert M Sirunyan, Armen Tumasyan, Wolfgang Adam, Federico Ambrogi, Thomas Bergauer, Johannes Brandstetter, Marko Dragicevic, Janos Erö, Alberto Escalante del Valle, Martin Flechl, …

JHEP, Vol.1(1), pp.036-64

2020

DOI: https://doi.org/10.1007/JHEP01(2020)036

Abstract

High Energy Physics - Experiment

Physics

A search is performed for electroweak production of a vector-like top quark partner T of charge 2/3 in association with a top or bottom quark, using proton-proton collision data at $ \sqrt{s} $ = 13 TeV collected by the CMS experiment at the LHC in 2016. The data sample corresponds to an integrated luminosity of 35.9 fb$^{−1}$. The search targets T quarks over a wide range of masses and fractional widths, decaying to a top quark and either a Higgs boson or a Z boson in fully hadronic final states. The search is performed using two experimentally distinct signatures that depend on whether or not each quark from the decays of the top quark, Higgs boson, or Z boson produces an individual resolved jet. Jet substructure, b tagging, and kinematic variables are used to identify the top quark and boson jets, and also to suppress the standard model backgrounds. The data are found to be consistent with the expected backgrounds. Upper limits at 95% confidence level are set on the cross sections for T quark-mediated production of tHQq, tZQq, and their sum, where Q is the associated top or bottom heavy quark and q is another associated quark. The limits are given for each search signature for various T quark widths up to 30% of the T quark mass, and are between 2 pb and 20 fb for T quark masses in the range 0.6–2.6 TeV. These results are significantly more sensitive than prior searches for electroweak single production of T → tH and represent the first constraints on T → tZ using hadronic decays of the Z boson with this production mode.[graphic not available: see fulltext]

Metrics

1 Record Views

23 Times Cited - Web of Science

See more details

Details

Title: Search for electroweak production of a vector-like T quark using fully hadronic final states
Creators: Albert M Sirunyan - Alikhanyan National Laboratory
Armen Tumasyan - Alikhanyan National Laboratory
Wolfgang Adam
Federico Ambrogi
Thomas Bergauer
Johannes Brandstetter
Marko Dragicevic
Janos Erö
Alberto Escalante del Valle
Martin Flechl
Rudolf Fruehwirth
Manfred Jeitler - TU Wien
Natascha Krammer
Ilse Krätschmer
Dietrich Liko
Thomas Madlener
Ivan Mikulec
Navid Rad
Jochen Schieck - TU Wien
Robert Schöfbeck
Markus Spanring
Daniel Spitzbart
Wolfgang Waltenberger
Claudia-Elisabeth Wulz - TU Wien
Mateusz Zarucki
Vladimir Drugakov
Vladimir Mossolov
Juan Suarez Gonzalez
Mohamed Rashad Darwish - University of Antwerp
Eddi A de Wolf - University of Antwerp
Davide Di Croce - University of Antwerp
Xavier Janssen - University of Antwerp
Aleksandra Lelek - University of Antwerp
Maxim Pieters - University of Antwerp
Haifa Rejeb Sfar
Hans van Haevermaet - University of Antwerp
Pierre van Mechelen - University of Antwerp
Senne van Putte - University of Antwerp
Nick van Remortel - University of Antwerp
Freya Blekman - Vrije Universiteit Brussel
Emil Sørensen Bols - Vrije Universiteit Brussel
Simranjit Singh Chhibra - Vrije Universiteit Brussel
Jorgen d'Hondt - Vrije Universiteit Brussel
Jarne de Clercq - Vrije Universiteit Brussel
Denys Lontkovskyi - Vrije Universiteit Brussel
Steven Lowette - Vrije Universiteit Brussel
Ivan Marchesini - Vrije Universiteit Brussel
Seth Moortgat - Vrije Universiteit Brussel
Quentin Python - Vrije Universiteit Brussel
Kirill Skovpen - Vrije Universiteit Brussel
Stefaan Tavernier - Vrije Universiteit Brussel
Walter van Doninck - Vrije Universiteit Brussel
Petra van Mulders - Vrije Universiteit Brussel
Diego Beghin - Université Libre de Bruxelles
Bugra Bilin - Université Libre de Bruxelles
Hugues Brun - Université Libre de Bruxelles
Barbara Clerbaux - Université Libre de Bruxelles
Gilles de Lentdecker - Université Libre de Bruxelles
Hugo Delannoy - Université Libre de Bruxelles
Brian Dorney - Université Libre de Bruxelles
Laurent Favart - Université Libre de Bruxelles
Anastasia Grebenyuk - Université Libre de Bruxelles
Amandeep Kaur Kalsi - Université Libre de Bruxelles
Andrey Popov - Université Libre de Bruxelles
Nicolas Postiau - Université Libre de Bruxelles
Elizabeth Starling - Université Libre de Bruxelles
Laurent Thomas - Université Libre de Bruxelles
Catherine Vander Velde
Pascal Vanlaer - Université Libre de Bruxelles
David Vannerom - Université Libre de Bruxelles
Tom Cornelis - Ghent University
Didar Dobur - Ghent University
Illia Khvastunov - Ghent University
Marek Niedziela - Ghent University
Christos Roskas - Ghent University
Daniele Trocino - Ghent University
Michael Tytgat - Ghent University
Willem Verbeke - Ghent University
Basile Vermassen - Ghent University
Martina Vit - Ghent University
Nicolas Zaganidis - Ghent University
Olivier Bondu - UCLouvain
Giacomo Bruno - UCLouvain
Claudio Caputo - UCLouvain
Pieter David
Christophe Delaere - UCLouvain
Martin Delcourt - UCLouvain
Andrea Giammanco - UCLouvain
Vincent Lemaitre - UCLouvain
Alessio Magitteri - UCLouvain
Jessica Prisciandaro - UCLouvain
Alessia Saggio - UCLouvain
Miguel Vidal Marono
Pietro Vischia - UCLouvain
Joze Zobec - UCLouvain
Fábio Lúcio Alves
Gilvan Alves
Gilson Correia Silva
Carsten Hensel
Arthur Moraes
CMS Collaboration
John Chou - Physics and Astronomy (SAS)
Publication Details: JHEP, Vol.1(1), pp.036-64
Date published: 2020
Academic Unit: Physics and Astronomy (SAS)
Language: English
Resource Type: Journal article
Identifiers: 991031758479904646