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Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV

A search is presented for massive spin-1 Z0 resonances decaying to a top quark and a heavy vector-like top quark partner T. The search is based on a 2.6 fb−1 sample of proton-proton collisions at 13 TeV collected with the CMS detector at the LHC. The analysis is optimized for final states in wh...

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Main Authors: Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli
Format: Article
Language:English
English
Published: Elsevier 2017
Subjects:
Q Science (General)
QC Physics
Online Access:http://irep.iium.edu.my/63056/1/63056_Search%20for%20a%20heavy%20resonance%20decaying%20_article.pdf
http://irep.iium.edu.my/63056/2/63056_Search%20for%20a%20heavy%20resonance%20decaying%20_scopus.pdf
http://irep.iium.edu.my/63056/
https://link.springer.com/content/pdf/10.1007%2FJHEP09%282017%29053.pdf
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spelling my.iium.irep.630562018-11-05T03:07:27Z http://irep.iium.edu.my/63056/ Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics A search is presented for massive spin-1 Z0 resonances decaying to a top quark and a heavy vector-like top quark partner T. The search is based on a 2.6 fb−1 sample of proton-proton collisions at 13 TeV collected with the CMS detector at the LHC. The analysis is optimized for final states in which the T quark decays to a W boson and a bottom quark. The focus is on all-jet final states in which both the W boson and the top quark decay into quarks that evolve into jets. The decay products of the top quark and of the W boson are assumed to be highly Lorentz-boosted and cannot be reconstructed as separate jets, but are instead reconstructed as merged, wide jets. Techniques for the identification of jet substructure and jet flavour are used to distinguish signal from background events. Several models for Z0 bosons decaying to T quarks are excluded at 95% confidence level, with upper limits on the cross section ranging from 0.13 to 10 pb, depending on the chosen hypotheses. This is the first search for a neutral spin-1 heavy resonance decaying to a top quark and a vector-like T quark in the all-hadronic final state Elsevier 2017-12-10 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/63056/1/63056_Search%20for%20a%20heavy%20resonance%20decaying%20_article.pdf application/pdf en http://irep.iium.edu.my/63056/2/63056_Search%20for%20a%20heavy%20resonance%20decaying%20_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2017) Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 775. pp. 315-337. ISSN 0370-2693 https://link.springer.com/content/pdf/10.1007%2FJHEP09%282017%29053.pdf 10.1016/j.physletb.2017.11.001
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic Q Science (General)
QC Physics
spellingShingle Q Science (General)
QC Physics
Sirunyan, A. M.
Tumasyan, A. R.
Adam, Wolfgang
Ambrogi, Federico
Asilar, Ece
Md. Ali, Mohd. Adli
Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV
description A search is presented for massive spin-1 Z0 resonances decaying to a top quark and a heavy vector-like top quark partner T. The search is based on a 2.6 fb−1 sample of proton-proton collisions at 13 TeV collected with the CMS detector at the LHC. The analysis is optimized for final states in which the T quark decays to a W boson and a bottom quark. The focus is on all-jet final states in which both the W boson and the top quark decay into quarks that evolve into jets. The decay products of the top quark and of the W boson are assumed to be highly Lorentz-boosted and cannot be reconstructed as separate jets, but are instead reconstructed as merged, wide jets. Techniques for the identification of jet substructure and jet flavour are used to distinguish signal from background events. Several models for Z0 bosons decaying to T quarks are excluded at 95% confidence level, with upper limits on the cross section ranging from 0.13 to 10 pb, depending on the chosen hypotheses. This is the first search for a neutral spin-1 heavy resonance decaying to a top quark and a vector-like T quark in the all-hadronic final state
format Article
author Sirunyan, A. M.
Tumasyan, A. R.
Adam, Wolfgang
Ambrogi, Federico
Asilar, Ece
Md. Ali, Mohd. Adli
author_facet Sirunyan, A. M.
Tumasyan, A. R.
Adam, Wolfgang
Ambrogi, Federico
Asilar, Ece
Md. Ali, Mohd. Adli
author_sort Sirunyan, A. M.
title Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV
title_short Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV
title_full Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV
title_fullStr Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV
title_full_unstemmed Search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 TeV
title_sort search for a heavy resonance decaying to a top quark and a vector-like top quark at √s=13 tev
publisher Elsevier
publishDate 2017
url http://irep.iium.edu.my/63056/1/63056_Search%20for%20a%20heavy%20resonance%20decaying%20_article.pdf
http://irep.iium.edu.my/63056/2/63056_Search%20for%20a%20heavy%20resonance%20decaying%20_scopus.pdf
http://irep.iium.edu.my/63056/
https://link.springer.com/content/pdf/10.1007%2FJHEP09%282017%29053.pdf
_version_ 1643617825805303808
score 13.211869

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