Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton + jets final state in pp collisions at √s = 13 TeV
A search is presented for a heavy spin-1 resonance Z decaying to a top quark and a vector-like top quark partner T in the lepton + jets final state. The search is performed using a data set of pp collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 35.9 fb−1...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
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Springer Nature
2019
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/71727/ http://irep.iium.edu.my/71727/1/71727_Search%20for%20a%20heavy%20resonance%20decaying_article.pdf http://irep.iium.edu.my/71727/2/71727_Search%20for%20a%20heavy%20resonance%20decaying_wos.pdf http://irep.iium.edu.my/71727/3/71727_Search%20for%20a%20heavy%20resonance%20decaying_scopus.pdf |
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| 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. |
| building | IIUM Repository |
| collection | Online Access |
| description | A search is presented for a heavy spin-1 resonance Z decaying to a top quark and a vector-like top quark
partner T in the lepton + jets final state. The search is performed using a data set of pp collisions at a centre-of-mass
energy of 13 TeV corresponding to an integrated luminosity of 35.9 fb−1 as recorded by the CMS experiment at the
CERN LHC in the year 2016. The analysis is optimised for
final states arising from the T decay modes to a top quark
and a Higgs or Z boson (T → Ht, Zt). The event selection
makes use of resolved and merged top quark decay products, as well as decays of boosted Higgs bosons and Z and
W bosons using jet substructure techniques. No significant
deviation from the standard model background expectation
is observed. Exclusion limits on the product of the cross section and branching fraction for Z → tT, T → Ht, Zt, Wb
are presented for various combinations of the Z resonance
mass and the vector-like T quark mass. These results represent the most stringent limits to date for the decay mode
Z → tT → tHt. In a benchmark model with extra dimensions, invoking a heavy spin-1 resonance G∗, masses of the
G∗ between 1.5 and 2.3 TeV and between 2.0 and 2.4 TeV are
excluded for T masses of 1.2 and 1.5 TeV, respectively |
| first_indexed | 2025-11-14T17:25:56Z |
| format | Article |
| id | iium-71727 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-14T17:25:56Z |
| publishDate | 2019 |
| publisher | Springer Nature |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-717272019-07-12T02:41:19Z http://irep.iium.edu.my/71727/ Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton + jets final state in pp collisions 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 a heavy spin-1 resonance Z decaying to a top quark and a vector-like top quark partner T in the lepton + jets final state. The search is performed using a data set of pp collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 35.9 fb−1 as recorded by the CMS experiment at the CERN LHC in the year 2016. The analysis is optimised for final states arising from the T decay modes to a top quark and a Higgs or Z boson (T → Ht, Zt). The event selection makes use of resolved and merged top quark decay products, as well as decays of boosted Higgs bosons and Z and W bosons using jet substructure techniques. No significant deviation from the standard model background expectation is observed. Exclusion limits on the product of the cross section and branching fraction for Z → tT, T → Ht, Zt, Wb are presented for various combinations of the Z resonance mass and the vector-like T quark mass. These results represent the most stringent limits to date for the decay mode Z → tT → tHt. In a benchmark model with extra dimensions, invoking a heavy spin-1 resonance G∗, masses of the G∗ between 1.5 and 2.3 TeV and between 2.0 and 2.4 TeV are excluded for T masses of 1.2 and 1.5 TeV, respectively Springer Nature 2019-03-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/71727/1/71727_Search%20for%20a%20heavy%20resonance%20decaying_article.pdf application/pdf en http://irep.iium.edu.my/71727/2/71727_Search%20for%20a%20heavy%20resonance%20decaying_wos.pdf application/pdf en http://irep.iium.edu.my/71727/3/71727_Search%20for%20a%20heavy%20resonance%20decaying_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Search for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton + jets final state in pp collisions at √s = 13 TeV. European Physical Journal C, 79 (3). pp. 1-32. ISSN 1434-6044 E-ISSN 1434-6052 https://link.springer.com/content/pdf/10.1140%2Fepjc%2Fs10052-019-6688-5.pdf 10.1140/epjc/s10052-019-6688-5 |
| 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 in the lepton + jets final state in pp collisions at √s = 13 TeV |
| title | Search for a heavy resonance decaying to a top quark and a
vector-like top quark in the lepton + jets final state in pp collisions at √s = 13 TeV |
| title_full | Search for a heavy resonance decaying to a top quark and a
vector-like top quark in the lepton + jets final state in pp collisions at √s = 13 TeV |
| title_fullStr | Search for a heavy resonance decaying to a top quark and a
vector-like top quark in the lepton + jets final state in pp collisions at √s = 13 TeV |
| title_full_unstemmed | Search for a heavy resonance decaying to a top quark and a
vector-like top quark in the lepton + jets final state in pp collisions at √s = 13 TeV |
| title_short | Search for a heavy resonance decaying to a top quark and a
vector-like top quark in the lepton + jets final state in pp collisions at √s = 13 TeV |
| title_sort | search for a heavy resonance decaying to a top quark and a
vector-like top quark in the lepton + jets final state in pp collisions at √s = 13 tev |
| topic | Q Science (General) QC Physics |
| url | http://irep.iium.edu.my/71727/ http://irep.iium.edu.my/71727/ http://irep.iium.edu.my/71727/ http://irep.iium.edu.my/71727/1/71727_Search%20for%20a%20heavy%20resonance%20decaying_article.pdf http://irep.iium.edu.my/71727/2/71727_Search%20for%20a%20heavy%20resonance%20decaying_wos.pdf http://irep.iium.edu.my/71727/3/71727_Search%20for%20a%20heavy%20resonance%20decaying_scopus.pdf |