Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 TeV
A search for the pair production of heavy vectorlike partners T and B of the top and bottom quarks has been performed by the CMS experiment at the CERN LHC using proton–proton collisions at √s = 13 TeV. The data sample was collected in 2016 and corresponds to an integrated luminosity of 35.9 fb−1...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Springer New York LLC
2019
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/79787/ http://irep.iium.edu.my/79787/1/79787_Search%20for%20vector-like%20quarks.pdf http://irep.iium.edu.my/79787/2/79787_Search%20for%20vector-like%20quarks_SCOPUS.pdf http://irep.iium.edu.my/79787/15/79787_Search%20for%20vector-like%20quarks%20in%20events_wos.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 for the pair production of heavy vectorlike partners T and B of the top and bottom quarks has been
performed by the CMS experiment at the CERN LHC using
proton–proton collisions at √s = 13 TeV. The data sample
was collected in 2016 and corresponds to an integrated luminosity of 35.9 fb−1. Final states studied for TT production
include those where one of the T quarks decays via T → tZ
and the other via T → bW, tZ, or tH, where H is a Higgs
boson. For the BB case, final states include those where one
of the B quarks decays via B → bZ and the other B → tW,
bZ, or bH. Events with two oppositely charged electrons
or muons, consistent with coming from the decay of a Z
boson, and jets are investigated. The number of observed
events is consistent with standard model background estimations. Lower limits at 95% confidence level are placed on
the masses of the T and B quarks for a range of branching
fractions. Assuming 100% branching fractions for T → tZ,
and B → bZ, T and B quark mass values below 1280 and
1130 GeV, respectively, are excluded. |
| first_indexed | 2025-11-14T17:47:15Z |
| format | Article |
| id | iium-79787 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-14T17:47:15Z |
| publishDate | 2019 |
| publisher | Springer New York LLC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-797872020-07-12T07:45:10Z http://irep.iium.edu.my/79787/ Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton 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 for the pair production of heavy vectorlike partners T and B of the top and bottom quarks has been performed by the CMS experiment at the CERN LHC using proton–proton collisions at √s = 13 TeV. The data sample was collected in 2016 and corresponds to an integrated luminosity of 35.9 fb−1. Final states studied for TT production include those where one of the T quarks decays via T → tZ and the other via T → bW, tZ, or tH, where H is a Higgs boson. For the BB case, final states include those where one of the B quarks decays via B → bZ and the other B → tW, bZ, or bH. Events with two oppositely charged electrons or muons, consistent with coming from the decay of a Z boson, and jets are investigated. The number of observed events is consistent with standard model background estimations. Lower limits at 95% confidence level are placed on the masses of the T and B quarks for a range of branching fractions. Assuming 100% branching fractions for T → tZ, and B → bZ, T and B quark mass values below 1280 and 1130 GeV, respectively, are excluded. Springer New York LLC 2019 Article PeerReviewed application/pdf en http://irep.iium.edu.my/79787/1/79787_Search%20for%20vector-like%20quarks.pdf application/pdf en http://irep.iium.edu.my/79787/2/79787_Search%20for%20vector-like%20quarks_SCOPUS.pdf application/pdf en http://irep.iium.edu.my/79787/15/79787_Search%20for%20vector-like%20quarks%20in%20events_wos.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 vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 TeV. European Physical Journal C, 79 (4). pp. 1-31. ISSN 1434-6044 https://link.springer.com/content/pdf/10.1140/epjc/s10052-019-6855-8.pdf 10.1140/epjc/s10052-019-6855-8 |
| spellingShingle | Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 TeV |
| title | Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 TeV |
| title_full | Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 TeV |
| title_fullStr | Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 TeV |
| title_full_unstemmed | Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 TeV |
| title_short | Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 TeV |
| title_sort | search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 tev |
| topic | Q Science (General) QC Physics |
| url | http://irep.iium.edu.my/79787/ http://irep.iium.edu.my/79787/ http://irep.iium.edu.my/79787/ http://irep.iium.edu.my/79787/1/79787_Search%20for%20vector-like%20quarks.pdf http://irep.iium.edu.my/79787/2/79787_Search%20for%20vector-like%20quarks_SCOPUS.pdf http://irep.iium.edu.my/79787/15/79787_Search%20for%20vector-like%20quarks%20in%20events_wos.pdf |