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Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at √s=13 TeV

A search for pair production of massive vector-like T and B quarks in protonproton collisions at √ s = 13 TeV is presented. The data set was collected in 2015 by the CMS experiment at the LHC and corresponds to an integrated luminosity of up to 2.6 fb−1 . The T and B quarks are assumed to decay...

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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
English
Published: Springer Verlag 2017
Subjects:
Q Science (General)
QC Physics
Online Access:http://irep.iium.edu.my/63116/1/63116_Search%20for%20pair%20production%20of%20vector-like%20T_article.pdf
http://irep.iium.edu.my/63116/2/63116_Search%20for%20pair%20production%20of%20vector-like%20T_scopus.pdf
http://irep.iium.edu.my/63116/13/63116_Search%20for%20pair%20production%20of%20vector-like%20T_WOS.pdf
http://irep.iium.edu.my/63116/
https://link.springer.com/content/pdf/10.1007%2FJHEP11%282017%29085.pdf
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spelling my.iium.irep.631162019-08-29T02:37:20Z http://irep.iium.edu.my/63116/ Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure 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 pair production of massive vector-like T and B quarks in protonproton collisions at √ s = 13 TeV is presented. The data set was collected in 2015 by the CMS experiment at the LHC and corresponds to an integrated luminosity of up to 2.6 fb−1 . The T and B quarks are assumed to decay through three possible channels into a heavy boson (either a W, Z or Higgs boson) and a third generation quark. This search is performed in final states with one charged lepton and several jets, exploiting techniques to identify W or Higgs bosons decaying hadronically with large transverse momenta. No excess over the predicted standard model background is observed. Upper limits at 95% confidence level on the T quark pair production cross section are set that exclude T quark masses below 860 GeV in the singlet, and below 830 GeV in the doublet branching fraction scenario. For other branching fraction combinations with B(T → tH) +B(T → bW) ≥ 0.4, lower limits on the T quark range from 790 to 940 GeV. Limits are also set on pair production of singlet vector-like B quarks, which can be excluded up to a mass of 730 GeV. The techniques showcased here for understanding highly-boosted final states are important as the sensitivity to new particles is extended to higher masses Springer Verlag 2017-11-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/63116/1/63116_Search%20for%20pair%20production%20of%20vector-like%20T_article.pdf application/pdf en http://irep.iium.edu.my/63116/2/63116_Search%20for%20pair%20production%20of%20vector-like%20T_scopus.pdf application/pdf en http://irep.iium.edu.my/63116/13/63116_Search%20for%20pair%20production%20of%20vector-like%20T_WOS.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 pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at √s=13 TeV. Journal of High Energy Physics, 2017 (11). pp. 1-47. ISSN 11266708 https://link.springer.com/content/pdf/10.1007%2FJHEP11%282017%29085.pdf 10.1007/JHEP11(2017)085
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
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 pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at √s=13 TeV
description A search for pair production of massive vector-like T and B quarks in protonproton collisions at √ s = 13 TeV is presented. The data set was collected in 2015 by the CMS experiment at the LHC and corresponds to an integrated luminosity of up to 2.6 fb−1 . The T and B quarks are assumed to decay through three possible channels into a heavy boson (either a W, Z or Higgs boson) and a third generation quark. This search is performed in final states with one charged lepton and several jets, exploiting techniques to identify W or Higgs bosons decaying hadronically with large transverse momenta. No excess over the predicted standard model background is observed. Upper limits at 95% confidence level on the T quark pair production cross section are set that exclude T quark masses below 860 GeV in the singlet, and below 830 GeV in the doublet branching fraction scenario. For other branching fraction combinations with B(T → tH) +B(T → bW) ≥ 0.4, lower limits on the T quark range from 790 to 940 GeV. Limits are also set on pair production of singlet vector-like B quarks, which can be excluded up to a mass of 730 GeV. The techniques showcased here for understanding highly-boosted final states are important as the sensitivity to new particles is extended to higher masses
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 pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at √s=13 TeV
title_short Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at √s=13 TeV
title_full Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at √s=13 TeV
title_fullStr Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at √s=13 TeV
title_full_unstemmed Search for pair production of vector-like T and B quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at √s=13 TeV
title_sort search for pair production of vector-like t and b quarks in single-lepton final states using boosted jet substructure in proton-proton collisions at √s=13 tev
publisher Springer Verlag
publishDate 2017
url http://irep.iium.edu.my/63116/1/63116_Search%20for%20pair%20production%20of%20vector-like%20T_article.pdf
http://irep.iium.edu.my/63116/2/63116_Search%20for%20pair%20production%20of%20vector-like%20T_scopus.pdf
http://irep.iium.edu.my/63116/13/63116_Search%20for%20pair%20production%20of%20vector-like%20T_WOS.pdf
http://irep.iium.edu.my/63116/
https://link.springer.com/content/pdf/10.1007%2FJHEP11%282017%29085.pdf
_version_ 1643619708764684288
score 13.211869

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