Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV

A search is performed for third-generation scalar leptoquarks and heavy righthanded neutrinos in events containing one electron or muon, one hadronically decaying τ lepton, and at least two jets, using a √ s = 13 TeV pp collision data sample corresponding to an integrated luminosity of 12.9 fb-1...

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Main Authors:	Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Bergauer, Thomas, Md. Ali, Mohd. Adli
Format:	Article
Language:	English English
Published:	Springer Verlag 2017
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/63126/ http://irep.iium.edu.my/63126/ http://irep.iium.edu.my/63126/ http://irep.iium.edu.my/63126/1/63126_Search%20for%20third-generation%20scalar_article.pdf http://irep.iium.edu.my/63126/2/63126_Search%20for%20third-generation%20scalar_scopus.pdf

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spelling	iium-631262019-08-30T07:17:36Z http://irep.iium.edu.my/63126/ Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Q Science (General) QC Physics A search is performed for third-generation scalar leptoquarks and heavy righthanded neutrinos in events containing one electron or muon, one hadronically decaying τ lepton, and at least two jets, using a √ s = 13 TeV pp collision data sample corresponding to an integrated luminosity of 12.9 fb-1 collected with the CMS detector at the LHC in 2016. The number of observed events is found to be in agreement with the standard model prediction. A limit is set at 95% confidence level on the product of the leptoquark pair production cross section and β 2 , where β is the branching fraction of leptoquark decay to a τ lepton and a bottom quark. Assuming β = 1, third-generation leptoquarks with masses below 850 GeV are excluded at 95% confidence level. An additional search based on the same event topology involves heavy right-handed neutrinos, NR, and right-handed W bosons, WR, arising in a left-right symmetric extension of the standard model. In this search, WR bosons are assumed to decay to a tau lepton and NR followed by the decay of the NR to a tau lepton and an off-shell WR boson. Assuming the mass of the right-handed neutrino to be half of the mass of the right-handed W boson, WR boson masses below 2.9 TeV are excluded at 95% confidence level. These results improve on the limits from previous searches for third-generation leptoquarks and heavy right-handed neutrinos with τ leptons in the final state. Springer Verlag 2017-07-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/63126/1/63126_Search%20for%20third-generation%20scalar_article.pdf application/pdf en http://irep.iium.edu.my/63126/2/63126_Search%20for%20third-generation%20scalar_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2017) Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV. Journal of High Energy Physics, 2017 (7). pp. 1-34. ISSN 11266708 E-ISSN 1029-8479 https://link.springer.com/content/pdf/10.1007%2FJHEP07%282017%29121.pdf 10.1007/JHEP07(2017)121
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	Q Science (General) QC Physics
spellingShingle	Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV
description	A search is performed for third-generation scalar leptoquarks and heavy righthanded neutrinos in events containing one electron or muon, one hadronically decaying τ lepton, and at least two jets, using a √ s = 13 TeV pp collision data sample corresponding to an integrated luminosity of 12.9 fb-1 collected with the CMS detector at the LHC in 2016. The number of observed events is found to be in agreement with the standard model prediction. A limit is set at 95% confidence level on the product of the leptoquark pair production cross section and β 2 , where β is the branching fraction of leptoquark decay to a τ lepton and a bottom quark. Assuming β = 1, third-generation leptoquarks with masses below 850 GeV are excluded at 95% confidence level. An additional search based on the same event topology involves heavy right-handed neutrinos, NR, and right-handed W bosons, WR, arising in a left-right symmetric extension of the standard model. In this search, WR bosons are assumed to decay to a tau lepton and NR followed by the decay of the NR to a tau lepton and an off-shell WR boson. Assuming the mass of the right-handed neutrino to be half of the mass of the right-handed W boson, WR boson masses below 2.9 TeV are excluded at 95% confidence level. These results improve on the limits from previous searches for third-generation leptoquarks and heavy right-handed neutrinos with τ leptons in the final state.
format	Article
author	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli
author_facet	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli
author_sort	Sirunyan, A. M.
title	Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV
title_short	Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV
title_full	Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV
title_fullStr	Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV
title_full_unstemmed	Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV
title_sort	search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 tev
publisher	Springer Verlag
publishDate	2017
url	http://irep.iium.edu.my/63126/ http://irep.iium.edu.my/63126/ http://irep.iium.edu.my/63126/ http://irep.iium.edu.my/63126/1/63126_Search%20for%20third-generation%20scalar_article.pdf http://irep.iium.edu.my/63126/2/63126_Search%20for%20third-generation%20scalar_scopus.pdf
first_indexed	2023-09-18T21:29:34Z
last_indexed	2023-09-18T21:29:34Z
_version_	1777412419767762944

Search for third-generation scalar leptoquarks and heavy right-handed neutrinos in final states with two tau leptons and two jets in proton-proton collisions at √s=13 TeV

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