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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Springer Verlag
2017
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| Subjects: | |
| Online Access: | 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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| 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. |
| building | IIUM Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-14T17:01:48Z |
| format | Article |
| id | iium-63126 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-14T17:01:48Z |
| publishDate | 2017 |
| publisher | Springer Verlag |
| recordtype | eprints |
| repository_type | Digital Repository |
| 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 |
| 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 |
| 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_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_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_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 |
| topic | Q Science (General) QC Physics |
| 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 |