Journal article
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 : JHEP, Vol.2017, 121
07/26/2017
DOI: 10.1007/JHEP07(2017)121
Abstract
A search is performed for third-generation scalar leptoquarks and heavy right-handed 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.
Details
- Title: Subtitle
- 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
- Creators
- CMS Collaboration (Institution)A. M. Sirunyan - A. Alikhanyan National LaboratoryA Tumasyan - A. Alikhanyan National Laboratory
- Contributors
- B. Bilki (Contributor) - University of IowaW Clarida (Contributor) - University of IowaKamuran Dilsiz (Contributor) - University of Iowa, Physics and AstronomyS. Durgut (Contributor) - University of IowaR. P. Gandrajula (Contributor) - University of IowaM. Haytmyradov (Contributor) - University of IowaV Khristenko (Contributor) - University of IowaJ-P Merlo (Contributor) - University of IowaH Mermerkaya (Contributor) - University of IowaAlexi Mestvirishvili (Contributor) - University of Iowa, Physics and AstronomyA. Moeller (Contributor) - University of IowaJane M Nachtman (Contributor) - University of Iowa, Physics and AstronomyHasan Ogul (Contributor) - University of Iowa, Physics and AstronomyYasar Onel (Contributor) - University of Iowa, Physics and AstronomyF. Ozok (Contributor) - University of IowaAldo Penzo (Contributor) - University of Iowa, Physics and AstronomyC. Snyder (Contributor) - University of IowaE. Tiras (Contributor) - University of IowaJames W Wetzel (Contributor) - University of Iowa, Physics and AstronomyKai Yi (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Journal of high energy physics : JHEP, Vol.2017, 121
- DOI
- 10.1007/JHEP07(2017)121
- ISSN
- 1126-6708
- eISSN
- 1029-8479
- Publisher
- Springer
- Language
- English
- Date published
- 07/26/2017
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984440558802771
Metrics
4 Record Views