2017/03/31 by CMS Collaboration, A. M. Sirunyan, A. Tumasyan +98
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Electron #Lepton #Neutrino #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Right handed #Scalar (mathematics) #hep-ex
paper · pdf · doi:10.1007/jhep07(2017)121
published as JHEP 07 (2017) 121 · Replaced with the published version. Added the journal reference and DOI. All the figures and tables, including additional supplemental figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-16-023
openalex created_date 2017/03/23 · openalex publication_date 2017/07/01 · arxiv created 2017/08/05 · arxiv updated 2017/08/08 · openalex updated_date 2026/08/08
A search is performed for third-generation scalar leptoquarks and heavy righthanded neutrinos in events containing one electron or muon, one hadronically decaying 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 2 , where is the branching fraction of leptoquark decay to a lepton and a bottom quark. Assuming = 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, N R , and right-handed W bosons, W R , arising in a left-right symmetric extension of the standard model. In this search, W R bosons are assumed to decay to a tau lepton and N R followed by the decay of the N R to a tau lepton and an off-shell W R boson. Assuming the mass of the right-handed neutrino to be half of the mass of the right-handed W boson, W R 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 leptons in the final state.