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Search for type-III seesaw heavy leptons in leptonic final states in pp collisions at √s=13TeV with the ATLAS detector

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dc.contributor.authorBelotskiy, K.
dc.contributor.authorBelyaev, N. L.
dc.contributor.authorBulekov, O.
dc.contributor.authorKurova, A.
dc.contributor.authorPonomarenko, D.
dc.contributor.authorProklova, N.
dc.contributor.authorPyatiizbyantseva, D.
dc.contributor.authorRomaniouk, A.
dc.contributor.authorSmirnov, S. Y.
dc.contributor.authorSmirnov, Y.
dc.contributor.authorSoldatov, E. Y.
dc.contributor.authorTikhomirov, V. O.
dc.contributor.authorTimoshenko, S.
dc.contributor.authorVorobev, K.
dc.contributor.authorБелоцкий, Константин Михайлович
dc.contributor.authorБулеков, Олег Владимирович
dc.contributor.authorКурова, Анастасия Сергеевна
dc.contributor.authorПятиизбянцева, Диана Николаевна
dc.contributor.authorРоманюк, Анатолий Самсонович
dc.contributor.authorСмирнов, Сергей Юрьевич
dc.contributor.authorСмирнов, Юрий Сергеевич
dc.contributor.authorСолдатов, Евгений Юрьевич
dc.contributor.authorТихомиров, Владимир Олегович
dc.contributor.authorТимошенко, Сергей Леонидович
dc.contributor.authorВоробьёв, Константин Александрович
dc.date.accessioned2024-12-25T10:27:30Z
dc.date.available2024-12-25T10:27:30Z
dc.date.issued2022
dc.description.abstractA search for the pair production of heavy leptons as predicted by the type-III seesaw mechanism is presented. The search uses proton–proton collision data at a centre-of-mass energy of 13 TeV, corresponding to 139fb-1 of integrated luminosity recorded by the ATLAS detector during Run 2 of the Large Hadron Collider. The analysis focuses on final states with three or four electrons or muons from the possible decays of new heavy leptons via intermediate electroweak bosons. No significant deviations above the Standard Model expectation are observed; upper and lower limits on the heavy lepton production cross-section and masses are derived respectively. These results are then combined for the first time with the ones already published by ATLAS using the channel with two leptons in the final state. The observed lower limit on the mass of the type-III seesaw heavy leptons combining two, three and four lepton channels together is 910 GeV at the 95% confidence level. © 2022, CERN for the benefit of the ATLAS Collaboration.
dc.identifier.citationSearch for type-III seesaw heavy leptons in leptonic final states in pp collisions at √s=13TeV with the ATLAS detector / Aad, G. [et al.] // European Physical Journal C. - 2022. - 82. - № 11. - 10.1140/epjc/s10052-022-10785-0
dc.identifier.doi10.1140/epjc/s10052-022-10785-0
dc.identifier.urihttps://www.doi.org/10.1140/epjc/s10052-022-10785-0
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85141210757&origin=resultslist
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/27648
dc.relation.ispartofEuropean Physical Journal C
dc.titleSearch for type-III seesaw heavy leptons in leptonic final states in pp collisions at √s=13TeV with the ATLAS detector
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue11
oaire.citation.volume82
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