Publication:
Search for physics beyond the standard model in multilepton final states in proton-proton collisions at √s = 13 TeV

Простая страница элемента
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorMatveev, V.
dc.contributor.authorBychkova, O.
dc.contributor.authorChistov, R.
dc.contributor.authorDanilov, M.
dc.contributor.authorPolikarpov, S.
dc.contributor.authorTarkovskii, E.
dc.contributor.authorМатвеев, Виктор Анатольевич
dc.contributor.authorЧистов, Руслан Николаевич
dc.contributor.authorДанилов, Михаил Владимирович
dc.contributor.authorПоликарпов, Сергей Михайлович
dc.date.accessioned2024-11-25T17:12:08Z
dc.date.available2024-11-25T17:12:08Z
dc.date.issued2020
dc.description.abstract© 2020, The Author(s).A search for physics beyond the standard model in events with at least three charged leptons (electrons or muons) is presented. The data sample corresponds to an integrated luminosity of 137 fb−1 of proton-proton collisions at s = 13 TeV, collected with the CMS detector at the LHC in 2016–2018. The two targeted signal processes are pair production of type-III seesaw heavy fermions and production of a light scalar or pseudoscalar boson in association with a pair of top quarks. The heavy fermions may be manifested as an excess of events with large values of leptonic transverse momenta or missing transverse momentum. The light scalars or pseudoscalars may create a localized excess in the dilepton mass spectra. The results exclude heavy fermions of the type-III seesaw model for masses below 880 GeV at 95% confidence level in the scenario of equal branching fractions to each lepton flavor. This is the most restrictive limit on the flavor-democratic scenario of the type-III seesaw model to date. Assuming a Yukawa coupling of unit strength to top quarks, branching fractions of new scalar (pseudoscalar) bosons to dielectrons or dimuons above 0.004 (0.03) and 0.04 (0.03) are excluded at 95% confidence level for masses in the range 15–75 and 108–340 GeV, respectively. These are the first limits in these channels on an extension of the standard model with scalar or pseudoscalar particles. [Figure not available: see fulltext.]
dc.identifier.citationSearch for physics beyond the standard model in multilepton final states in proton-proton collisions at √s = 13 TeV / Sirunyan, A.M. [et al.] // Journal of High Energy Physics. - 2020. - 2020. - № 3. - 10.1007/JHEP03(2020)051
dc.identifier.doi10.1007/JHEP03(2020)051
dc.identifier.urihttps://www.doi.org/10.1007/JHEP03(2020)051
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85081750873&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000519956400001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/20433
dc.relation.ispartofJournal of High Energy Physics
dc.titleSearch for physics beyond the standard model in multilepton final states in proton-proton collisions at √s = 13 TeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue3
oaire.citation.volume2020
relation.isAuthorOfPublicationef548252-18ef-404e-af89-6a34bcb1e902
relation.isAuthorOfPublication33fc3165-5409-4818-afca-7755baea5ae8
relation.isAuthorOfPublicationea15a545-9f37-48a7-b655-6d4f976eb636
relation.isAuthorOfPublicatione0db33f8-0f1a-4621-89aa-b2fbd84a4c94
relation.isAuthorOfPublication.latestForDiscoveryef548252-18ef-404e-af89-6a34bcb1e902
relation.isOrgUnitOfPublicationba0b4738-e6bd-4285-bda5-16ab2240dbd1
relation.isOrgUnitOfPublication.latestForDiscoveryba0b4738-e6bd-4285-bda5-16ab2240dbd1
relation.isProjectOfPublication3b98e09a-644d-4cc9-b64d-e187cac4328e
relation.isProjectOfPublication.latestForDiscovery3b98e09a-644d-4cc9-b64d-e187cac4328e
Файлы
Коллекции
Публикации