Search for pair production of first-generation scalar leptoquarks at root s=13 TeV
FIVE (Austria) ; FNRS ; FWO (Belgium) ; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) ; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) ; Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) ; FAPERGS ; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) ; MES (Bulgaria) ; MoST ; NSFC (China) ; COLCIENCIAS (Colombia) ; CSF (Croatia) ; SENESCYT (Ecuador) ; MoER ; ERDF (Estonia) ; Academy of Finland ; MEC ; CEA ; CNRS/IN2P3 (France) ; BMBF ; GSRT (Greece) ; NKFIA (Hungary) ; DAE ; DST ; IPM ; SFI (Ireland) ; INFN (Italy) ; NRF (Republic of Korea) ; MES (Latvia) ; MOE and UM (Malaysia) ; BUAP ; CONACYT ; UASLP-FAI (Mexico) ; MSHE ; FCT (Portugal) ; JINR (Dubna) ; RosAtom ; RFBR ; MESTD (Serbia) ; SEIDI; CPAN ; FEDER (Spain) ; MOSTR (Sri Lanka) ; Swiss Funding Agencies (Switzerland) ; TUBITAK ; TAEK ; NSF (USA) ; Marie Curie program ; European Research Council ; Horizon 2020 Grant ; Leventis Foundation ; A. P. Sloan Foundation ; Alexander von Humboldt Foundation ; Belgian Federal Science Policy Office ; Fonds pour la Formation a la Recherche dans l'Industrie et dans l' Agriculture (FRIA-Belgium) ; Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium) ; F. R. S.-FNRS ; Ministry of Education ; Youth and Sports (MEYS) of the Czech Republic ; Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences ; NKFIA Research ; Council of Science and Industrial Research, India ; HOMING PLUS program of the Foundation for Polish Science ; European Union, Regional Development Fund ; Ministry of Science and Higher Education ; National Science Center (Poland) ; National Priorities Research Program by Qatar National Research Fund ; Programa Estatal de Foment de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu ; Programa Severo Ochoa del Principado de Asturias ; Thalis and Aristeia programs ; EU-ESF ; Greek NSRF ; Rachadapisek Sompot Fund for Postdoctoral Fellowship ; Chulalongkom University ; Welch Foundation ; Weston Havens Foundation (USA) ; FWO (Belgium): 30820817 ; Horizon 2020 Grant: 675440 ; NKFIA Research: 123842 ; NKFIA Research: 123959 ; NKFIA Research: 124845 ; NKFIA Research: 124850 ; NKFIA Research: 125105 ; National Science Center (Poland): 2014/14/M/ST2/00428 ; National Science Center (Poland): 2014/13/B/ST2/02543 ; National Science Center (Poland): 2014/15/B/ST2/03998 ; National Science Center (Poland): 2015/19/B/ST2/02861 ; National Science Center (Poland): 2012/07/E/ST2/01406 ; Programa Estatal de Foment de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu: MDM-2015-0509 ; Welch Foundation: C-1845 ; A search for the pair production of first-generation scalar leptoquarks is performed using proton-proton collision data recorded at 13 TeV center-of-mass energy with the CMS detector at the LHC. The data correspond to an integrated luminosity of 35.9 fb(-1). The leptoquarks are assumed to decay promptly to a quark and either an electron or a neutrino, with branching fractions beta and 1 - beta, respectively. The search targets the decay final states comprising two electrons, or one electron and large missing transverse momentum, along with two quarks that are detected as hadronic jets. First-generation scalar leptoquarks with masses below 1435 (1270) GeVare excluded for beta = 1.0(0.5). These are the most stringent limits on the mass of first-generation scalar leptoquarks to date. The data are also interpreted to set exclusion limits in the context of an R-parity violating supersymmetric model, predicting promptly decaying top squarks with a similar dielectron final state.