Title
Search for Evidence of the Type-III Seesaw Mechanism in Multilepton Final States in Proton-Proton Collisions at s =13 TeV
Date Issued
01 December 2017
Access level
open access
Resource Type
journal article
Author(s)
Sirunyan A.M.
Tumasyan A.
Adam W.
Ambrogi F.
Asilar E.
Bergauer T.
Brandstetter J.
Brondolin E.
Dragicevic M.
Erö J.
Flechl M.
Friedl M.
Frühwirth R.
Ghete V.M.
Grossmann J.
Hrubec J.
Jeitler M.
König A.
Krammer N.
Krätschmer I.
Liko D.
Madlener T.
Mikulec I.
Pree E.
Rabady D.
Rad N.
Rohringer H.
Schieck J.
Schöfbeck R.
Spanring M.
Spitzbart D.
Waltenberger W.
Wittmann J.
Wulz C.E.
Zarucki M.
Chekhovsky V.
Mossolov V.
Suarez Gonzalez J.
De Wolf E.A.
Di Croce D.
Janssen X.
Lauwers J.
Van Haevermaet H.
Van Mechelen P.
Van Remortel N.
Abu Zeid S.
Blekman F.
D'Hondt J.
De Bruyn I.
De Clercq J.
Deroover K.
Flouris G.
Lontkovskyi D.
Lowette S.
Moortgat S.
Moreels L.
Python Q.
Skovpen K.
Tavernier S.
Van Doninck W.
Van Mulders P.
Van Parijs I.
Brun H.
Clerbaux B.
De Lentdecker G.
Delannoy H.
Fasanella G.
Favart L.
Goldouzian R.
Grebenyuk A.
Karapostoli G.
Lenzi T.
Luetic J.
Maerschalk T.
Marinov A.
Randle-Conde A.
Seva T.
Vander Velde C.
Vanlaer P.
Vannerom D.
Yonamine R.
Zenoni F.
Zhang F.
Cimmino A.
Cornelis T.
Dobur D.
Fagot A.
Gul M.
Khvastunov I.
Poyraz D.
Roskas C.
Salva S.
Tytgat M.
Verbeke W.
Zaganidis N.
Bakhshiansohi H.
Bondu O.
Brochet S.
Bruno G.
Caudron A.
Publisher(s)
American Physical Society
Abstract
A search for a signal consistent with the type-III seesaw mechanism in events with three or more electrons or muons is presented. The data sample consists of proton-proton collisions at s=13 TeV collected by the CMS experiment at the LHC in 2016 and corresponds to an integrated luminosity of 35.9 fb-1. Selection criteria based on the number of leptons and the invariant mass of oppositely charged lepton pairs are used to distinguish the signal from the standard model background. The observations are consistent with the expectations from standard model processes. The results are used to place limits on the production of heavy fermions of the type-III seesaw model as a function of the branching ratio to each lepton flavor. In the scenario of equal branching fractions to each lepton flavor, heavy fermions with masses below 840 GeV are excluded. This is the most sensitive probe to date of the type-III seesaw mechanism.
Volume
119
Issue
22
Language
English
OCDE Knowledge area
Mecánica aplicada
Física de partículas, Campos de la Física
Ingeniería mecánica
Scopus EID
2-s2.0-85037815234
PubMed ID
Source
Physical Review Letters
ISSN of the container
00319007
Sponsor(s)
Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR and RAEP (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI and FEDER (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (USA).
We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWFW and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR and RAEP (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI and FEDER (Spain); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (USA).
National Science Foundation - 1151640
National Science Foundation - 1506130
National Science Foundation - 1506168
National Science Foundation - 1508869
National Science Foundation - 1606321
National Science Foundation - 1607096
Science and Technology Facilities Council - GRIDPP
Science and Technology Facilities Council - PP/E000479/1
Science and Technology Facilities Council - ST/H000925/1
National Science and Technology Development Agency - Thailand
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Directorio de Producción Científica
Scopus