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Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs

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Constraints are presented on the total width of the recently discovered Higgs boson, ΓH, using its relative on-shell and off-shell production and decay rates to a pair of Z bosons, where one Z boson decays to an electron or muon pair, and the other to an electron, muon, or neutrino pair. The analysis is based on the data collected by the CMS experiment at the LHC in 2011 and 2012, corresponding to integrated luminosities of 5.1fb -1 at a center-of-mass energy s=7TeV and 19.7fb -1 at s=8TeV. A simultaneous maximum likelihood fit to the measured kinematic distributions near the resonance peak and above the Z-boson pair production threshold leads to an upper limit on the Higgs boson width of ΓH < 22MeV at a 95% confidence level, which is 5.4 times the expected value in the standard model at the measured mass of mH = 125.6GeV. © 2014 Elsevier B.V.

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CMSDibosonHiggsPhysicsProperties
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AlanDeğerDil
dc.contributor.authorKhachatryan, V.
dc.contributor.authorSirunyan, A.M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorErö, J.
dc.contributor.authorFabjan, C.
dc.contributor.authorFriedl, M.
dc.contributor.authorFrühwirth, R.
dc.contributor.authorGhete, V.M.
dc.contributor.authorHartl, C.
dc.contributor.authorHörmann, N.
dc.contributor.authorHrubec, J.
dc.contributor.authorJeitler, M.
dc.contributor.authorKiesenhofer, W.
dc.contributor.authorKnünz, V.
dc.contributor.authorKrammer, M.
dc.contributor.authorKrätschmer, I.
dc.contributor.authorLiko, D.
dc.contributor.authorMikulec, I.
dc.contributor.authorRabady, D.
dc.contributor.authorRahbaran, B.
dc.contributor.authorRohringer, H.
dc.contributor.authorSchöfbeck, R.
dc.contributor.authorStrauss, J.
dc.contributor.authorTaurok, A.
dc.contributor.authorTreberer-Treberspurg, W.
dc.contributor.authorWaltenberger, W.
dc.contributor.authorWulz, C.-E.
dc.contributor.authorMossolov, V.
dc.contributor.authorShumeiko, N.
dc.contributor.authorSuarez Gonzalez, J.
dc.contributor.authorAlderweireldt, S.
dc.contributor.authorBansal, M.
dc.contributor.authorBansal, S.
dc.contributor.authorCornelis, T.
dc.contributor.authorDe Wolf, E.A.
dc.contributor.authorJanssen, X.
dc.contributor.authorKnutsson, A.
dc.contributor.authorLuyckx, S.
dc.contributor.authorOchesanu, S.
dc.contributor.authorRoland, B.
dc.contributor.authorRougny, R.
dc.contributor.authorVan De Klundert, M.
dc.contributor.authorVan Haevermaet, H.
dc.contributor.authorVan Mechelen, P.
dc.contributor.authorVan Remortel, N.
dc.contributor.authorVan Spilbeeck, A.
dc.contributor.authorBlekman, F.
dc.date.accessioned2026-10-18T20:30:05.092207659Z
dc.date.available2026-10-18T20:30:05.092207659Z
dc.date.issued2014
dc.description.abstractConstraints are presented on the total width of the recently discovered Higgs boson, ΓH, using its relative on-shell and off-shell production and decay rates to a pair of Z bosons, where one Z boson decays to an electron or muon pair, and the other to an electron, muon, or neutrino pair. The analysis is based on the data collected by the CMS experiment at the LHC in 2011 and 2012, corresponding to integrated luminosities of 5.1fb -1 at a center-of-mass energy s=7TeV and 19.7fb -1 at s=8TeV. A simultaneous maximum likelihood fit to the measured kinematic distributions near the resonance peak and above the Z-boson pair production threshold leads to an upper limit on the Higgs boson width of ΓH < 22MeV at a 95% confidence level, which is 5.4 times the expected value in the standard model at the measured mass of mH = 125.6GeV. © 2014 Elsevier B.V.
dc.description.sponsorshipWe 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: BMWF 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); MoER , SF0690030s09 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); NRF and WCU (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); CINVESTAV , CONACYT , SEP , and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON , RosAtom , RAS and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEPCenter , IPST , STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (USA).
dc.identifier.doi10.1016/j.physletb.2014.06.077
dc.identifier.endpage85
dc.identifier.issn0370-2693
dc.identifier.scopus2-s2.0-84904577780
dc.identifier.startpage64
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/15274
dc.identifier.volume736
dc.language.isoen
dc.publisherElsevier B.V.
dc.relation.ispartofPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectCMS
dc.subjectDiboson
dc.subjectHiggs
dc.subjectPhysics
dc.subjectProperties
dc.titleConstraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus143
rdl.oa.statusgold
rdl.source.indexSCOPUS