Erzincan Binali Yıldırım ÜniversitesiErzincan Binali Yıldırım ÜniversitesiAçık Erişim Arşivi · RDL Open

Search for excited leptons in pp collisions at s=7 TeV

ArticleAçık Erişim

Özet

Results are presented of a search for compositeness in electrons and muons using a data sample of pp collisions at a center-of-mass energy s=7 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 5.0 fb−1. Excited leptons (ℓ⁎) are assumed to be produced via contact interactions in conjunction with a standard model lepton and to decay via ℓ⁎→ℓγ, yielding a final state with two energetic leptons and a photon. The number of events observed in data is consistent with that expected from the standard model. The 95% confidence upper limits for the cross section for the production and decay of excited electrons (muons), with masses ranging from 0.6 to 2 TeV, are 1.48 to 1.24 fb (1.31 to 1.11 fb). Excited leptons with masses below 1.9 TeV are excluded for the case where the contact interaction scale equals the excited lepton mass. The limits on the cross sections are the most stringent ones published to date. © 2013 CERN

Anahtar Kelimeler

CMSPhysics
RDL Kalıcı Bağlantı (PID)
https://rdlopen.rawdatalibrary.net/r/ebyu/15816Resmi atıflarda kullanılan kalıcı adres
Tam Kayıt
AlanDeğerDil
dc.contributor.authorChatrchyan, S.
dc.contributor.authorKhachatryan, V.
dc.contributor.authorSirunyan, A.M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAguilo, E.
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.authorHammer, J.
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.authorPernicka, M.
dc.contributor.authorRahbaran, B.
dc.contributor.authorRohringer, C.
dc.contributor.authorRohringer, H.
dc.contributor.authorSchöfbeck, R.
dc.contributor.authorStrauss, J.
dc.contributor.authorTaurok, A.
dc.contributor.authorWaltenberger, W.
dc.contributor.authorWalzel, G.
dc.contributor.authorWidl, E.
dc.contributor.authorWulz, C.-E.
dc.contributor.authorMossolov, V.
dc.contributor.authorShumeiko, N.
dc.contributor.authorSuarez Gonzalez, J.
dc.contributor.authorBansal, M.
dc.contributor.authorBansal, S.
dc.contributor.authorCornelis, T.
dc.contributor.authorDe Wolf, E.A.
dc.contributor.authorJanssen, X.
dc.contributor.authorLuyckx, S.
dc.contributor.authorMucibello, L.
dc.contributor.authorOchesanu, S.
dc.contributor.authorRoland, B.
dc.contributor.authorRougny, R.
dc.contributor.authorSelvaggi, M.
dc.contributor.authorStaykova, Z.
dc.contributor.authorVan Haevermaet, H.
dc.date.accessioned2026-10-18T20:30:40.075134717Z
dc.date.available2026-10-18T20:30:40.075134717Z
dc.date.issued2013
dc.description.abstractResults are presented of a search for compositeness in electrons and muons using a data sample of pp collisions at a center-of-mass energy s=7 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 5.0 fb−1. Excited leptons (ℓ⁎) are assumed to be produced via contact interactions in conjunction with a standard model lepton and to decay via ℓ⁎→ℓγ, yielding a final state with two energetic leptons and a photon. The number of events observed in data is consistent with that expected from the standard model. The 95% confidence upper limits for the cross section for the production and decay of excited electrons (muons), with masses ranging from 0.6 to 2 TeV, are 1.48 to 1.24 fb (1.31 to 1.11 fb). Excited leptons with masses below 1.9 TeV are excluded for the case where the contact interaction scale equals the excited lepton mass. The limits on the cross sections are the most stringent ones published to date. © 2013 CERN
dc.description.sponsorshipWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq , CAPES , FAPERJ , and FAPESP (Brazil); MES (Bulgaria); CERN ; CAS , MoST , and NSFC (China); COLCIENCIAS (Colombia); MSES (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 NKTH (Hungary); DAE and DST (India); I± (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Republic of Korea); LAS (Lithuania); CINVESTAV , CONACYT , SEP , and UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MON , RosAtom , RAS and RFBR (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie programme and the European Research Council (European Union); the Leventis Foundation ; the A.P. Sloan Foundation ; the Alexander von Humboldt Foundation ; the Belgian Federal Science Policy Office ; the Fonds pour la Formation à la Recherche dans lʼIndustrie et dans lʼAgriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Council of Scientific and Industrial Research , India; and the HOMING PLUS programme of Foundation for Polish Science , cofinanced from European Union, Regional Development Fund .
dc.identifier.doi10.1016/j.physletb.2013.02.031
dc.identifier.endpage329
dc.identifier.issn0370-2693
dc.identifier.issue4-5
dc.identifier.scopus2-s2.0-85035810716
dc.identifier.startpage309
dc.identifier.urihttps://rdlopen.rawdatalibrary.net/r/ebyu/15816
dc.identifier.volume720
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.subjectPhysics
dc.titleSearch for excited leptons in pp collisions at s=7 TeV
dc.typeArticle
dspace.entity.typePublication
rdl.citation.scopus20
rdl.oa.statusgold
rdl.source.indexSCOPUS