000408810 001__ 408810
000408810 003__ SzGeCERN
000408810 005__ 20180212173128.0
000408810 0248_ $$aoai:cds.cern.ch:408810$$pcerncds:FULLTEXT
000408810 035__ $$a0335744CERCER
000408810 041__ $$aeng
000408810 088__ $$aCERN-ALEPH-97-071
000408810 088__ $$aCERN-ALEPH-PHYSIC-97-062
000408810 100__ $$aMedcalf, T
000408810 245__ $$aSearch for Excited Leptons at 161-172 GeV
000408810 260__ $$c1997
000408810 269__ $$aGeneva$$bCERN$$c19 Aug 1997
000408810 300__ $$a10 p
000408810 520__ $$aA search for the radiative decay of excited leptons, $\ls$ and $\ns$, and for the weak decay of excited electron neutrinos, $\ns_e$, was undertaken using the $21.8\ipb$ of data collected by ALEPH at 161--$172\gev$, No evidence for a signal was found in single or pair production. Excluded mass limits from pair production are close to 85$\gevcc$ for excited charged leptons and 80.5$\gevcc$ for excited neutrinos. Limits on the couplings, $\lambda/m_{\ls}$, of excited leptons were derived from single production. For an excited lepton mass of 150$\gevcc$, these limits are 0.0004, 0.007, 0.01 and $0.015\gev^{-1}$, for $\es$, $\ms$, $\ts$, and $\ns_{\mu,\tau}$ respectively. For $\ns_e$ the limit is below $0.007\gev^{-1}$ for masses up to $150\gevcc$, independently of the branching ratios of the decays
000408810 595__ $$a991123SLAC
000408810 595__ $$aCERN EDS
000408810 595__ $$aSIS ALEPH2003
000408810 65017 $$2SzGeCERN$$aParticle Physics - Experiment
000408810 690C_ $$aCERN
000408810 690C_ $$aCERN Internal Note
000408810 690C_ $$aINTNOTE
000408810 690C_ $$aPRIVALEPH
000408810 693__ $$aCERN LEP$$eALEPH
000408810 694__ $$9CERN$$aPHYSIC (PHYSICs)
000408810 700__ $$aVon Wimmersperg-Töller, J H
000408810 710__ $$5EP
000408810 710__ $$gALEPH Collaboration
000408810 8564_ $$uhttp://documents.cern.ch/cgi-bin/setlink?base=internal&categ=aleph&id=aleph-97-071
000408810 8564_ $$uhttps://cds.cern.ch/record/408810/files/exlep161_172.ps.gz
000408810 8564_ $$uhttps://cds.cern.ch/record/408810/files/exlep161_172.txt
000408810 901__ $$uCERN
000408810 916__ $$sn$$w199947
000408810 960__ $$a40
000408810 961__ $$c20100304$$h2135$$lCER01$$x19991122
000408810 963__ $$aPUBLIC
000408810 962__ $$b319858$$njerusalem970819
000408810 970__ $$a000335744CER
000408810 981__ $$a002402500CER01
000408810 980__ $$aINTNOTEALEPHPRIV
000408810 980__ $$aNOTE
000408810 980__ $$aConferencePaper