Search for excited charged leptons inZ 0 decays
P. Abreu,W. Adam,F Adami, T. Adye,T. Akesson,G. D. Alekseev,P. Allen, S. Almehed,F. Alted,S. J. Alvsvaag,U. Amaldi,E. Anassontzis,P. Antilogus,W.-D. Apel, B. �sman,P. Astier,J.-E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao,G. Barbiellini,D. Y. Bardin, A. Baroncelli,O. Barring,W. Bartl,M. J. Bates,M. Baubillier, K.-H. Becks,C. J. Beeston,M. Begalli,P. Beilliere,Yu. Belokopytov,P. Beltran,D. Benedic,J. M. Benlloch,M. Berggren,D. Bertrand,S. Biagi,F. Bianchi,J. H. Bibby,M. S. Bilenky,P. Billoir,J. Bjarne,D. Bloch, S. Blyth,P. N. Bogolubov,T. Bolognese,M. Bonapart,M. Bonesini,W. Bonivento,P. S. L. Booth,M. Boratav,P. Borgeaud, G. Borisov,H. Borner,C. Bosio,O. Botner,B. Bouquet,M. Bozzo,S. Braibant,P. Branchini,K. D. Brand, R. A. Brenner,C. Bricman,R. C. A. Brown,N. Brummer, J.-M. Brunet, L. Bugge, T. Buran,H. Burmeister,J. A. M. A. Buytaert,M. Caccia, M. Calvi,A. J. Camacho Rozas, J.-E. Campagne,A. Campion, T. Camporesi, V. Canale,F. Cao,L. Carroll,C. Caso,E. Castelli,M. V. Castillo Gimenez, A. Cattai, F. R. Cavallo, L. Cerrito, P. Charpentier,P. Checchia, G. A. Chelkov,L. Chevalier,P. Chliapnikov,V. Chorowicz,R. Cirio,M. P. Collins, J. L. Contreras,R. Contri,G. Cosme, F. Couchot,H. B. Crawley,D. Crennell, G. Crosetti,N. Crosland,M. Crozon,J. Cuevas Maestro, S. Czellar,S. Dagoret,E. Dahl-Jensen,B. Dalmagne,M. Dam,G. Damgaard,G. Darbo, E. Daubie, P. D. Dauncey,M. Davenport,P. David,A. Angelis,M. Beer,H. Boeck, W. Boer,C. Clercq,M. D. M. Fez Laso,N. Groot,C. Vaissiere,B. Lotto,A. Min,C. Defoix,D. Delikaris,S. Delorme, P. Delpierre,N. Demaria,J. Derkaoui,L. Ciaccio,H. Dijkstra, F. Djama,J. Dolbeau,M. Donszelmann, K. Doroba,M. Dracos, J. Drees, M. Dris,Y. Dufour,W. Dulinski,R. Dzhelyadin,L.-O. Eek,P. A.-M. Eerola, T. Ekelof, G. Ekspong,A. Elliot Peisert, J. P. Engel,V. Falaleev, D. Fassouliotis,M. Fernandez Alonso, A. Ferrer,T. A. Filippas,A. Firestone,H. Foeth,E. Fokitis,P. Folegati, F. Fontanelli,H. Forsbach,B. Franek,P. Frenkiel,D. C. Fries,A. G. 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Keranen,J. Kesteman,B. A. Khomenko,N. N. Khovanski,B. King,N. J. Kjaer,H. Klein,W. Klempt,A. Klovning, P. Kluit,J. H. Koehne,B. Koene,P. Kokkinias,M. Kopf,M. Koratzinos, K. Korcyl,A. V. Korytov,B. Korzen,V. Kostukhin, C. Kourkoumelis,T. Kreuzberger,J. Krolikowski,U. Kruener-Marquis,W. Krupinski,W. Kucewicz,K. Kurvinen,C. Lacasta,C. Lambropoulos,J. W. Lamsa,L. Lanceri,V. Lapin,J.-P. Laugier,R. Lauhakangas,G. Leder,F. Ledroit,J. Lemonne, G. Lenzen,V. Lepeltier,A. Letessier-Selvon, D. Liko,E. Lieb,E. Lillethun,J. Lindgren,A. Lipniacka,I. Lippi,R. Llosa,B. Loerstad,M. Lokajicek, J. G. Loken,M. A. Lopez Aguera,A. Lopez-Fernandez,M. Los, D. Loukas, A. Lounis,J. J. Lozano,R. Lucock,P. Lutz, L. Lyons,G. Maehlum,J. Maillard,A. Maltezos, S. Maltezos,F. Mandl, J. Marco, M. Margoni,J.-C. Marin, A. Markou,S. Marti,L. Mathis,F. Matorras,C. Matteuzzi,G. Matthiae, M. Mazzucato,M. Mc Cubbin,R. Mc Kay,R. Mc Nulty,E. Menichetti, C. Meroni,W. T. Meyer,M. Michelotto,W. A. Mitaroff,G. V. Mitselmakher,U. 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Simonetti, F. Simonetto,A. N. Sissakian,T. B. Skaali,G. Skjevling,G. Smadja,G. R. Smith, N. Smirnov, R. Sosnowski,T. S. Spassoff, E. Spiriti, S. Squarcia,H. Staeck, C. Stanescu, G. Stavropoulos,F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub,C. J. Stubenrauch, M. Szczekowski,M. Szeptycka,P. Szymanski,T. Tabarelli, S. Tavernier,G. E. Theodosiou,A. Tilquin,J. Timmermans,V. G. Timofeev,L. G. Tkatchev, T. Todorov,D. Z. Toet,L. Tortora,M. T. Trainor, D. Treille,U. Trevisan, W. Trischuk,G. Tristram,C. Troncon, A. Tsirou,E. N. Tsyganov, M. Turala,R. Turchetta,M.-L. Turluer, T. Tuuva,I. A. Tyapkin, M. Tyndel,S. Tzamarias,B. Ueberschaer,S. Ueberschaer,O. Ullaland,V. A. Uvarov, G. Valenti,E. Vallazza,J. A. Valls Ferrer,G. W. Apeldoorn,P. Dam,W. K. Doninck,N. Eijndhoven,C. Velde,J. Varela,P. Vaz, G. Vegni,J. Velasco,L. Ventura,W. Venus,F. Verbeure,L. S. Vertogradov,L. Vibert, D. Vilanova,E. V. Vlasov,A. S. Vodopyanov,M. Vollmer,S. Volponi,G. Voulgaris, M. Voutilainen, V. Vrba, H. Wahlen,C. Walck, F. Waldner, M. Wayne,P. Weilhammer,J. Werner, A. M. Wetherell, J. H. Wickens,J. Wikne,G. R. Wilkinson,W. S. C. Williams,M. Winter,D. Wormald,G. Wormser,K. Woschnagg,N. Yamdagni,P. Yepes,A. Zaitsev,A. Zalewska,P. Zalewski,E. Zevgolatakos,G. Zhang,N. I. Zimin,M. Zito, R. Zitoun,R. Zukanovich Funchal, G. Zumerle,J. Zuniga
European Physical Journal C（1992）
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摘要
Using a data sample of 115000 hadronic Z0 decays, a search was performed for the production of excited charged leptons decaying into an ordinary lepton and one photon. Pair production of excited leptons of mass below 45 GeV/c2 is excluded. From an analysis of the lepton-photon mass spectra this experiment is also able to exclude single production of these particles for masses that reach up to 85 GeV/c2, if the compositeness scale is below 1 TeV.
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关键词
mass spectra,particle physics
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