A direct search for new charged heavy leptons at LEP

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ID: 270311
1990
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Abstract
Results are presented from a search for a new charged heavy lepton in e+e− annihilation. The data were taken with the OPAL detector at LEP during a scan of the Z0 resonance. Two independent search techniques were used, one looking for events with large missing energy and missing momentum transverse to the beam, and the other for events with isolated energetic leptons. Two candidate events, consistent with expected background, were found in the first search; none was found in the second. These results allow the exclusion at the 95% confidence level of a charged heavy lepton of mass less than 44.3 GeV/c2 if it is assumed to have a massless neutrino partner. Limits are also presented for the case of a massive neutrino.
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Authors M.Z. Akrawy,G. Alexander,J. Allison,P.P. Allport,K.J. Anderson,J.C. Armitage,G.T.J. Arnison,P. Ashton,G. Azuelos,J.T.M. Baines,A.H. Ball,J. Banks,G.J. Barker,R.J. Barlow,J.R. Batley,G. Bavaria,F. Beck,K.W. Bell,G. Bella,S. Bethke,O. Biebel,I.J. Bloddworth,P. Bock,H. Breuker,R.M. Brown,R. Brun,A. Buijs,H.J. Burckhart,P. Capiluppi,R.K. Carnegie,A.A. Carter,J.R. Carter,C.Y. Chang,D.G. Charlton,J.T.M. Chrin,I. Cohen,J.E. Conboy,M. Couch,M. Coupland,M. Cuffiani,S. Dado,G.M. Dallavalle,O.W. Davies,M.M. DeNinno,A. Dieckmann,M. Dittmar,M.S. Dixit,D. Duchesneau,E. Duchovni,I.P. Duerdoth,D. Dumas,H. El Mamouni,P.A. Elcombe,P.G. Estabrooks,E. Etzion,F. Fabbri,P. Farthouat,H.M. Fischer,D.G. Fong,M.T. French,C. Fukunaga,B. Gandois,O. Ganel,J.W. Gary,N.I. Geddes,C.N.P. Gee,C. Geich-Gimbel,S.W. Gensler,F.X. Gentit,G. Giacomelli,W.R. Gibson,J.D. Gillies,J. Goldberg,M.J. Goodrick,W. Gorn,D. Granite,E. Gross,P. Grosse-Wiesmann,J. Grunhaus,H. Hagedorn,J. Hagemann,M. Hansroul,C.K. Hargrove,J. Hart,P.M. Hattersley,D. Hatzifotiadou,M. Hauschild,C.M. Hawkes,E. Heflin,J. Heintze,R.J. Hemingway,R.D. Heuer,J.C. Hill,S.J. Hillier,P.S. Hinde,C. Ho,J.D. Hobbs,P.R. Hobson,D. Hochman,B. Holl,R.J. Homer,S.R. Hou,C.P. Howarth,R.E. Hughes-Jones,P. Igo-Kemenes,M. Imori,D.C. Imrie,A. Jawahery,P.W. Jeffreys,H. Jeremie,M. Jimack,E. Jin,M. Jobes,P. Jovanovic,Dean Karlen,K. Kawagoe,T. Kawamoto,R.G. Kellogg,B.W. Kennedy,C. Kleinwort,D.E. Klem,G. Knop,T. Kobayashi,L. Köpke,T.P. Kokott,M. Koshiba,Robert Kowalewski,H. Kreutzmann,J. Von Krogh,J. Kroll,P. Kyberd,G.D. Lafferty,F. Lamarche,W.J. Larson,M.M.B. Lasota,J.G. Layter,P. Le Du,P. Leblanc,D. Lellouch,P. Lennert,L. Lessard,L. Levinson,S.L. Lloyd,F.K. Loebinger,J.M. Lorah,B. Lorazo,M.J. Losty,J. Ludwig,J. Ma,A.A. Macbeth,M. Mannelli,S. Marcellini,G. Maringer,J.P. Martin,T. Mashimo,P. Mättig,U. Maur,T.J. McMahon,A.C. McPherson,F. Meijers,D. Menszner,F.S. Merritt,H. Mes,A. Michellini,R.P. Middleton,G. Mikenberg,D.J. Miller,C. Milstene,M. Minowa,W. Mohr,A. Montanari,T. Mori,M.W. Moss,A. Muller,P.G. Murphy,W.J. Murray,B. Nellen,H.H. Nguyen,M. Nozaki,A.J.P. O'dowd,S.W. O'neale,B. O'neill,F.G. Oakham,F. Odorici,M. Ogg,H. Oh,M.J. Oreglia,S. Orito,G.N. Patrick,S.J. Pawley,J.E. Pilcher,J.L. Pinfold,D.E. Plane,B. Poli,A. Possoz,A. Pouladdej,T.W. Pritchard,G. Quast,J. Raab,M.W. Redmond,D.L. Rees,M. Regimbald,K. Riles,C.M. Roach,F. Roehner,A. Rollnik,J.M. Roney,A.M. Rossi,P. Routenburg,K. Runge,O. Runolfsson,S. Sanghera,R.A. Sansum,M. Sasaki,B.J. Saunders,A.D. Schaile,O. Schaile,W. Schappert,P. Scharff-Hansen,H. Von Der Schmitt,S. Schreiber,J. Schwarz,A. Shapira,B.C. Shen,P. Sherwood,A. Simon,G.P. Siroli,A. Skuja,A.M. Smith,T.J. Smith,G.A. Snow,E.J. Spreadbury,R.W. Springer,M. Sproston,K. Stephens,J. Steuerer,H.E. Stier,R. Ströhmer,D. Strom,H. Takeda,T. Takeshita,T. Tsukamoto,M.F. Turner,G. Tysarczyk,D. Van Den Plas,G.J. VanDalen,C.J. Virtue,A. Wagner,C. Wahl,H. Wang,C.P. Ward,D.R. Ward,J. Waterhouse,P.M. Watkins,A.T. Watson,N.K. Watson,M. Weber,S. Weisz,N. Wermes,M. Weymann,G.W. Wilson,J.A. Wilson,I. Wingerter,V-H. Winterer,N.C. Wood,S. Wotton,B. Wuensch,T.R. Wyatt,R. Yaari,H. Yamashita,Y. Yang,G. Yekutieli,W. Zeuner,G.T. Zorn,S. Zylberajch,R.W.L. Jones;M.Z. Akrawy;G. Alexander;J. Allison;P.P. Allport;K.J. Anderson;J.C. Armitage;G.T.J. Arnison;P. Ashton;G. Azuelos;J.T.M. Baines;A.H. Ball;J. Banks;G.J. Barker;R.J. Barlow;J.R. Batley;G. Bavaria;F. Beck;K.W. Bell;G. Bella;S. Bethke;O. Biebel;I.J. Bloddworth;P. Bock;H. Breuker;R.M. Brown;R. Brun;A. Buijs;H.J. Burckhart;P. Capiluppi;R.K. Carnegie;A.A. Carter;J.R. Carter;C.Y. Chang;D.G. Charlton;J.T.M. Chrin;I. Cohen;J.E. Conboy;M. Couch;M. Coupland;M. Cuffiani;S. Dado;G.M. Dallavalle;O.W. Davies;M.M. DeNinno;A. Dieckmann;M. Dittmar;M.S. Dixit;D. Duchesneau;E. Duchovni;I.P. Duerdoth;D. Dumas;H. El Mamouni;P.A. Elcombe;P.G. Estabrooks;E. Etzion;F. Fabbri;P. Farthouat;H.M. Fischer;D.G. Fong;M.T. French;C. Fukunaga;B. Gandois;O. Ganel;J.W. Gary;N.I. Geddes;C.N.P. Gee;C. Geich-Gimbel;S.W. Gensler;F.X. Gentit;G. Giacomelli;W.R. Gibson;J.D. Gillies;J. Goldberg;M.J. Goodrick;W. Gorn;D. Granite;E. Gross;P. Grosse-Wiesmann;J. Grunhaus;H. Hagedorn;J. Hagemann;M. Hansroul;C.K. Hargrove;J. Hart;P.M. Hattersley;D. Hatzifotiadou;M. Hauschild;C.M. Hawkes;E. Heflin;J. Heintze;R.J. Hemingway;R.D. Heuer;J.C. Hill;S.J. Hillier;P.S. Hinde;C. Ho;J.D. Hobbs;P.R. Hobson;D. Hochman;B. Holl;R.J. Homer;S.R. Hou;C.P. Howarth;R.E. Hughes-Jones;P. Igo-Kemenes;M. Imori;D.C. Imrie;A. Jawahery;P.W. Jeffreys;H. Jeremie;M. Jimack;E. Jin;M. Jobes;P. Jovanovic;Dean Karlen;K. Kawagoe;T. Kawamoto;R.G. Kellogg;B.W. Kennedy;C. Kleinwort;D.E. Klem;G. Knop;T. Kobayashi;L. Köpke;T.P. Kokott;M. Koshiba;Robert Kowalewski;H. Kreutzmann;J. Von Krogh;J. Kroll;P. Kyberd;G.D. Lafferty;F. Lamarche;W.J. Larson;M.M.B. Lasota;J.G. Layter;P. Le Du;P. Leblanc;D. Lellouch;P. Lennert;L. Lessard;L. Levinson;S.L. Lloyd;F.K. Loebinger;J.M. Lorah;B. Lorazo;M.J. Losty;J. Ludwig;J. Ma;A.A. Macbeth;M. Mannelli;S. Marcellini;G. Maringer;J.P. Martin;T. Mashimo;P. Mättig;U. Maur;T.J. McMahon;A.C. McPherson;F. Meijers;D. Menszner;F.S. Merritt;H. Mes;A. Michellini;R.P. Middleton;G. Mikenberg;D.J. Miller;C. Milstene;M. Minowa;W. Mohr;A. Montanari;T. Mori;M.W. Moss;A. Muller;P.G. Murphy;W.J. Murray;B. Nellen;H.H. Nguyen;M. Nozaki;A.J.P. O'dowd;S.W. O'neale;B. O'neill;F.G. Oakham;F. Odorici;M. Ogg;H. Oh;M.J. Oreglia;S. Orito;G.N. Patrick;S.J. Pawley;J.E. Pilcher;J.L. Pinfold;D.E. Plane;B. Poli;A. Possoz;A. Pouladdej;T.W. Pritchard;G. Quast;J. Raab;M.W. Redmond;D.L. Rees;M. Regimbald;K. Riles;C.M. Roach;F. Roehner;A. Rollnik;J.M. Roney;A.M. Rossi;P. Routenburg;K. Runge;O. Runolfsson;S. Sanghera;R.A. Sansum;M. Sasaki;B.J. Saunders;A.D. Schaile;O. Schaile;W. Schappert;P. Scharff-Hansen;H. Von Der Schmitt;S. Schreiber;J. Schwarz;A. Shapira;B.C. Shen;P. Sherwood;A. Simon;G.P. Siroli;A. Skuja;A.M. Smith;T.J. Smith;G.A. Snow;E.J. Spreadbury;R.W. Springer;M. Sproston;K. Stephens;J. Steuerer;H.E. Stier;R. Ströhmer;D. Strom;H. Takeda;T. Takeshita;T. Tsukamoto;M.F. Turner;G. Tysarczyk;D. Van Den Plas;G.J. VanDalen;C.J. Virtue;A. Wagner;C. Wahl;H. Wang;C.P. Ward;D.R. Ward;J. Waterhouse;P.M. Watkins;A.T. Watson;N.K. Watson;M. Weber;S. Weisz;N. Wermes;M. Weymann;G.W. Wilson;J.A. Wilson;I. Wingerter;V-H. Winterer;N.C. Wood;S. Wotton;B. Wuensch;T.R. Wyatt;R. Yaari;H. Yamashita;Y. Yang;G. Yekutieli;W. Zeuner;G.T. Zorn;S. Zylberajch;R.W.L. Jones;
Journal physics letters b
Year 1990
DOI
10.1016/0370-2693(90)90443-a
URL
https://sciprofiles.com/publication/view/81865e7d0bfd3030e52f12fa63716580
Keywords
neutrino charged heavy lepton missing energy new charged

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