Data collected by ALEPH in the years 1990, 1991 and 1992 have been used to update a previous search for CP violation in the decay of the Z into τ+τ−. The measurement of the weak dipole form factor of the τ lepton has been performed by studying correlations between the τ leptons. No signal of CP violation was found. The weak dipole form factor is found to be View the MathML source · cm, obtained with 19628 identified τ+τ− events. This gives an upper limit on the weak dipole form factor of View the MathML source · cm at the 95% confidence level.

Search for CP violation in the decay Z → τ+τ− / D. Buskulic;D. Casper;I. De Bonis;D. Decamp;P. Ghez;C. Goy;J.-P. Lees;M.-N. Minard;P. Odier;B. Pietrzyk;F. Ariztizabal;M. Chmeissani;J.M. Crespo;I. Efthymiopoulos;E. Fernandez;M. Fernandez-Bosman;V. Gaitan;Ll. Garrido;M. Martinez;S. Orteu;A. Pacheco;C. Padilla;F. Palla;A. Pascual;J.A. Perlas;F. Sanchez;F. Teubert;D. Creanza;M. de Palma;A. Farilla;G. Iaselli;G. Maggi;N. Marinelli;S. Natali;S. Nuzzo;A. Ranieri;G. Raso;F. Romano;F. Ruggieri;G. Selvaggi;L. Silvestris;P. Tempesta;G. Zito;X. Huang;J. Lin;Q. Ouyang;T. Wang;Y. Xie;R. Xu;S. Xue;J. Zhang;L. Zhang;W. Zhao;G. Bonvicini;P. Comas;P. Coyle;H. Drevermann;A. Engelhardt;R.W. Forty;M. Frank;G. Ganis;C. Gay;M. Girone;R. Hagelberg;J. Harvey;R. Jacobsen;B. Jost;J. Knobloch;I. Lehraus;M. Maggi;C. Markou;E.B. Martin;P. Mato;H. Meinhard;A. Minten;R. Miquel;P. Palazzi;J.R. Pater;P. Perrodo;J.-F. Pusztaszeri;F. Ranjard;L. Rolandi;D. Schlatter;M. Schmelling;W. Tejessy;I.R. Tomalin;R. Veenhof;A. Venturi;H. Wachsmuth;W. Wiedenmann;W. Witzeling;J. Wotschack;Z. Ajaltouni;M. Bardadin-Otwinowska;A. Barres;C. Boyer;A. Falvard;P. Gay;C. Guicheney;P. Henrard;J. Jousset;B. Michel;S. Monteil;J-C. Montret;D. Pallin;P. Perret;F. Podlyski;J. Proriol;J.-M. Rossignol;F. Saadi;T. Fearnley;J.B. Hansen;J.D. Hansen;J.R. Hansen;P.H. Hansen;S.D. Johnson;R. Møllerud;B.S. Nilsson;A. Kyriakis;E. Simopoulou;I. Siotis;A. Vayaki;K. Zachariadou;A. Blondel;G. Bonneaud;J.C. Brient;P. Bourdon;L. Passalacqua;A. Rougé;M. Rumpf;R. Tanaka;A. Valassi;M. Verderi;H. Videau;D.J. Candlin;M.I. Parsons;E. Veitch;E. Focardi;G. Parrini;M. Corden;M. Delfino;C. Georgiopoulos;D.E. Jaffe;A. Antonelli;G. Bencivenni;G. Bologna;F. Bossi;P. Campana;G. Capon;F. Cerutti;V. Chiarella;G. Felici;P. Laurelli;G. Mannocchi;F. Murtas;G.P. Murtas;M. Pepe-Altarelli;S. Salomone;P. Colrain;I. ten Have;I.G. Knowles;J.G. Lynch;W. Maitland;W.T. Morton;C. Raine;P. Reeves;J.M. Scarr;K. Smith;M.G. Smith;A.S. Thompson;S. Thorn;R.M. Turnbull;U. Becker;O. Braun;C. Geweniger;G. Graefe;P. Hanke;V. Hepp;E.E. Kluge;A. Putzer;B. Rensch;M. Schmidt;J. Sommer;H. Stenzel;K. Tittel;M. Wunsch;R. Beuselinck;D.M. Binnie;W. Cameron;M. Cattaneo;D.J. Colling;P.J. Dornan;J.F. Hassard;N. Konstantinidis;L. Moneta;A. Moutoussi;J. Nash;D.G. Payne;G. San Martin;J.K. Sedgbeer;A.G. Wright;G. Dissertori;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;C.K. Bowdery;T.J. Brodbeck;A.J. Finch;F. Foster;G. Hughes;D. Jackson;N.R. Keemer;M. Nuttall;A. Patel;T. Sloan;S.W. Snow;E.P. Whelan;A. Galla;A.M. Greene;K. Kleinknecht;J. Raab;B. Renk;H.-G. Sander;H. Schmidt;S.M. Walther;R. Wanke;B. Wolf;A.M. Bencheikh;C. Benchouk;A. Bonissent;D. Calvet;J. Carr;C. Diaconu;F. Etienne;D. Nicod;P. Payre;L. Roos;D. Rousseau;M. Talby;I. Abt;S. Adlung;R. Assmann;C. Bauer;W. Blum;D. Brown;P. Cattaneo;B. Dehning;H. Dietl;F. Dydak;A.W. Halley;K. Jakobs;H. Kroha;J. Lauber;G. Lütjens;G. Lutz;W. Männer;H.-G. Moser;R. Richter;J. Schröder;A.S. Schwarz;R. Settles;H. Seywerd;U. Stierlin;U. Stiegler;R.St. Denis;G. Wolf;R. Alemany;J. Boucrot;O. Callot;A. Cordier;F. Courault;M. Davier;L. Duflot;J.-F. Grivaz;Ph. Heusse;M. Jacquet;P. Janot;D.W. Kim;F. Le Diberder;J. Lefrançois;A.-M. Lutz;G. Musolino;I. Nikolic;H.J. Park;I.C. Park;M.-H. Schune;S. Simion;J.-J. Veillet;I. Videau;D. Abbaneo;G. Bagliesi;G. Batignani;S. Bettarini;U. Bottigli;C. Bozzi;G. Calderini;M. Carpinelli;M.A. Ciocci;V. Ciulli;R. Dell'Orso;I. Ferrante;F. Fidecaro;L. Foà;F. Forti;A. Giassi;M.A. Giorgi;A. Gregorio;F. Ligabue;A. Lusiani;P.S. Marrocchesi;A. Messineo;G. Rizzo;G. Sanguinetti;A. Sciabà;P. Spagnolo;J. Steinberger;R. Tenchini;G. Tonelli;G. Triggiani;C. Vannini;P.G. Verdini;J. Walsh;A.P. Betteridge;G.A. Blair;L.M. Bryant;Y. Gao;M.G. Green;D.L. Johnson;T. Medcalf;Ll.M. Mir;J.A. Strong;V. Bertin;D.R. Botterill;R.W. Clifft;T.R. Edgecock;S. Haywood;M. Edwards;P. Maley;P.R. Norton;J.C. Thompson;B. Bloch-Devaux;P. Colas;H. Duarte;S. Emery;W. Kozanecki;E. Lançon;M.C. Lemaire;E. Locci;B. Marx;P. Perez;J. Rander;J.-F. Renardy;A. Rosowsky;A. Roussarie;J.-P. Schuller;J. Schwindling;D. Si Mohand;A. Trabelsi;B. Vallage;R.P. Johnson;A.M. Litke;G. Taylor;J. Wear;A. Beddall;C.N. Booth;C. Boswell;S. Cartwright;F. Combley;I. Dawson;A. Koksal;M. Letho;W.M. Newton;C. Rankin;L.F. Thompson;A. Böhrer;S. Brandt;G. Cowan;E. Feigl;C. Grupen;G. Lutters;J. Minguet-Rodriguez;F. Rivera;P. Saraiva;U. Schäfer;L. Smolik;L. Bosisio;R. Della Marina;G. Giannini;B. Gobbo;L. Pitis;F. Ragusa;H. Kim;J. Rothberg;S. Wasserbaech;S.R. Armstrong;L. Bellantoni;J.S. Conway;P. Elmer;Z. Feng;D.P.S. Ferguson;Y.S. Gao;S. Gonzáles;J. Grahl;J.L. Harton;O.J. Hayes;H. Hu;P.A. McNamara;J.M. Nachtman;W. Orejudos;Y.B. Pan;Y. Saadi;M. Schmitt;I. Scott;V. Sharma;J.D. Turk;A.M. Walsh;F.V. Weber;T. Wildish;Sau Lan Wu;X. Wu;J.M. Yamartino;M. Zheng;G. Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 346:(1995), pp. 371-378. [10.1016/0370-2693(95)00093-Z]

Search for CP violation in the decay Z → τ+τ−

FOCARDI, ETTORE;CIULLI, VITALIANO;
1995

Abstract

Data collected by ALEPH in the years 1990, 1991 and 1992 have been used to update a previous search for CP violation in the decay of the Z into τ+τ−. The measurement of the weak dipole form factor of the τ lepton has been performed by studying correlations between the τ leptons. No signal of CP violation was found. The weak dipole form factor is found to be View the MathML source · cm, obtained with 19628 identified τ+τ− events. This gives an upper limit on the weak dipole form factor of View the MathML source · cm at the 95% confidence level.
1995
346
371
378
D. Buskulic;D. Casper;I. De Bonis;D. Decamp;P. Ghez;C. Goy;J.-P. Lees;M.-N. Minard;P. Odier;B. Pietrzyk;F. Ariztizabal;M. Chmeissani;J.M. ...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/638349
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