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

doi:10.1016/0370-2693(95)00093-Z

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

Université Paris-Sud
University of São Paulo
INFN Sezione di Bari
P.R. China3 3 Supported by the National Science Foundation of China
European Organization for Nuclear Research
Université Blaise Pascal
Niels Bohr Institutet
NCSR Demokritos
University of Edinburgh
University of Florence
Florida State University
LNF-INFN
University of Glasgow
Institut für Hochenergiephysik
University of Heidelberg
Imperial College London
University of Innsbruck
Lancaster University
Johannes Gutenberg University
Max-Planck-Institut für Physik
Laboratoire de l'Accélérateur Linéaire
University of Pisa
Royal Holloway University of London
Rutherford Appleton Laboratory
CEA/UVSQ/CNRS
University of California at Santa Cruz
The University of Sheffield
Universität Siegen
University of Trieste
Experimental Elementary Particle Physics
University of Washington
University of Wisconsin-Madison

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

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 d ̃_τ = (+0.15 ± 0.58_stat ± 0.38_sys)10^-17e · cm, obtained with 19628 identified τ⁺τ^- events. This gives an upper limit on the weak dipole form factor of d ̃_τ < 1.5 · 10^-17 e · cm at the 95% confidence level.

Original language	English
Pages (from-to)	371-378
Number of pages	8
Journal	Physics Letters B
Volume	346
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(95)00093-Z
Publication status	Published - 9 Mar 1995

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10.1016/0370-2693(95)00093-Z

Cite this

Buskulic, D., Casper, D., De Bonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J. P., Minard, M. N., Odier, P., Pietrzyk, B., Ariztizabal, F., Chmeissani, M., Crespo, J. M., Efthymiopoulos, I., Fernandez, E., Fernandez-Bosman, M., Gaitan, V., Garrido, L., Martinez, M., ... Zobernig, G. (1995). Search for CP violation in the decay Z → τ⁺τ^- Physics Letters B, 346(3-4), 371-378. https://doi.org/10.1016/0370-2693(95)00093-Z

@article{31d795272fd04518808338a00733336b,

title = "Search for CP violation in the decay Z → τ+τ- ",

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 d{\~ }τ = (+0.15 ± 0.58stat ± 0.38sys)10-17e · cm, obtained with 19628 identified τ+τ- events. This gives an upper limit on the weak dipole form factor of d{\~ }τ < 1.5 · 10-17 e · cm at the 95\% confidence level.",

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

year = "1995",

month = mar,

day = "9",

doi = "10.1016/0370-2693(95)00093-Z",

language = "English",

volume = "346",

pages = "371--378",

journal = "Physics Letters B",

issn = "0370-2693",

number = "3-4",

}

Buskulic, D, Casper, D, De Bonis, I, Decamp, D, Ghez, P, Goy, C, Lees, JP, Minard, MN, Odier, P, Pietrzyk, B, Ariztizabal, F, Chmeissani, M, Crespo, JM, Efthymiopoulos, I, Fernandez, E, Fernandez-Bosman, M, Gaitan, V, Garrido, L, Martinez, M, Orteu, S, Pacheco, A, Padilla, C, Palla, F, Pascual, A, Perlas, JA, Sanchez, F, Teubert, F, Creanza, D, de Palma, M, Farilla, A, Iaselli, G, Maggi, G, Marinelli, N, Natali, S, Nuzzo, S, Ranieri, A, Raso, G, Romano, F, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Bonvicini, G, Comas, P, Coyle, P, Drevermann, H, Engelhardt, A, Forty, RW, Frank, M, Ganis, G, Gay, C, Girone, M, Hagelberg, R, Harvey, J, Jacobsen, R, Jost, B, Knobloch, J, Lehraus, I, Maggi, M, Markou, C, Martin, EB, Mato, P, Meinhard, H, Minten, A, Miquel, R, Palazzi, P, Pater, JR, Perrodo, P, Pusztaszeri, JF, Ranjard, F, Rolandi, L, Schlatter, D, Schmelling, M, Tejessy, W, Tomalin, IR, Veenhof, R, Venturi, A, Wachsmuth, H, Wiedenmann, W, Witzeling, W, Wotschack, J, Ajaltouni, Z, Bardadin-Otwinowska, M, Barres, A, Boyer, C, Falvard, A, Gay, P, Guicheney, C, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, JC, Pallin, D, Perret, P, Podlyski, F, Proriol, J, Rossignol, JM, Saadi, F, Fearnley, T, Hansen, JB, Hansen, JD, Hansen, JR, Hansen, PH, Johnson, SD, Møllerud, R, Nilsson, BS, Kyriakis, A, Simopoulou, E, Siotis, I, Vayaki, A, Zachariadou, K, Blondel, A, Bonneaud, G, Brient, JC, Bourdon, P, Passalacqua, L, Rougé, A, Rumpf, M, Tanaka, R, Valassi, A, Verderi, M, Videau, H, Candlin, DJ, Parsons, MI, Veitch, E, Focardi, E, Parrini, G, Corden, M, Delfino, M, Georgiopoulos, C, Jaffe, DE, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Cerutti, F, Chiarella, V, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, GP, Pepe-Altarelli, M, Salomone, S, Colrain, P, ten Have, I, Knowles, IG, Lynch, JG, Maitland, W, Morton, WT, Raine, C, Reeves, P, Scarr, JM, Smith, K, Smith, MG, Thompson, AS, Thorn, S, Turnbull, RM, Becker, U, Braun, O, Geweniger, C, Graefe, G, Hanke, P, Hepp, V, Kluge, EE, Putzer, A, Rensch, B, Schmidt, M, Sommer, J, Stenzel, H, Tittel, K, Wunsch, M, Beuselinck, R, Binnie, DM, Cameron, W, Cattaneo, M, Colling, DJ, Dornan, PJ, Hassard, JF, Konstantinidis, N, Moneta, L, Moutoussi, A, Nash, J, Payne, DG, San Martin, G, Sedgbeer, JK, Wright, AG, Dissertori, G, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Bowdery, CK, Brodbeck, TJ, Finch, AJ, Foster, F, Hughes, G, Jackson, D, Keemer, NR, Nuttall, M, Patel, A, Sloan, T, Snow, SW, Whelan, EP, Galla, A, Greene, AM, Kleinknecht, K, Raab, J, Renk, B, Sander, HG, Schmidt, H, Walther, SM, Wanke, R, Wolf, B, Bencheikh, AM, Benchouk, C, Bonissent, A, Calvet, D, Carr, J, Diaconu, C, Etienne, F, Nicod, D, Payre, P, Roos, L, Rousseau, D, Talby, M, Abt, I, Adlung, S, Assmann, R, Bauer, C, Blum, W, Brown, D, Cattaneo, P, Dehning, B, Dietl, H, Dydak, F, Halley, AW, Jakobs, K, Kroha, H, Lauber, J, Lütjens, G, Lutz, G, Männer, W, Moser, HG, Richter, R, Schröder, J, Schwarz, AS, Settles, R, Seywerd, H, Stierlin, U, Stiegler, U, Denis, RS, Wolf, G, Alemany, R, Boucrot, J, Callot, O, Cordier, A, Courault, F, Davier, M, Duflot, L, Grivaz, JF, Heusse, P, Jacquet, M, Janot, P, Kim, DW, Le Diberder, F, Lefrançois, J, Lutz, AM, Musolino, G, Nikolic, I, Park, HJ, Park, IC, Schune, MH, Simion, S, Veillet, JJ, Videau, I, Abbaneo, D, Bagliesi, G, Batignani, G, Bettarini, S, Bottigli, U, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, MA, Ciulli, V, Dell'Orso, R, Ferrante, I, Fidecaro, F, Foà, L, Forti, F, Giassi, A, Giorgi, MA, Gregorio, A, Ligabue, F, Lusiani, A, Marrocchesi, PS, Messineo, A, Rizzo, G, Sanguinetti, G, Sciabà, A, Spagnolo, P, Steinberger, J, Tenchini, R, Tonelli, G, Triggiani, G, Vannini, C, Verdini, PG, Walsh, J, Betteridge, AP, Blair, GA, Bryant, LM, Gao, Y, Green, MG, Johnson, DL, Medcalf, T, Mir, LM, Strong, JA, Bertin, V, Botterill, DR, Clifft, RW, Edgecock, TR, Haywood, S, Edwards, M, Maley, P, Norton, PR, Thompson, JC, Bloch-Devaux, B, Colas, P, Duarte, H, Emery, S, Kozanecki, W, Lançon, E, Lemaire, MC, Locci, E, Marx, B, Perez, P, Rander, J, Renardy, JF, Rosowsky, A, Roussarie, A, Schuller, JP, Schwindling, J, Si Mohand, D, Trabelsi, A, Vallage, B, Johnson, RP, Litke, AM, Taylor, G, Wear, J, Beddall, A, Booth, CN, Boswell, C, Cartwright, S, Combley, F, Dawson, I, Koksal, A, Letho, M, Newton, WM, Rankin, C, Thompson, LF, Böhrer, A, Brandt, S, Cowan, G, Feigl, E, Grupen, C, Lutters, G, Minguet-Rodriguez, J, Rivera, F, Saraiva, P, Schäfer, U, Smolik, L, Bosisio, L, Della Marina, R, Giannini, G, Gobbo, B, Pitis, L, Ragusa, F, Kim, H, Rothberg, J, Wasserbaech, S, Armstrong, SR, Bellantoni, L, Conway, JS, Elmer, P, Feng, Z, Ferguson, DPS, Gao, YS, Gonzáles, S, Grahl, J, Harton, JL, Hayes, OJ, Hu, H, McNamara, PA, Nachtman, JM, Orejudos, W, Pan, YB, Saadi, Y, Schmitt, M, Scott, I, Sharma, V, Turk, JD, Walsh, AM, Weber, FV, Wildish, T, Wu, SL, Wu, X, Yamartino, JM, Zheng, M & Zobernig, G 1995, 'Search for CP violation in the decay Z → τ⁺τ^- ', Physics Letters B, vol. 346, no. 3-4, pp. 371-378. https://doi.org/10.1016/0370-2693(95)00093-Z

TY - JOUR

T1 - Search for CP violation in the decay Z → τ+τ-

AU - Buskulic, D.

AU - Casper, D.

AU - De Bonis, I.

AU - Decamp, D.

AU - Ghez, P.

AU - Goy, C.

AU - Lees, J. P.

AU - Minard, M. N.

AU - Odier, P.

AU - Pietrzyk, B.

AU - Ariztizabal, F.

AU - Chmeissani, M.

AU - Crespo, J. M.

AU - Efthymiopoulos, I.

AU - Fernandez, E.

AU - Fernandez-Bosman, M.

AU - Gaitan, V.

AU - Garrido, Ll

AU - Martinez, M.

AU - Orteu, S.

AU - Pacheco, A.

AU - Padilla, C.

AU - Palla, F.

AU - Pascual, A.

AU - Perlas, J. A.

AU - Sanchez, F.

AU - Teubert, F.

AU - Creanza, D.

AU - de Palma, M.

AU - Farilla, A.

AU - Iaselli, G.

AU - Maggi, G.

AU - Marinelli, N.

AU - Natali, S.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Romano, F.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Zito, G.

AU - Huang, X.

AU - Lin, J.

AU - Ouyang, Q.

AU - Wang, T.

AU - Xie, Y.

AU - Xu, R.

AU - Xue, S.

AU - Zhang, J.

AU - Zhang, L.

AU - Zhao, W.

AU - Bonvicini, G.

AU - Comas, P.

AU - Coyle, P.

AU - Drevermann, H.

AU - Engelhardt, A.

AU - Forty, R. W.

AU - Frank, M.

AU - Ganis, G.

AU - Gay, C.

AU - Girone, M.

AU - Hagelberg, R.

AU - Harvey, J.

AU - Jacobsen, R.

AU - Jost, B.

AU - Knobloch, J.

AU - Lehraus, I.

AU - Maggi, M.

AU - Markou, C.

AU - Martin, E. B.

AU - Mato, P.

AU - Meinhard, H.

AU - Minten, A.

AU - Miquel, R.

AU - Palazzi, P.

AU - Pater, J. R.

AU - Perrodo, P.

AU - Pusztaszeri, J. F.

AU - Ranjard, F.

AU - Rolandi, L.

AU - Schlatter, D.

AU - Schmelling, M.

AU - Tejessy, W.

AU - Tomalin, I. R.

AU - Veenhof, R.

AU - Venturi, A.

AU - Wachsmuth, H.

AU - Wiedenmann, W.

AU - Witzeling, W.

AU - Wotschack, J.

AU - Ajaltouni, Z.

AU - Bardadin-Otwinowska, M.

AU - Barres, A.

AU - Boyer, C.

AU - Falvard, A.

AU - Gay, P.

AU - Guicheney, C.

AU - Henrard, P.

AU - Jousset, J.

AU - Michel, B.

AU - Monteil, S.

AU - Montret, J. C.

AU - Pallin, D.

AU - Perret, P.

AU - Podlyski, F.

AU - Proriol, J.

AU - Rossignol, J. M.

AU - Saadi, F.

AU - Fearnley, T.

AU - Hansen, J. B.

AU - Hansen, J. D.

AU - Hansen, J. R.

AU - Hansen, P. H.

AU - Johnson, S. D.

AU - Møllerud, R.

AU - Nilsson, B. S.

AU - Kyriakis, A.

AU - Simopoulou, E.

AU - Siotis, I.

AU - Vayaki, A.

AU - Zachariadou, K.

AU - Blondel, A.

AU - Bonneaud, G.

AU - Brient, J. C.

AU - Bourdon, P.

AU - Passalacqua, L.

AU - Rougé, A.

AU - Rumpf, M.

AU - Tanaka, R.

AU - Valassi, A.

AU - Verderi, M.

AU - Videau, H.

AU - Candlin, D. J.

AU - Parsons, M. I.

AU - Veitch, E.

AU - Focardi, E.

AU - Parrini, G.

AU - Corden, M.

AU - Delfino, M.

AU - Georgiopoulos, C.

AU - Jaffe, D. E.

AU - Antonelli, A.

AU - Bencivenni, G.

AU - Bologna, G.

AU - Bossi, F.

AU - Campana, P.

AU - Capon, G.

AU - Cerutti, F.

AU - Chiarella, V.

AU - Felici, G.

AU - Laurelli, P.

AU - Mannocchi, G.

AU - Murtas, F.

AU - Murtas, G. P.

AU - Pepe-Altarelli, M.

AU - Salomone, S.

AU - Colrain, P.

AU - ten Have, I.

AU - Knowles, I. G.

AU - Lynch, J. G.

AU - Maitland, W.

AU - Morton, W. T.

AU - Raine, C.

AU - Reeves, P.

AU - Scarr, J. M.

AU - Smith, K.

AU - Smith, M. G.

AU - Thompson, A. S.

AU - Thorn, S.

AU - Turnbull, R. M.

AU - Becker, U.

AU - Braun, O.

AU - Geweniger, C.

AU - Graefe, G.

AU - Hanke, P.

AU - Hepp, V.

AU - Kluge, E. E.

AU - Putzer, A.

AU - Rensch, B.

AU - Schmidt, M.

AU - Sommer, J.

AU - Stenzel, H.

AU - Tittel, K.

AU - Wunsch, M.

AU - Beuselinck, R.

AU - Binnie, D. M.

AU - Cameron, W.

AU - Cattaneo, M.

AU - Colling, D. J.

AU - Dornan, P. J.

AU - Hassard, J. F.

AU - Konstantinidis, N.

AU - Moneta, L.

AU - Moutoussi, A.

AU - Nash, J.

AU - Payne, D. G.

AU - San Martin, G.

AU - Sedgbeer, J. K.

AU - Wright, A. G.

AU - Dissertori, G.

AU - Girtler, P.

AU - Kneringer, E.

AU - Kuhn, D.

AU - Rudolph, G.

AU - Bowdery, C. K.

AU - Brodbeck, T. J.

AU - Finch, A. J.

AU - Foster, F.

AU - Hughes, G.

AU - Jackson, D.

AU - Keemer, N. R.

AU - Nuttall, M.

AU - Patel, A.

AU - Sloan, T.

AU - Snow, S. W.

AU - Whelan, E. P.

AU - Galla, A.

AU - Greene, A. M.

AU - Kleinknecht, K.

AU - Raab, J.

AU - Renk, B.

AU - Sander, H. G.

AU - Schmidt, H.

AU - Walther, S. M.

AU - Wanke, R.

AU - Wolf, B.

AU - Bencheikh, A. M.

AU - Benchouk, C.

AU - Bonissent, A.

AU - Calvet, D.

AU - Carr, J.

AU - Diaconu, C.

AU - Etienne, F.

AU - Nicod, D.

AU - Payre, P.

AU - Roos, L.

AU - Rousseau, D.

AU - Talby, M.

AU - Abt, I.

AU - Adlung, S.

AU - Assmann, R.

AU - Bauer, C.

AU - Blum, W.

AU - Brown, D.

AU - Cattaneo, P.

AU - Dehning, B.

AU - Dietl, H.

AU - Dydak, F.

AU - Halley, A. W.

AU - Jakobs, K.

AU - Kroha, H.

AU - Lauber, J.

AU - Lütjens, G.

AU - Lutz, G.

AU - Männer, W.

AU - Moser, H. G.

AU - Richter, R.

AU - Schröder, J.

AU - Schwarz, A. S.

AU - Settles, R.

AU - Seywerd, H.

AU - Stierlin, U.

AU - Stiegler, U.

AU - Denis, R. St

AU - Wolf, G.

AU - Alemany, R.

AU - Boucrot, J.

AU - Callot, O.

AU - Cordier, A.

AU - Courault, F.

AU - Davier, M.

AU - Duflot, L.

AU - Grivaz, J. F.

AU - Heusse, Ph

AU - Jacquet, M.

AU - Janot, P.

AU - Kim, D. W.

AU - Le Diberder, F.

AU - Lefrançois, J.

AU - Lutz, A. M.

AU - Musolino, G.

AU - Nikolic, I.

AU - Park, H. J.

AU - Park, I. C.

AU - Schune, M. H.

AU - Simion, S.

AU - Veillet, J. J.

AU - Videau, I.

AU - Abbaneo, D.

AU - Bagliesi, G.

AU - Batignani, G.

AU - Bettarini, S.

AU - Bottigli, U.

AU - Bozzi, C.

AU - Calderini, G.

AU - Carpinelli, M.

AU - Ciocci, M. A.

AU - Ciulli, V.

AU - Dell'Orso, R.

AU - Ferrante, I.

AU - Fidecaro, F.

AU - Foà, L.

AU - Forti, F.

AU - Giassi, A.

AU - Giorgi, M. A.

AU - Gregorio, A.

AU - Ligabue, F.

AU - Lusiani, A.

AU - Marrocchesi, P. S.

AU - Messineo, A.

AU - Rizzo, G.

AU - Sanguinetti, G.

AU - Sciabà, A.

AU - Spagnolo, P.

AU - Steinberger, J.

AU - Tenchini, R.

AU - Tonelli, G.

AU - Triggiani, G.

AU - Vannini, C.

AU - Verdini, P. G.

AU - Walsh, J.

AU - Betteridge, A. P.

AU - Blair, G. A.

AU - Bryant, L. M.

AU - Gao, Y.

AU - Green, M. G.

AU - Johnson, D. L.

AU - Medcalf, T.

AU - Mir, Ll M.

AU - Strong, J. A.

AU - Bertin, V.

AU - Botterill, D. R.

AU - Clifft, R. W.

AU - Edgecock, T. R.

AU - Haywood, S.

AU - Edwards, M.

AU - Maley, P.

AU - Norton, P. R.

AU - Thompson, J. C.

AU - Bloch-Devaux, B.

AU - Colas, P.

AU - Duarte, H.

AU - Emery, S.

AU - Kozanecki, W.

AU - Lançon, E.

AU - Lemaire, M. C.

AU - Locci, E.

AU - Marx, B.

AU - Perez, P.

AU - Rander, J.

AU - Renardy, J. F.

AU - Rosowsky, A.

AU - Roussarie, A.

AU - Schuller, J. P.

AU - Schwindling, J.

AU - Si Mohand, D.

AU - Trabelsi, A.

AU - Vallage, B.

AU - Johnson, R. P.

AU - Litke, A. M.

AU - Taylor, G.

AU - Wear, J.

AU - Beddall, A.

AU - Booth, C. N.

AU - Boswell, C.

AU - Cartwright, S.

AU - Combley, F.

AU - Dawson, I.

AU - Koksal, A.

AU - Letho, M.

AU - Newton, W. M.

AU - Rankin, C.

AU - Thompson, L. F.

AU - Böhrer, A.

AU - Brandt, S.

AU - Cowan, G.

AU - Feigl, E.

AU - Grupen, C.

AU - Lutters, G.

AU - Minguet-Rodriguez, J.

AU - Rivera, F.

AU - Saraiva, P.

AU - Schäfer, U.

AU - Smolik, L.

AU - Bosisio, L.

AU - Della Marina, R.

AU - Giannini, G.

AU - Gobbo, B.

AU - Pitis, L.

AU - Ragusa, F.

AU - Kim, H.

AU - Rothberg, J.

AU - Wasserbaech, S.

AU - Armstrong, S. R.

AU - Bellantoni, L.

AU - Conway, J. S.

AU - Elmer, P.

AU - Feng, Z.

AU - Ferguson, D. P.S.

AU - Gao, Y. S.

AU - Gonzáles, S.

AU - Grahl, J.

AU - Harton, J. L.

AU - Hayes, O. J.

AU - Hu, H.

AU - McNamara, P. A.

AU - Nachtman, J. M.

AU - Orejudos, W.

AU - Pan, Y. B.

AU - Saadi, Y.

AU - Schmitt, M.

AU - Scott, I.

AU - Sharma, V.

AU - Turk, J. D.

AU - Walsh, A. M.

AU - Weber, F. V.

AU - Wildish, T.

AU - Wu, Sau Lan

AU - Wu, X.

AU - Yamartino, J. M.

AU - Zheng, M.

AU - Zobernig, G.

PY - 1995/3/9

Y1 - 1995/3/9

N2 - 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 d ̃τ = (+0.15 ± 0.58stat ± 0.38sys)10-17e · cm, obtained with 19628 identified τ+τ- events. This gives an upper limit on the weak dipole form factor of d ̃τ < 1.5 · 10-17 e · cm at the 95% confidence level.

AB - 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 d ̃τ = (+0.15 ± 0.58stat ± 0.38sys)10-17e · cm, obtained with 19628 identified τ+τ- events. This gives an upper limit on the weak dipole form factor of d ̃τ < 1.5 · 10-17 e · cm at the 95% confidence level.

U2 - 10.1016/0370-2693(95)00093-Z

DO - 10.1016/0370-2693(95)00093-Z

M3 - Article

AN - SCOPUS:5244319730

SN - 0370-2693

VL - 346

SP - 371

EP - 378

JO - Physics Letters B

JF - Physics Letters B

IS - 3-4

ER -

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

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Search for CP violation in the decay Z → τ⁺τ^-