A study of τ decays involving η and ω mesons

D. Buskulic*, I. De Bonis, D. Decamp, P. Chez, C. Goy, J. P. Lees, J. P. Lucotte, M. N. Minard, J. Y. Nief, P. Odier, B. Pietrzyk, M. P. Casado, M. Chmeissani, J. M. Crespo, J. M. Delfino, I. Efthymiopoulos, E. Fernandez, M. Fernandez-Bosman, Ll Garrido, A. JusteM. Martinez, S. Orteu, C. Padilla, I. C. Park, A. Pascual, J. A. Perlas, I. Riu, F. Sanchez, F. Teubert, A. Colaleo, D. Creanza, M. Depalma, G. Gelao, M. Girone, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, R. Alemany, A. O. Bazarko, G. Bonvicini, P. Bright-Thomas, M. Cattaneo, P. Comas, P. Coyle, H. Drevermann, R. W. Forty, M. Frank, R. Hagelberg, J. Harvey, P. Janot, B. Jost, E. Kneringer, J. Knobloch, I. Lehraus, G. Lutters, E. B. Martin, P. Mato, A. Minten, R. Miquel, Ll M. Mir, L. Moneta, T. Oest, A. Pacheco, J. F. Pusztaszeri, F. Ranjard, P. Rensing, G. Rizzo, L. Rolandi, D. Schlatter, M. Schmelling, M. Schmitt, O. Schneider, W. Tejessy, I. R. Tomalin, A. Venturi, H. Wachsmuth, A. Wagner, Z. Ajaltouni, A. Barrés, 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, P. Rosnet, J. M. Rossignol, T. Fearnley, J. B. Hansen, J. D. Hansen, J. R. Hansen, P. H. Hansen, B. S. Nilsson, B. Rensch, A. Wäänänen, A. Kyriakis, C. Markou, E. Simopoulou, I. Siotis, A. Vayaki, K. Zachariadou, A. Blondel, G. Bonneaud, J. C. Brient, P. Bourdon, A. Rougé, M. Rumpf, A. Valassi, M. Verderi, H. Videau, D. J. Candlin, M. I. Parsons, E. Focardi, G. Parrini, M. Corden, C. Georgiopoulos, D. E. Jaffe, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, D. Casper, V. Chiarella, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G. P. Murtas, L. Passalacqua, M. Pepe-Altarelli, L. Curtis, S. J. Dorris, A. W. Halley, I. G. Knowles, J. G. Lynch, V. O'Shea, C. Raine, P. Reeves, J. M. Scarr, K. Smith, P. Teixeira-Dias, A. S. Thompson, F. Thompson, S. Thorn, R. M. Turnbull, U. Becker, C. Geweniger, G. Graefe, P. Hanke, G. Hansper, V. Hepp, E. E. Kluge, A. Putzer, M. Schmidt, J. Sommer, H. Stenzel, K. Tittel, S. Werner, M. Wunsch, D. Abbaneo, R. Beuselinck, D. M. Binnie, W. Cameron, P. J. Dornan, A. Moutoussi, J. Nash, J. K. Sedgbeer, A. M. Stacey, M. D. Williams, G. Dissertori, P. Girtler, D. Kuhn, G. Rudolph, A. P. Betteridge, C. K. Bowdery, P. Colrain, G. Crawford, A. J. Finch, F. Foster, G. Hughes, T. Sloan, M. I. Williams, A. Galla, I. Giehl, A. M. Greene, C. Hoffmann, K. Jakobs, K. Kleinknecht, G. Quast, B. Renk, E. Rohne, H. G. Sander, P. Van Gemmeren, C. Zeitnitz, J. J. Aubert, A. M. Bencheikh, C. Benchouk, A. Bonissent, G. Bujosa, D. Calvet, J. Carr, C. Diaconu, F. Etienne, N. Konstantinidis, P. Payre, D. Rousseau, M. Talby, A. Sadouki, M. Thulasidas, K. Trabelsi, M. Aleppo, F. Ragusa, C. Bauer, R. Berlich, W. Blum, V. Büscher, H. Dietl, F. Dydak, G. Ganis, C. Gotzhein, H. Kroha, G. Lütjens, G. Lutz, W. Männer, H. G. Moser, R. Richter, A. Rosado-Schlosser, S. Schael, R. Settles, H. Seywerd, R. St Denis, H. Stenzel, W. Wiedenmamm, G. Wolf, J. Boucrot, O. Callot, Y. Choi, A. Cordier, M. Davier, L. Duflot, J. F. Grivaz, Ph Heusse, A. Höcker, A. Jacholkowska, M. Jacquet, D. W. Kim, F. Le Diberder, J. Lefrançois, A. M. Lutz, I. Nikolic, H. J. Park, M. H. Schune, S. Simion, J. J. Veillet, I. Videau, D. Zerwas, P. Azzurri, G. Bagliesi, G. Batignani, S. Bettarini, C. Bozzi, G. Calderini, M. Carpinelli, M. A. Ciocci, V. Ciulli, R. Dell'Orso, R. Fantechi, I. Ferrante, L. Foà, F. Forti, A. Giassi, M. A. Giorgi, A. Gregorio, F. Ligabue, A. Lusiani, P. S. Marrocchesi, A. Messineo, F. Palla, G. Sanguinetti, A. Sciabà, P. Spagnolo, J. Steinberger, R. Tenchini, G. Tonelli, C. Vannini, P. G. Verdini, J. Walsh, G. A. Blair, L. M. Bryant, F. Cerutti, J. T. Chambers, Y. Gao, M. G. Green, T. Medcalf, P. Perrodo, J. A. Strong, J. H. Von Wimmersperg-Toeller, D. R. Botterill, R. W. Clifft, T. R. Edgecock, S. Haywood, P. Maley, P. R. Norton, J. C. Thompson, A. E. Wright, B. Bloch-Devaux, P. Colas, S. Emery, W. Kozanecki, E. Lançon, M. C. Lemaire, E. Locci, B. Marx, P. Perez, J. Rander, J. F. Renardy, A. Roussarie, J. P. Schuller, J. Schwindling, A. Trabelsi, B. Vallage, S. N. Black, J. H. Dann, R. P. Johnson, H. Y. Kim, A. M. Litke, M. A. McNeil, G. Taylor, C. N. Booth, R. Boswell, C. A J Brew, S. Cartwright, F. Combley, A. Koksal, M. Letho, W. M. Newton, J. Reeve, L. F. Thompson, A. Bohrer, S. Brandt, G. Cowan, C. Grupen, J. Minguet-Rodriguez, F. Rivera, P. Saraiva, L. Smolik, F. Stephan, M. Appolonio, L. Bosisio, R. Della Marina, G. Giannini, B. Gobbo, G. Musolino, J. Rothberg, S. Wasserbaech, S. R. Armstrong, P. Elmer, Z. Feng, D. P S Ferguson, Y. S. Gao, S. González, J. Grahl, T. C. Greening, O. J. Hayes, H. Hu, P. A. McNamara, J. M. Nachtman, W. Orejudos, Y. B. Pan, Y. Saadi, I. J. Scott, A. M. Walsh, Sau Lan Wu, X. Wu, J. M. Yamartino, M. Zheng, G. Zobernig

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

Abstract

The 132 pb-1 of data collected by ALEPH from 1991 to 1994 have been used to analyze η and ω production in τ decays. The following branching fractions have been measured: B(τ- → ντωh-) = (1.91 ± 0.07 ± 0.06) × 10-2, B(τ- → ντωh-π0) = (4.3 ± 0.6 ± 0.5) × 10-3, B(τ- → ντηK-) = (2.9-1.2+1.3 ± 0.7) × 10-4, B(τ- → ντηh-π0) = (1.8 ± 0.4 ± 0.2) × 10-3 and the 95% C.L. limit B(τ- → ντηπ-) < 6.2 × 10-4 has been obtained. The ωπ- and ηπ-π0 rates and dynamics are found in agreement with the predictions made from e+e- annihilation data with the help of isospin invariance (CVC).

Original languageEnglish (US)
Pages (from-to)263-273
Number of pages11
JournalZeitschrift fur Physik C-Particles and Fields
Volume74
Issue number2
DOIs
StatePublished - Apr 1997

Funding

1 Now at CERN, CH-1211 Geneva 23, Switzerland. 2 Supported by Dirección General de Investigación Científica y Técnica, Spain. 3 Also at Dipartimento di Fisica, INFN, Sezione di Catania, Catania, Italy. 4 Also Istituto di Fisica Generale, Università di Torino, Torino, Italy. 5 Also Istituto di Cosmo-Geofisica del C.N.R., Torino, Italy. 6 Supported by the Commission of the European Communities, contract ERBCHBICT941234. 7 Supported by CICYT, Spain. 8 Supported by the National Science Foundation of China. 9 Supported by the Danish Natural Science Research Council. 10 Supported by the UK Particle Physics and Astronomy Research Council. 11 Supported by the US Department of Energy, grant DE-FG0295-ER40896. 12 Now at Dragon Systems, Newton, MA 02160, USA. 13 Supported by the US Department of Energy, contract DE-FG05-92ER40742. 14 Supported by the US Department of Energy, contract DE-FC05-85ER250000. 15 Permanent address: Universitat de Barcelona, 08208 Barcelona, Spain. 16 Supported by the Bundesministerium für Forschung und Technologie, Germany. 17 Supported by the Direction des Sciences de la Matière, C.E.A. 18 Supported by Fonds zur Förderung der wissenschaftlichen Forschung, Austria. 19 Permanent address: Kangnung National University, Kangnung, Korea. 20 Now at DESY, Hamburg, Germany. 21 Also at CERN, CH-1211 Geneva 23, Switzerland. 22 Supported by the US Department of Energy, grant DE-FG03-92ER40689. 23 Now at Wayne State University, Detroit, MI 48202, USA. 24 Now at Max-Plank-Institüt für Kernphysik, Heidelberg, Germany. 25 Also at Istituto di Matematica e Fisica, Università di Sassari, Sassari, Italy. 26 Permanent address: Sung Kyun Kwon University, Suwon, Korea. 27 Now at The Johns Hopkins University, Baltimore, MD 21218, USA. 28 Now at Harvard University, Cambridge, MA 02138, USA. 29 Now at Rutgers University, Piscataway, NJ 08855-0849, USA.

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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