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Search for evidence of compositeness at LEP I

Extensive searches for evidence of compositeness of quarks and leptons have been made using the full set of ALEPH data from LEP running at the Z peak. They include searches for radiative and weak decays of excited leptons, and radiative and gluonic decays of excited quarks, produced either singly or...

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Detalles Bibliográficos
Autores principales: Barate, R, Buskulic, Damir, Décamp, D, Ghez, P, Goy, C, Lees, J P, Lucotte, A, Merle, E, Minard, M N, Nief, J Y, Pietrzyk, B, Alemany, R, Boix, G, Casado, M P, Chmeissani, M, Crespo, J M, Delfino, M C, Fernández, E, Fernández-Bosman, M, Garrido, L, Graugès-Pous, E, Juste, A, Martínez, M, Merino, G, Miquel, R, Mir, L M, Park, I C, Pascual, A, Perlas, J A, Riu, I, Sánchez, F, Colaleo, A, Creanza, D, De Palma, M, Gelao, G, Iaselli, Giuseppe, Maggi, G, Maggi, M, Nuzzo, S, Ranieri, A, Raso, G, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Tricomi, A, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Abbaneo, D, Becker, U, Bright-Thomas, P G, Casper, David William, Cattaneo, M, Ciulli, V, Dissertori, G, Drevermann, H, Forty, Roger W, Frank, M, Hagelberg, R, Hansen, J B, Harvey, J, Janot, P, Jost, B, Lehraus, Ivan, Mato, P, Minten, Adolf G, Moneta, L, Pacheco, A, Pusztaszeri, J F, Ranjard, F, Rolandi, Luigi, Rousseau, D, Schlatter, W D, Schmitt, M, Schneider, O, Tejessy, W, Teubert, F, Tomalin, I R, Wachsmuth, H W, Wagner, A, Ajaltouni, Ziad J, Badaud, F, Chazelle, G, Deschamps, O, Falvard, A, Ferdi, C, Gay, P, Guicheney, C, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, J C, Pallin, D, Perret, P, Podlyski, F, Proriol, J, Rosnet, P, Hansen, J D, Hansen, J R, Hansen, P H, Nilsson, B S, Rensch, B, Wäänänen, A, Daskalakis, G, Kyriakis, A, Markou, C, Simopoulou, Errietta, Siotis, I, Vayaki, Anna, Blondel, A, Bonneaud, G R, Brient, J C, Bourdon, P, Rougé, A, Rumpf, M, Valassi, Andrea, Verderi, M, Videau, H L, Focardi, E, Parrini, G, Zachariadou, K, Corden, M, Georgiopoulos, C H, Jaffe, D E, 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, G P, Passalacqua, L, Pepé-Altarelli, M, Curtis, L, Halley, A W, Lynch, J G, Negus, P, O'Shea, V, Raine, C, Scarr, J M, Smith, K, Teixeira-Dias, P, Thompson, A S, Thomson, E, Buchmüller, O L, Dhamotharan, S, Geweniger, C, Graefe, G, Hanke, P, Hansper, G, Hepp, V, Kluge, E E, Putzer, A, Sommer, J, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, David M, Cameron, W, Dornan, Peter J, Girone, M, Goodsir, S M, Martin, E B, Marinelli, N, Moutoussi, A, Nash, J, Sedgbeer, J K, Spagnolo, P, Williams, M D, Ghete, V M, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Betteridge, A P, Bowdery, C K, Buck, P G, Colrain, P, Crawford, G, Finch, A J, Foster, F, Hughes, G, Jones, R W L, Williams, M I, Giehl, I, Greene, A M, Hoffmann, C, Jakobs, K, Kleinknecht, K, Quast, G, Renk, B, Rohne, E, Sander, H G, Van Gemmeren, P, Zeitnitz, C, Aubert, Jean-Jacques, Benchouk, C, Bonissent, A, Bujosa, G, Carr, J, Coyle, P, Etienne, F, Leroy, O, Motsch, F, Payre, P, Talby, M, Sadouki, A, Thulasidas, M, Trabelsi, K, Aleppo, M, Antonelli, M, Ragusa, F, Berlich, R, Blum, Walter, Büscher, V, Dietl, H, Ganis, G, Kroha, H, Lütjens, G, Mannert, C, Männer, W, Moser, H G, Schael, S, Settles, Ronald, Seywerd, H C J, Stenzel, H, Wiedenmann, W, Wolf, G, Boucrot, J, Callot, O, Chen, S, Cordier, A, Davier, M, Duflot, L, Grivaz, J F, Heusse, P, Höcker, A, Jacholkowska, A, Kim, D W, Le Diberder, F R, Lefrançois, J, Lutz, A M, Schune, M H, Tournefier, E, Veillet, J J, Videau, I, Zerwas, D, Azzurri, P, Bagliesi, G, Batignani, G, Bettarini, S, Boccali, T, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, M A, Dell'Orso, R, Fantechi, R, Ferrante, I, Foà, L, Forti, F, Giassi, A, Giorgi, M A, Gregorio, A, Ligabue, F, Lusiani, A, Marrocchesi, P S, Messineo, A, Palla, Fabrizio, Rizzo, G, Sanguinetti, G, Sciabà, A, Tenchini, Roberto, Tonelli, G, Vannini, C, Venturi, A, Verdini, P G, Blair, G A, Bryant, L M, Chambers, J T, Green, M G, Medcalf, T, Perrodo, P, Strong, J A, Von Wimmersperg-Töller, J H, Botterill, David R, Clifft, R W, Edgecock, T R, Haywood, S, Norton, P R, Thompson, J C, Wright, A E, Bloch-Devaux, B, Colas, P, Emery, S, Kozanecki, Witold, Lançon, E, Lemaire, M C, Locci, E, Pérez, P, Rander, J, Renardy, J F, Roussarie, A, Schuller, J P, Schwindling, J, Trabelsi, A, Vallage, B, Black, S N, Dann, J H, Johnson, R P, Kim, H Y, Konstantinidis, N P, Litke, A M, McNeil, M A, Taylor, G, Booth, C N, Brew, C A J, Cartwright, S L, Combley, F, Kelly, M S, Lehto, M H, Reeve, J, Thompson, L F, Affholderbach, K, Böhrer, A, Brandt, S, Cowan, G D, Grupen, Claus, Saraiva, P, Smolik, L, Stephan, F, Apollonio, M, Bosisio, L, Della Marina, R, Giannini, G, Gobbo, B, Musolino, G, Rothberg, J E, Wasserbaech, S R, Armstrong, S R, Charles, E, Elmer, P, Ferguson, D P S, Gao, Y, González, S, Greening, T C, Hayes, O J, Hu, H, Jin, S, McNamara, P A, Nachtman, J M, Nielsen, J, Orejudos, W, Pan, Y B, Saadi, Y, Scott, I J, Walsh, J, Wu Sau Lan, Wu, X, Zobernig, G
Lenguaje:eng
Publicado: 1998
Materias:
Acceso en línea:https://dx.doi.org/10.1007/s100520050229
http://cds.cern.ch/record/346643
Descripción
Sumario:Extensive searches for evidence of compositeness of quarks and leptons have been made using the full set of ALEPH data from LEP running at the Z peak. They include searches for radiative and weak decays of excited leptons, and radiative and gluonic decays of excited quarks, produced either singly or in pairs. Searches have also been made for a scalar partner of the Z boson in all decay modes. No evidence for such states has been found and coupling and branching ratio limits are presented. Limits are also given for the branching ratios for $\Z\to\gluon\gluon\gamma$ and $\Z\to\gamma\gamma\gamma$.