The properties of the Z resonance are measured on the basis of 190 000 Z decays into fermion pairs collected with the ALEPH detector at LEP. Assuming lepton universality, Mz=(91.182±0.009exp±0.020L:P ) GeV, G{cyrillic}Z=(2484±17) MeV, σhad 0=(41.44±0.36) nb, and G{cyrillic}jad/G{cyrillic}ℓℓ=21.00± 0.20. The corresponding number of light neutrino species is 2.97±0.07. The forward-back-ward asymmetry in leptonic decays is used to determine the ratio of vector to axial-vector coupling constants of leptons:gv 2(MZ 2)/gA 2(MZ 2)=0.0072±0.0027. Combining these results with ALEPH results on quark charge and {Mathematical expression} asymmetries, and τ polarization, sin2θW(MZ 2). In the contex of the Minimal Standard Model, limits are placed on the top-quark mass.

Decamp, D., Deschizeaux, B., Goy, C., Lees, J., Minard, M., Alemany, R., et al. (1992). Improved measurements of electroweak parameters from Z decays into fermion pairs. ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS, 53(1), 1-20 [10.1007/BF01483868].

Improved measurements of electroweak parameters from Z decays into fermion pairs

CARPINELLI, Massimo;
1992

Abstract

The properties of the Z resonance are measured on the basis of 190 000 Z decays into fermion pairs collected with the ALEPH detector at LEP. Assuming lepton universality, Mz=(91.182±0.009exp±0.020L:P ) GeV, G{cyrillic}Z=(2484±17) MeV, σhad 0=(41.44±0.36) nb, and G{cyrillic}jad/G{cyrillic}ℓℓ=21.00± 0.20. The corresponding number of light neutrino species is 2.97±0.07. The forward-back-ward asymmetry in leptonic decays is used to determine the ratio of vector to axial-vector coupling constants of leptons:gv 2(MZ 2)/gA 2(MZ 2)=0.0072±0.0027. Combining these results with ALEPH results on quark charge and {Mathematical expression} asymmetries, and τ polarization, sin2θW(MZ 2). In the contex of the Minimal Standard Model, limits are placed on the top-quark mass.
Articolo in rivista - Articolo scientifico
ALEPH detector
English
1
20
20
Decamp, D., Deschizeaux, B., Goy, C., Lees, J., Minard, M., Alemany, R., et al. (1992). Improved measurements of electroweak parameters from Z decays into fermion pairs. ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS, 53(1), 1-20 [10.1007/BF01483868].
Decamp, D; Deschizeaux, B; Goy, C; Lees, J; Minard, M; Alemany, R; Crespo, J; Delfino, M; Fernandez, E; Gaitan, V; Garrido, L; Mir, L; Pacheco, A; Catanesi, M; Creanza, D; Depalma, M; Farilla, A; Iaselli, G; Maggi, G; Maggi, M; Natali, S; Nuzzo, S; Quattromini, M; Ranieri, A; Raso, G; Romano, F; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Zito, G; Gao, Y; Hu, H; Huang, D; Huang, X; Lin, J; Lou, J; Qiao, C; Ruan, T; Wang, T; Xie, Y; Xu, D; Xu, R; Zhang, J; Zhao, W; Atwood, W; Bauerdick, L; Bird, F; Blucher, E; Bonvicini, G; Bossi, F; Boudreau, J; Brown, D; Burnett, T; Drevermann, H; Forty, R; Grab, C; Hagelberg, R; Haywood, S; Hilgart, J; Jost, B; Kasemann, M; Knobloch, J; Lacourt, A; Lancon, E; Lehraus, I; Lohse, T; Lusiani, A; Marchioro, A; Martinez, M; Mato, P; Menary, S; Minten, A; Miotto, A; Miquel, R; Moser, H; Nash, J; Palazzi, P; Ranjard, F; Redlinger, G; Roth, A; Rothberg, J; Rotscheidt, H; Saich, M; Denis, R; Schlatter, D; Takashima, M; Talby, M; Tejessy, W; Wachsmuth, H; Wasserbaech, S; Wheeler, S; Wiedenmann, W; Witzeling, W; Wotschack, J; Ajaltouni, Z; Bardadinotwinowska, M; Elfellous, R; Falvard, A; Gay, P; Harvey, J; Henrard, P; Jousset, J; Michel, B; Montret, J; Pallin, D; Perret, P; Proriol, J; Prulhiere, F; Stimpfl, G; Hansen, J; Hansen, J; Hansen, P; Mollerud, R; Nilsson, B; Efthymiopoulos, I; Simopoulou, E; Vayaki, A; Badier, J; Blondel, A; Bonneaud, G; Bourotte, J; Braems, F; Brient, J; Fouque, G; Gamess, A; Guirlet, R; Orteu, S; Rosowsky, A; Rouge, A; Rumpf, M; Tanaka, R; Videau, H; Candlin, D; Veitch, E; Parrini, G; Corden, M; Georgiopoulos, C; Ikeda, M; Lannutti, J; Levinthal, D; Mermikides, M; Sawyer, L; Antonelli, A; Baldini, R; Bencivenni, G; Bologna, G; Campana, P; Capon, G; Cerutti, F; Chiarella, V; Dettorrepiazzoli, B; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, G; Nicoletti, G; Passalacqua, L; Pepealtarelli, M; Picchi, P; Zografou, P; Altoon, B; Boyle, O; Halley, A; Tenhave, I; Hearns, J; Lynch, J; Morton, W; Raine, C; Scarr, J; Smith, K; Thompson, A; Turnbull, R; Brandl, B; Braun, O; Geiges, R; Geweniger, C; Hanke, P; Hepp, V; Kluge, E; Maumary, Y; Putzer, A; Rensch, B; Stahl, A; Tittel, K; Wunsch, M; Belk, A; Beuselinck, R; Binnie, D; Cameron, W; Cattaneo, M; Dornan, P; Dugeay, S; Greene, A; Hassard, J; Lieske, N; Patton, S; Payne, D; Phillips, M; Sedgbeer, J; Taylor, G; Tomalin, I; Wright, A; Girtler, P; Kuhn, D; Rudolph, G; Bowdery, C; Brodbeck, T; Finch, A; Foster, F; Hughes, G; Keemer, N; Nuttall, M; Patel, A; Rowlingson, B; Sloan, T; Snow, S; Whelan, E; Barczewski, T; Kleinknecht, K; Raab, J; Renk, B; Roehn, S; Sander, H; Schmelling, M; Schmidt, H; Steeg, F; Walther, S; Wolf, B; Albanese, J; Aubert, J; Benchouk, C; Bernard, V; Bonissent, A; Courvoisier, D; Etienne, F; Papalexiou, S; Payre, P; Pietrzyk, B; Qian, Z; Becker, H; Blum, W; Cattaneo, P; Cowan, G; Dehning, B; Dietl, H; Dydak, F; Fernandezbosman, M; Hanslkozanecka, T; Jahn, A; Kozanecki, W; Lange, E; Lauber, J; Lutjens, G; Lutz, G; Manner, W; Pan, Y; Richter, R; Schroder, J; Schwarz, A; Settles, R; Stierlin, U; Thomas, J; Wolf, G; Bertin, V; Boucrot, J; Callot, O; Chen, X; Cordier, A; Davier, M; Ganis, G; Grivaz, J; Heusse, P; Janot, P; Kim, D; Lediberder, F; Lefrancois, J; Lutz, A; Veillet, J; Videau, I; Zhang, Z; Zomer, F; Abbaneo, D; Amendolia, S; Bagliesi, G; Batignani, G; Bosisio, L; Bottigli, U; Bradaschia, C; Carpinelli, M; Ciocci, M; Dellorso, R; Ferrante, I; Fidecaro, F; Foa, L; Focardi, E; Forti, F; Gatto, C; Giassi, A; Giorgi, M; Ligabue, F; Mannelli, E; Marrocchesi, P; Messineo, A; Moneta, L; Palla, F; Sanguinetti, G; Steinberger, J; Tenchini, R; Tonelli, G; Triggiani, G; Vannini, C; Venturi, A; Verdini, P; Walsh, J; Carter, J; Green, M; March, P; Medcalf, T; Quazi, I; Strong, J; Thomas, R; West, L; Wildish, T; Botterill, D; Clifft, R; Edgecock, T; Edwards, M; Fisher, S; Jones, T; Norton, P; Salmon, D; Thompson, J; Blochdevaux, B; Colas, P; Klopfenstein, C; Locci, E; Loucatos, S; Monnier, E; Perez, P; Perlas, J; Perrier, F; Rander, J; Renardy, J; Roussarie, A; Schuller, J; Schwindling, J; Vallage, B; Ashman, J; Booth, C; Buttar, C; Carney, R; Cartwright, S; Combley, F; Dinsdale, M; Dogru, M; Hatfield, F; Martin, J; Parker, D; Reeves, P; Thompson, L; Barberio, E; Brandt, S; Burkhardt, H; Grupen, C; Meinhard, H; Mirabito, L; Schafer, U; Seywerd, H; Apollinari, G; Giannini, G; Gobbo, B; Liello, F; Ragusa, F; Rolandi, L; Stiegler, U; Bellantoni, L; Chen, X; Cinabro, D; Conway, J; Cowen, D; Feng, Z; Ferguson, D; Gao, Y; Grahl, J; Harton, J; Jacobsen, J; Jared, R; Johnson, R; Leclaire, B; Pan, Y; Pater, J; Saadi, Y; Sharma, V; Shi, Z; Tang, Y; Walsh, A; Wear, J; Weber, F; Whitney, M; Wu, S; Zobernig, G
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390439
Citazioni
  • Scopus 85
  • ???jsp.display-item.citation.isi??? 85
Social impact