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Measurement of the Z Resonance Parameters at LEP (1999) |
- Barate, R,
- Décamp, D,
- Ghez, P,
- Goy, C,
- Lees, J P,
- Lucotte, A,
- Merle, E,
- Minard, M N,
- Pietrzyk, B,
- Alemany, R,
- Casado, M P,
- Chmeissani, M,
- Comas, P,
- Crespo, J M,
- Fernández, E,
- Fernández-Bosman, M,
- Garrido, L,
- Graugès-Pous, E,
- Juste, A,
- Martínez, M,
- Merino, G,
- Miquel, R,
- Mir, L M,
- Orteu, S,
- Pacheco, A,
- Park, I C,
- Perlas, J A,
- Riu, I,
- Sánchez, F,
- Colaleo, A,
- Creanza, D,
- De Palma, M,
- 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,
- Bazarko, A,
- Becker, U,
- Boix, G,
- Bird, F,
- Blucher, E,
- Bonvicini, G,
- Bright-Thomas, P G,
- Cattaneo, M,
- Cerutti, F,
- Ciulli, V,
- Dissertori, G,
- Drevermann, H,
- Forty, Roger W,
- Frank, M,
- Greening, T C,
- Hagelberg, R,
- Halley, A W,
- Hansen, J B,
- Harvey, J,
- Jacobsen, R,
- Janot, P,
- Jost, B,
- Knobloch, J,
- Lazeyras, Pierre,
- Lehraus, Ivan,
- Maley, P,
- Mato, P,
- May, J,
- Moutoussi, A,
- Ranjard, F,
- Rolandi, Luigi,
- Schlatter, W D,
- Schmitt, M,
- Schneider, O,
- Spagnolo, P,
- Tejessy, W,
- Teubert, F,
- Tomalin, I R,
- Tournefier, E,
- Veenhof, R,
- Wiedenmann, W,
- Wright, A E,
- 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,
- Bertelsen, H,
- Fernley, T,
- Hansen, F,
- Hansen, J D,
- Hansen, J R,
- Hansen, P H,
- Lindahl, A,
- Møllerud, R,
- 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,
- Rougé, A,
- Rumpf, M,
- Swynghedauw, M,
- Tanaka, R,
- Verderi, M,
- Videau, H L,
- Focardi, E,
- Parrini, G,
- Zachariadou, K,
- Cavanaugh, R J,
- Corden, M,
- Georgiopoulos, C H,
- Antonelli, A,
- Bencivenni, G,
- Bologna, G,
- Bossi, F,
- Campana, P,
- Capon, G,
- Chiarella, V,
- Felici, G,
- Laurelli, P,
- Mannocchi, G,
- Murtas, F,
- Murtas, G P,
- Passalacqua, L,
- Pepé-Altarelli, M,
- Picchi, P,
- Colrain, P,
- Ten Have, I,
- Hughes, I S,
- Knowles, I G,
- Lynch, J G,
- Morton, W T,
- Raine, C,
- Reeves, P,
- O'Shea, V,
- Scarr, J M,
- Smith, K,
- Thompson, A S,
- Turnbull, R M,
- Buchmüller, O L,
- Dhamotharan, S,
- Geweniger, C,
- 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,
- Nash, J,
- Sciabà, A,
- Sedgbeer, J K,
- Thomson, E,
- Williams, M D,
- Ghete, V M,
- Girtler, P,
- Kneringer, E,
- Kuhn, D,
- Rudolph, G,
- Bowdery, C K,
- Buck, P G,
- Finch, A J,
- Foster, F,
- Hughes, G,
- Jones, R W L,
- Keemer, N R,
- Robertson, N A,
- Sloan, Terence,
- Snow, S W,
- Williams, M I,
- Bauerdick, L A T,
- Van Gemmeren, P,
- Giehl, I,
- Jakobs, K,
- Kasemann, M,
- Kleinknecht, K,
- Quast, G,
- Renk, B,
- Rohne, E,
- Sander, H G,
- Schmelling, M,
- Wachsmuth, H W,
- Wanke, R,
- Zeitnitz, C,
- Aubert, Jean-Jacques,
- Benchouk, C,
- Bonissent, A,
- Carr, J,
- Coyle, P,
- Etienne, F,
- Motsch, F,
- Payre, P,
- Rousseau, D,
- Talby, M,
- Thulasidas, M,
- Aleppo, M,
- Antonelli, M,
- Ragusa, F,
- Büscher, V,
- Dietl, H,
- Ganis, G,
- Hüttmann, K,
- Lütjens, G,
- Mannert, C,
- Männer, W,
- Moser, H G,
- Schael, S,
- Settles, Ronald,
- Seywerd, H C J,
- Stenzel, H,
- Wolf, G,
- Azzurri, P,
- Boucrot, J,
- Callot, O,
- Chen, S,
- Cordier, A,
- Davier, M,
- Duflot, L,
- Grivaz, J F,
- Heusse, P,
- Jacholkowska, A,
- Le Diberder, F R,
- Lefrançois, J,
- Lutz, A M,
- Schune, M H,
- Veillet, J J,
- Videau, I,
- Zerwas, D,
- Bagliesi, G,
- Bettarini, S,
- Boccali, T,
- Bozzi, C,
- Calderini, G,
- Dell'Orso, R,
- Fantechi, R,
- Ferrante, I,
- Fidecaro, F,
- Foà, L,
- Giassi, A,
- Gregorio, A,
- Ligabue, F,
- Lusiani, A,
- Marrocchesi, P S,
- Messineo, A,
- Palla, Fabrizio,
- Rizzo, G,
- Sanguinetti, G,
- Sguazzoni, G,
- Steinberger, Jack,
- Tenchini, Roberto,
- Vannini, C,
- Venturi, A,
- Verdini, P G,
- Blair, G A,
- Cowan, G D,
- Green, M G,
- Medcalf, T,
- Strong, J A,
- Botterill, David R,
- Clifft, R W,
- Edgecock, T R,
- Edwards, M,
- Haywood, S J,
- Norton, P R,
- Thompson, J C,
- 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,
- Vallage, B,
- Black, S N,
- Dann, J H,
- Kim, H Y,
- Konstantinidis, N P,
- Litke, A M,
- McNeil, M A,
- Taylor, G,
- Booth, C N,
- Cartwright, S L,
- Combley, F,
- Lehto, M H,
- Thompson, L F,
- Affholderbach, K,
- Barberio, E,
- Böhrer, A,
- Brandt, S,
- Burkhardt, H,
- Feigl, E,
- Grupen, Claus,
- Hess, J,
- Lutters, G,
- Meinhard, H,
- Minguet-Rodríguez, J A,
- Mirabito, L,
- Misiejuk, A,
- Neugebauer, E,
- Prange, G,
- Rivera, F,
- Saraiva, P,
- Schäfer, U,
- Sieler, U,
- Smolik, L,
- Stephan, F,
- Trier, H,
- Apollonio, M,
- Bosisio, L,
- Della Marina, R,
- Giannini, G,
- Gobbo, B,
- Musolino, G,
- Pitis, L,
- Kim, H,
- Rothberg, J E,
- Wasserbaech, S R,
- Armstrong, S R,
- Bellantoni, L,
- Cinabro, D,
- Conway, J S,
- Elmer, P,
- Feng, Z,
- Ferguson, D P S,
- Gao, Y,
- González, S,
- Grahl, J,
- Harton, J L,
- Hayes, O J,
- Hu, H,
- Jin, S,
- Johnson, R P,
- Kile, J,
- McNamara, P A,
- Nielsen, J,
- Orejudos, W,
- Pan, Y B,
- Saadi, Y,
- Scott, I J,
- Sharma, V,
- Walsh, A M,
- Walsh, J,
- Wear, J,
- Wu Sau Lan,
- Wu, X,
- Yamartino, J M,
- Zobernig, G
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Abstract |
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The properties of the Z resonance are measured from the analysis of 4.5 million Z decays into fermion pairs collected with the \Aleph\ detector at L EP. The data are consistent with lepton universality. The resonance parameters are measured to be $\MZ=(91.1885 \pm 0.0031)~\Gevcc$, $\GZ= (2.4951 \pm 0.0043)~\GeV$, $\spol=(41.559 \pm 0.058)$~nb and, combining the three lepton flavours $\Rl= 20.725\pm 0.039$. The corresponding number of light neutrino species is $N_{\nu}=2.983\pm0.013$ and the strong coupling constant is $\alpha_s(\MZ) = 0.114\pm {0.004} \pm 0.002_{\rm{QCD}} +\,0.005\,\log_{10}\left[\frac{\MH}{150\,{\rm GeV}/c^2 }\right]\,$. The lepton pair forward-backward asymmetry is measured to be $\Afbpol=0.0173 \pm 0.0016$ from which the effective weak mixing angle is derived: $\swsqeffl = 0.23089\pm 0.00089\,$. The measurement of the leptonic width $\Gll=84.02\pm0.15$~MeV leads to a determination of the effective $\rho$ parameter $\rho_{\rm eff}^{\rm lept} = 1.0064 \pm 0.0018$. The data support the Standard Model and favour a light Higgs. |
Publication details |
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Publications citing this publication (1) |
A study of the decay width difference in the $B^{0}_{s}-\overline{B}^{ 0}_{s}$ system using $\phi\phi$ correlations (2000)
- Barate, R.,
- Decamp, D.,
- Ghez, P.,
- Goy, C.,
- Lees, J P.,
- Merle, E.,
- Minard, M N.,
- Pietrzyk, B.,
- Alemany, R.,
- Bravo, S.,
- Casado, M P.,
- Chmeissani, M.,
- Crespo, J M.,
- Fernandez, E.,
- Fernandez-Bosman, M.,
- Garrido, L.,
- Graughs, E.,
- Martmnez, M.,
- Merino, G.,
- Miquel, R.,
- Mir, L M.,
- Pacheco, A.,
- Ruiz, H.,
- Colaleo, A.,
- Creanza, D.,
- De Palma, M.,
- Iaselli, G.,
- 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.,
- Boix, G.,
- Boix, G.,
- Cattaneo, M.,
- Cerutti, F.,
- Dissertori, G.,
- Drevermann, H.,
- Forty, R W.,
- Frank, M.,
- Greening, T C.,
- Halley, A W.,
- Hansen, J B.,
- Harvey, J.,
- Janot, P.,
- Jost, B.,
- Lehraus, I.,
- Mato, P.,
- Minten, A.,
- Moutoussi, A.,
- Ranjard, F.,
- Rolandi, L.,
- Schlatter, D.,
- Schmitt, M.,
- Schneider, O.,
- Spagnolo, P.,
- Tejessy, W.,
- Teubert, F.,
- Tournefier, E.,
- Wright, A E.,
- Ajaltouni, Z.,
- Badaud, F.,
- Chazelle, G.,
- Deschamps, O.,
- Falvard, A.,
- Gay, P.,
- Guicheney, C.,
- Henrard, P.,
- Jousset, J.,
- Michel, B.,
- Monteil, S.,
- Montret, J C.,
- Pallin, D.,
- Perret, P.,
- Podlyski, F.,
- Hansen, J D.,
- Hansen, J R.,
- Hansen, P H.,
- Nilsson, B S.,
- Wddndnen, A.,
- Daskalakis, G.,
- Kyriakis, A.,
- Markou, C.,
- Simopoulou, E.,
- Vayaki, A.,
- Blondel, A.,
- Bonneaud, G.,
- Brient, J C.,
- Rougi, A.,
- Rumpf, M.,
- Swynghedauw, M.,
- Verderi, M.,
- Videau, H.,
- Focardi, E.,
- Parrini, G.,
- Zachariadou, K.,
- Antonelli, A.,
- Bencivenni, G.,
- Bologna, G.,
- Bossi, F.,
- Campana, P.,
- Capon, G.,
- Chiarella, V.,
- Laurelli, P.,
- Mannocchi, G.,
- Murtas, F.,
- Murtas, G P.,
- Passalacqua, L.,
- Pepi-Altarelli, M.,
- Lynch, J G.,
- Negus, P.,
- O'Shea, V.,
- Raine, C.,
- Teixeira-Dias, P.,
- Thompson, A S.,
- Cavanaugh, R.,
- Dhamotharan, S.,
- Geweniger, C.,
- Hanke, P.,
- Hansper, G.,
- Hepp, V.,
- Kluge, E E.,
- Putzer, A.,
- Sommer, J.,
- Tittel, K.,
- Werner, S.,
- Wunsch, M.,
- Beuselinck, R.,
- Binnie, D M.,
- Cameron, W.,
- Dornan, P J.,
- Girone, M.,
- Marinelli, N.,
- Sedgbeer, J K.,
- Thompson, J C.,
- Thomson, E.,
- Ghete, V M.,
- Girtler, P.,
- Kneringer, E.,
- Kuhn, D.,
- Rudolph, G.,
- Bowdery, C K.,
- Buck, P G.,
- Finch, A J.,
- Foster, F.,
- Hughes, G.,
- Jones, R W L.,
- Robertson, N A.,
- Giehl, I.,
- Jakobs, K.,
- Kleinknecht, K.,
- Quast, G.,
- Renk, B.,
- Rohne, E.,
- Sander, H G.,
- Wachsmuth, H.,
- Zeitnitz, C.,
- Bonissent, A.,
- Carr, J.,
- Coyle, P.,
- Leroy, O.,
- Payre, P.,
- Rousseau, D.,
- Talby, M.,
- Aleppo, M.,
- Antonelli, M.,
- Ragusa, F.,
- Dietl, H.,
- Ganis, G.,
- Ganis, G.,
- Ganis, G.,
- Mannert, C.,
- Mdnner, W.,
- Moser, H G.,
- Schael, S.,
- Settles, R.,
- Stenzel, H.,
- Wiedenmann, W.,
- Wolf, G.,
- Azzurri, P.,
- Boucrot, J.,
- Callot, O.,
- Chen, S.,
- Cordier, A.,
- Davier, M.,
- Duflot, L.,
- Grivaz, J F.,
- Heusse, P.,
- Jacholkowska, A.,
- Le Diberder, F.,
- Lefrangois, J.,
- Lutz, A M.,
- Schune, M H.,
- Veillet, J J.,
- Videau, I.,
- Zerwas, D.,
- Bagliesi, G.,
- Boccali, T.,
- Calderini, G.,
- Ciulli, V.,
- Ciulli, V.,
- Giassi, A.,
- Ligabue, F.,
- Messineo, A.,
- Palla, F.,
- Rizzo, G.,
- Sanguinetti, G.,
- Sanguinetti, G.,
- Sguazzoni, G.,
- Tenchini, R.,
- Venturi, A.,
- Verdini, P G.,
- Blair, G A.,
- Cowan, G.,
- Green, M G.,
- Medcalf, T.,
- Strong, J A.,
- Clifft, R W.,
- Edgecock, T R.,
- Norton, P R.,
- Tomalin, I R.,
- Bloch-Devaux, B.,
- Colas, P.,
- Emery, S.,
- Kozanecki, W.,
- Langon, E.,
- Lemaire, M C.,
- Locci, E.,
- Pirez, 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.,
- Litke, A M.,
- McNeil, M A.,
- Taylor, G.,
- Booth, C N.,
- Cartwright, S.,
- Combley, F.,
- Lehto, M.,
- Thompson, L F.,
- Affholderbach, K.,
- Bvhrer, A.,
- Brandt, S.,
- Grupen, C.,
- Misiejuk, A.,
- Prange, G.,
- Sieler, U.,
- Giannini, G.,
- Gobbo, B.,
- Rothberg, J E.,
- Wasserbaech, S.,
- Armstrong, S R.,
- Elmer, P.,
- Ferguson, D P S.,
- Gao, Y.,
- Gonzalez, S.,
- Hayes, O J.,
- Hu, H.,
- Jin, S.,
- Kile, J.,
- McNamara, P A.,
- Nielsen, J.,
- Orejudos, W.,
- Pan, Y B.,
- Saadi, Y.,
- Scott, I J.,
- Walsh, J.,
- Wu Sau, Lan.,
- Wu, X.,
- Zobernig, G.
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