Measurements of cross sections and forward-backward asymmetries at the Z resonance and determination of electroweak parameters

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M. G. Alviggi, G. Ambrosi, H. Anderhub, V. P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, L. Baksay, A. BalandrasR. C. Ball, S. Banerjee, S. W. Banerjee, A. Barczyk, R. Barillère, L. Barone, P. Bartalini, M. Basile, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, J. Berdugo, P. Berges, B. Bertucci, B. L. Betev, S. Bhattacharya, M. Biasini, A. Biland, J. J. Blaising, S. C. Blyth, G. J. Bobbink, A. Böhm, L. Boldizsár, B. Borgia, D. Bourilkov, M. Bourquin, S. Braccini, J. G. Branson, V. Brigljevic, F. Brochu, I. C. Brock, A. Buffini, A. Buijs, J. D. Burger, W. J. Burger, A. Button, X. D. Cai, M. Campanelli, M. Capell, G. Cara Romeo, G. Carlino, A. M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y. H. Chang, U. K. Chaturvedi, M. Chemarin, A. Chen, G. Chen, G. M. Chen, H. F. Chen, H. S. Chen, G. Chiefari, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, G. Coignet, A. P. Colijn, N. Colino, S. Costantini, F. Cotorobai, B. Cozzoni, B. de la Cruz, A. Csilling, S. Cucciarelli, T. S. Dai, J. A. van Dalen, R. D'Alessandro, R. de Asmundis, P. Déglon, A. Degré, K. Deiters, D. della Volpe, P. Denes, F. DeNotaristefani, A. De Salvo, M. Diemoz, D. van Dierendonck, F. Di Lodovico, C. Dionisi, M. Dittmar, A. Dominguez, A. Doria, M. T. Dova, D. Duchesneau, D. Dufournaud, P. Duinker, I. Duran, S. Dutta, H. El Mamouni, A. Engler, F. J. Eppling, F. C. Erné, P. Extermann, M. Fabre, R. Faccini, M. A. Falagan, S. Falciano, A. Favara, J. Fay, O. Fedin, M. Felcini, T. Ferguson, F. Ferroni, H. Fesefeldt, E. Fiandrini, J. H. Field, F. Filthaut, P. H. Fisher, I. Fisk, G. Forconi, L. Fredj, K. Freudenreich, C. Furetta, Y. Galaktionov, S. N. Ganguli, P. Garcia-Abia, M. Gataullin, S. S. Gau, S. Gentile, N. Gheordanescu, S. Giagu, Z. F. Gong, G. Grenier, O. Grimm, M. W. Gruenewald, M. Guida, R. van Gulik, V. K. Gupta, A. Gurtu, L. J. Gutay, D. Haas, A. Hasan, D. Hatzifotiadou, T. Hebbeker, A. Hervé, P. Hidas, J. Hirschfelder, H. Hofer, G. Holzner, H. Hoorani, S. R. Hou, I. Iashvili, V. Innocente, B. N. Jin, L. W. Jones, P. de Jong, I. Josa-Mutuberría, R. A. Khan, M. Kaur, M. N. Kienzle-Focacci, D. Kim, J. K. Kim, J. Kirkby, D. Kiss, W. Kittel, A. Klimentov, A. C. König, E. Koffeman, A. Kopp, V. Koutsenko, M. Kräber, R. W. Kraemer, W. Krenz, A. Krüger, H. Kuijten, A. Kunin, P. Ladron de Guevara, I. Laktineh, G. Landi, K. Lassila-Perini, M. Lebeau, A. Lebedev, P. Lebrun, P. Lecomte, P. Lecoq, P. Le Coultre, H. J. Lee, J. M. Le Goff, R. Leiste, E. Leonardi, P. Levtchenko, C. Li, S. Likhoded, C. H. Lin, W. T. Lin, F. L. Linde, L. Lista, Z. A. Liu, W. Lohmann, E. Longo, Y. S. Lu, W. Lu, K. Lübelsmeyer, C. Luci, D. Luckey, L. Lugnier, L. Luminari, W. Lustermann, W. G. Ma, M. Maity, L. Malgeri, A. Malinin, C. Maña, D. Mangeol, P. Marchesini, G. Marian, J. P. Martin, F. Marzano, G. G G Massaro, K. Mazumdar, R. R. McNeil, S. Mele, L. Merola, M. Merk, M. Meschini, W. J. Metzger, M. von der Mey, A. Mihul, H. Milcent, G. Mirabelli, J. Mnich, G. B. Mohanty, P. Molnar, B. Monteleoni, T. Moulik, G. S. Muanza, F. Muheim, A. J M Muijs, M. Musy, M. Napolitano, F. Nessi-Tedaldi, H. Newman, T. Niessen, A. Nisati, H. Nowak, G. Organtini, A. Oulianov, C. Palomares, D. Pandoulas, S. Paoletti, A. Paoloni, P. Paolucci, R. Paramatti, H. K. Park, I. H. Park, G. Pascale, G. Passaleva, S. Patricelli, T. Paul, M. Pauluzzi, C. Paus, F. Pauss, D. Peach, M. Pedace, S. Pensotti, D. Perret-Gallix, B. Petersen, D. Piccolo, F. Pierella, M. Pieri, P. A. Piroué, E. Pistolesi, V. Plyaskin, M. Pohl, V. Pojidaev, H. Postema, J. Pothier, N. Produit, D. O. Prokofiev, D. Prokofiev, J. Quartieri, G. Rahal-Callot, M. A. Rahaman, P. Raics, N. Raja, R. Ramelli, P. G. Rancoita, A. Raspereza, G. Raven, M. Rescigno, S. Reucroft, T. van Rhee, S. Riemann, K. Riles, A. Robohm, J. Rodin, B. P. Roe, L. Romero, A. Rosca, S. Rosier-Lees, S. Roth, J. A. Rubio, D. Ruschmeier, H. Rykaczewski, S. Saremi, S. Sarkar, J. Salicio, E. Sanchez, M. P. Sanders, M. E. Sarakinos, C. Schäfer, V. Schegelsky, S. Schmidt-Kaerst, D. Schmitz, H. Schopper, D. J. Schotanus, G. Schwering, C. Sciacca, D. Sciarrino, A. Seganti, L. Servoli, S. Shevchenko, N. Shivarov, V. Shoutko, E. Shumilov, A. Shvorob, T. Siedenburg, D. Son, B. Smith, P. Spillantini, M. Steuer, D. P. Stickland, A. Stone, H. Stone, B. Stoyanov, A. Straessner, K. Sudhakar, G. Sultanov, L. Z. Sun, H. Suter, J. D. Swain, Z. Szillási, T. Sztaricskai, X. W. Tang, L. Tauscher, L. Taylor, B. Tellili, C. Timmermans, S. C C Ting, S. M. Ting, S. C. Tonwar, J. Tóth, C. Tully, K. L. Tung, J. Ulbricht, U. Uwer, E. Valente, G. Vesztergombi, I. Vetlitsky, D. Vicinanza, G. Viertel, S. Villa, M. Vivargent, S. Vlachos, I. Vodopianov, H. Vogel, H. Vogt, I. Vorobiev, A. A. Vorobyov, A. Vorvolakos, M. Wadhwa, W. Wallraff, M. Wang, X. L. Wang, Z. M. Wang, A. Weber, M. Weber, P. Wienemann, H. Wilkens, S. X. Wu, S. Wynhoff, L. Xia, Z. Z. Xu, B. Z. Yang, C. G. Yang, H. J. Yang, M. Yang, J. B. Ye, S. C. Yeh, J. M. You, A. Zalite, Y. Zalite, Z. P. Zhang, G. Y. Zhu, R. Y. Zhu, A. Zichichi, G. Zilizi, M. Zoller

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

We report on measurements of hadronic and leptonic cross sections and leptonic forward-backward asymmetries performed with the L3 detector in the years 1993-95. A total luminosity of 103 pb -1 was collected at centre-of-mass energies √s ≈ m z and √s ≈ m z±1.8 GeV which corresponds to 2.5 million hadronic and 245 thousand leptonic events selected. These data lead to a significantly improved determination of Z parameters. From the total cross sections, combined with our measurements in 1990-92, we obtain the final results: m z = 91 189.8 ± 3.1 MeV , Γ z = 2 502.4 ± 4.2 MeV , Γ had = 1 751.1 ± 3.8 MeV , Γ = 84.14 ± 0.17 MeV . An invisible width of Γ inv = 499.1 ± 2.9 MeV is derived which in the Standard Model yields for the number of light neutrino species N v = 2.978 ± 0.014. Adding our results on the leptonic forward-backward asymmetries and the tau polarisation, the effective vector and axial-vector coupling constants of the neutral weak current to charged leptons are determined to be ḡ V = -0.0397 ± 0.0017 and ḡ A = -0.50153 ± 0.00053. Including our measurements of the Z → bb̄ forward-backward and quark charge asymmetries a value for the effective electroweak mixing angle of sin 2θ̄ w = 0.23093 ± 0.00066 is derived. All these measurements are in good agreement with the Standard Model of electroweak interactions. Using all our measurements of electroweak observables an upper limit on the mass of the Standard Model Higgs boson of m H <133 GeV is set at 95% confidence level.

Original languageEnglish
Pages (from-to)1-40
Number of pages40
JournalEuropean Physical Journal C
Volume16
Issue number1
Publication statusPublished - 2000

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asymmetry
cross sections
Higgs bosons
center of mass
leptons
confidence
neutrinos
luminosity
quarks
detectors
polarization
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Acciarri, M., Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., ... Zoller, M. (2000). Measurements of cross sections and forward-backward asymmetries at the Z resonance and determination of electroweak parameters. European Physical Journal C, 16(1), 1-40.

Measurements of cross sections and forward-backward asymmetries at the Z resonance and determination of electroweak parameters. / Acciarri, M.; Achard, P.; Adriani, O.; Aguilar-Benitez, M.; Alcaraz, J.; Alemanni, G.; Allaby, J.; Aloisio, A.; Alviggi, M. G.; Ambrosi, G.; Anderhub, H.; Andreev, V. P.; Angelescu, T.; Anselmo, F.; Arefiev, A.; Azemoon, T.; Aziz, T.; Bagnaia, P.; Baksay, L.; Balandras, A.; Ball, R. C.; Banerjee, S.; Banerjee, S. W.; Barczyk, A.; Barillère, R.; Barone, L.; Bartalini, P.; Basile, M.; Battiston, R.; Bay, A.; Becattini, F.; Becker, U.; Behner, F.; Bellucci, L.; Berdugo, J.; Berges, P.; Bertucci, B.; Betev, B. L.; Bhattacharya, S.; Biasini, M.; Biland, A.; Blaising, J. J.; Blyth, S. C.; Bobbink, G. J.; Böhm, A.; Boldizsár, L.; Borgia, B.; Bourilkov, D.; Bourquin, M.; Braccini, S.; Branson, J. G.; Brigljevic, V.; Brochu, F.; Brock, I. C.; Buffini, A.; Buijs, A.; Burger, J. D.; Burger, W. J.; Button, A.; Cai, X. D.; Campanelli, M.; Capell, M.; Cara Romeo, G.; Carlino, G.; Cartacci, A. M.; Casaus, J.; Castellini, G.; Cavallari, F.; Cavallo, N.; Cecchi, C.; Cerrada, M.; Cesaroni, F.; Chamizo, M.; Chang, Y. H.; Chaturvedi, U. K.; Chemarin, M.; Chen, A.; Chen, G.; Chen, G. M.; Chen, H. F.; Chen, H. S.; Chiefari, G.; Cifarelli, L.; Cindolo, F.; Civinini, C.; Clare, I.; Clare, R.; Coignet, G.; Colijn, A. P.; Colino, N.; Costantini, S.; Cotorobai, F.; Cozzoni, B.; de la Cruz, B.; Csilling, A.; Cucciarelli, S.; Dai, T. S.; van Dalen, J. A.; D'Alessandro, R.; de Asmundis, R.; Déglon, P.; Degré, A.; Deiters, K.; della Volpe, D.; Denes, P.; DeNotaristefani, F.; De Salvo, A.; Diemoz, M.; van Dierendonck, D.; Di Lodovico, F.; Dionisi, C.; Dittmar, M.; Dominguez, A.; Doria, A.; Dova, M. T.; Duchesneau, D.; Dufournaud, D.; Duinker, P.; Duran, I.; Dutta, S.; El Mamouni, H.; Engler, A.; Eppling, F. J.; Erné, F. C.; Extermann, P.; Fabre, M.; Faccini, R.; Falagan, M. A.; Falciano, S.; Favara, A.; Fay, J.; Fedin, O.; Felcini, M.; Ferguson, T.; Ferroni, F.; Fesefeldt, H.; Fiandrini, E.; Field, J. H.; Filthaut, F.; Fisher, P. H.; Fisk, I.; Forconi, G.; Fredj, L.; Freudenreich, K.; Furetta, C.; Galaktionov, Y.; Ganguli, S. N.; Garcia-Abia, P.; Gataullin, M.; Gau, S. S.; Gentile, S.; Gheordanescu, N.; Giagu, S.; Gong, Z. F.; Grenier, G.; Grimm, O.; Gruenewald, M. W.; Guida, M.; van Gulik, R.; Gupta, V. K.; Gurtu, A.; Gutay, L. J.; Haas, D.; Hasan, A.; Hatzifotiadou, D.; Hebbeker, T.; Hervé, A.; Hidas, P.; Hirschfelder, J.; Hofer, H.; Holzner, G.; Hoorani, H.; Hou, S. R.; Iashvili, I.; Innocente, V.; Jin, B. N.; Jones, L. W.; de Jong, P.; Josa-Mutuberría, I.; Khan, R. A.; Kaur, M.; Kienzle-Focacci, M. N.; Kim, D.; Kim, J. K.; Kirkby, J.; Kiss, D.; Kittel, W.; Klimentov, A.; König, A. C.; Koffeman, E.; Kopp, A.; Koutsenko, V.; Kräber, M.; Kraemer, R. W.; Krenz, W.; Krüger, A.; Kuijten, H.; Kunin, A.; Ladron de Guevara, P.; Laktineh, I.; Landi, G.; Lassila-Perini, K.; Lebeau, M.; Lebedev, A.; Lebrun, P.; Lecomte, P.; Lecoq, P.; Le Coultre, P.; Lee, H. J.; Le Goff, J. M.; Leiste, R.; Leonardi, E.; Levtchenko, P.; Li, C.; Likhoded, S.; Lin, C. H.; Lin, W. T.; Linde, F. L.; Lista, L.; Liu, Z. A.; Lohmann, W.; Longo, E.; Lu, Y. S.; Lu, W.; Lübelsmeyer, K.; Luci, C.; Luckey, D.; Lugnier, L.; Luminari, L.; Lustermann, W.; Ma, W. G.; Maity, M.; Malgeri, L.; Malinin, A.; Maña, C.; Mangeol, D.; Marchesini, P.; Marian, G.; Martin, J. P.; Marzano, F.; Massaro, G. G G; Mazumdar, K.; McNeil, R. R.; Mele, S.; Merola, L.; Merk, M.; Meschini, M.; Metzger, W. J.; von der Mey, M.; Mihul, A.; Milcent, H.; Mirabelli, G.; Mnich, J.; Mohanty, G. B.; Molnar, P.; Monteleoni, B.; Moulik, T.; Muanza, G. S.; Muheim, F.; Muijs, A. J M; Musy, M.; Napolitano, M.; Nessi-Tedaldi, F.; Newman, H.; Niessen, T.; Nisati, A.; Nowak, H.; Organtini, G.; Oulianov, A.; Palomares, C.; Pandoulas, D.; Paoletti, S.; Paoloni, A.; Paolucci, P.; Paramatti, R.; Park, H. K.; Park, I. H.; Pascale, G.; Passaleva, G.; Patricelli, S.; Paul, T.; Pauluzzi, M.; Paus, C.; Pauss, F.; Peach, D.; Pedace, M.; Pensotti, S.; Perret-Gallix, D.; Petersen, B.; Piccolo, D.; Pierella, F.; Pieri, M.; Piroué, P. A.; Pistolesi, E.; Plyaskin, V.; Pohl, M.; Pojidaev, V.; Postema, H.; Pothier, J.; Produit, N.; Prokofiev, D. O.; Prokofiev, D.; Quartieri, J.; Rahal-Callot, G.; Rahaman, M. A.; Raics, P.; Raja, N.; Ramelli, R.; Rancoita, P. G.; Raspereza, A.; Raven, G.; Rescigno, M.; Reucroft, S.; van Rhee, T.; Riemann, S.; Riles, K.; Robohm, A.; Rodin, J.; Roe, B. P.; Romero, L.; Rosca, A.; Rosier-Lees, S.; Roth, S.; Rubio, J. A.; Ruschmeier, D.; Rykaczewski, H.; Saremi, S.; Sarkar, S.; Salicio, J.; Sanchez, E.; Sanders, M. P.; Sarakinos, M. E.; Schäfer, C.; Schegelsky, V.; Schmidt-Kaerst, S.; Schmitz, D.; Schopper, H.; Schotanus, D. J.; Schwering, G.; Sciacca, C.; Sciarrino, D.; Seganti, A.; Servoli, L.; Shevchenko, S.; Shivarov, N.; Shoutko, V.; Shumilov, E.; Shvorob, A.; Siedenburg, T.; Son, D.; Smith, B.; Spillantini, P.; Steuer, M.; Stickland, D. P.; Stone, A.; Stone, H.; Stoyanov, B.; Straessner, A.; Sudhakar, K.; Sultanov, G.; Sun, L. Z.; Suter, H.; Swain, J. D.; Szillási, Z.; Sztaricskai, T.; Tang, X. W.; Tauscher, L.; Taylor, L.; Tellili, B.; Timmermans, C.; Ting, S. C C; Ting, S. M.; Tonwar, S. C.; Tóth, J.; Tully, C.; Tung, K. L.; Ulbricht, J.; Uwer, U.; Valente, E.; Vesztergombi, G.; Vetlitsky, I.; Vicinanza, D.; Viertel, G.; Villa, S.; Vivargent, M.; Vlachos, S.; Vodopianov, I.; Vogel, H.; Vogt, H.; Vorobiev, I.; Vorobyov, A. A.; Vorvolakos, A.; Wadhwa, M.; Wallraff, W.; Wang, M.; Wang, X. L.; Wang, Z. M.; Weber, A.; Weber, M.; Wienemann, P.; Wilkens, H.; Wu, S. X.; Wynhoff, S.; Xia, L.; Xu, Z. Z.; Yang, B. Z.; Yang, C. G.; Yang, H. J.; Yang, M.; Ye, J. B.; Yeh, S. C.; You, J. M.; Zalite, A.; Zalite, Y.; Zhang, Z. P.; Zhu, G. Y.; Zhu, R. Y.; Zichichi, A.; Zilizi, G.; Zoller, M.

In: European Physical Journal C, Vol. 16, No. 1, 2000, p. 1-40.

Research output: Contribution to journalArticle

Acciarri, M, Achard, P, Adriani, O, Aguilar-Benitez, M, Alcaraz, J, Alemanni, G, Allaby, J, Aloisio, A, Alviggi, MG, Ambrosi, G, Anderhub, H, Andreev, VP, Angelescu, T, Anselmo, F, Arefiev, A, Azemoon, T, Aziz, T, Bagnaia, P, Baksay, L, Balandras, A, Ball, RC, Banerjee, S, Banerjee, SW, Barczyk, A, Barillère, R, Barone, L, Bartalini, P, Basile, M, Battiston, R, Bay, A, Becattini, F, Becker, U, Behner, F, Bellucci, L, Berdugo, J, Berges, P, Bertucci, B, Betev, BL, Bhattacharya, S, Biasini, M, Biland, A, Blaising, JJ, Blyth, SC, Bobbink, GJ, Böhm, A, Boldizsár, L, Borgia, B, Bourilkov, D, Bourquin, M, Braccini, S, Branson, JG, Brigljevic, V, Brochu, F, Brock, IC, Buffini, A, Buijs, A, Burger, JD, Burger, WJ, Button, A, Cai, XD, Campanelli, M, Capell, M, Cara Romeo, G, Carlino, G, Cartacci, AM, Casaus, J, Castellini, G, Cavallari, F, Cavallo, N, Cecchi, C, Cerrada, M, Cesaroni, F, Chamizo, M, Chang, YH, Chaturvedi, UK, Chemarin, M, Chen, A, Chen, G, Chen, GM, Chen, HF, Chen, HS, Chiefari, G, Cifarelli, L, Cindolo, F, Civinini, C, Clare, I, Clare, R, Coignet, G, Colijn, AP, Colino, N, Costantini, S, Cotorobai, F, Cozzoni, B, de la Cruz, B, Csilling, A, Cucciarelli, S, Dai, TS, van Dalen, JA, D'Alessandro, R, de Asmundis, R, Déglon, P, Degré, A, Deiters, K, della Volpe, D, Denes, P, DeNotaristefani, F, De Salvo, A, Diemoz, M, van Dierendonck, D, Di Lodovico, F, Dionisi, C, Dittmar, M, Dominguez, A, Doria, A, Dova, MT, Duchesneau, D, Dufournaud, D, Duinker, P, Duran, I, Dutta, S, El Mamouni, H, Engler, A, Eppling, FJ, Erné, FC, Extermann, P, Fabre, M, Faccini, R, Falagan, MA, Falciano, S, Favara, A, Fay, J, Fedin, O, Felcini, M, Ferguson, T, Ferroni, F, Fesefeldt, H, Fiandrini, E, Field, JH, Filthaut, F, Fisher, PH, Fisk, I, Forconi, G, Fredj, L, Freudenreich, K, Furetta, C, Galaktionov, Y, Ganguli, SN, Garcia-Abia, P, Gataullin, M, Gau, SS, Gentile, S, Gheordanescu, N, Giagu, S, Gong, ZF, Grenier, G, Grimm, O, Gruenewald, MW, Guida, M, van Gulik, R, Gupta, VK, Gurtu, A, Gutay, LJ, Haas, D, Hasan, A, Hatzifotiadou, D, Hebbeker, T, Hervé, A, Hidas, P, Hirschfelder, J, Hofer, H, Holzner, G, Hoorani, H, Hou, SR, Iashvili, I, Innocente, V, Jin, BN, Jones, LW, de Jong, P, Josa-Mutuberría, I, Khan, RA, Kaur, M, Kienzle-Focacci, MN, Kim, D, Kim, JK, Kirkby, J, Kiss, D, Kittel, W, Klimentov, A, König, AC, Koffeman, E, Kopp, A, Koutsenko, V, Kräber, M, Kraemer, RW, Krenz, W, Krüger, A, Kuijten, H, Kunin, A, Ladron de Guevara, P, Laktineh, I, Landi, G, Lassila-Perini, K, Lebeau, M, Lebedev, A, Lebrun, P, Lecomte, P, Lecoq, P, Le Coultre, P, Lee, HJ, Le Goff, JM, Leiste, R, Leonardi, E, Levtchenko, P, Li, C, Likhoded, S, Lin, CH, Lin, WT, Linde, FL, Lista, L, Liu, ZA, Lohmann, W, Longo, E, Lu, YS, Lu, W, Lübelsmeyer, K, Luci, C, Luckey, D, Lugnier, L, Luminari, L, Lustermann, W, Ma, WG, Maity, M, Malgeri, L, Malinin, A, Maña, C, Mangeol, D, Marchesini, P, Marian, G, Martin, JP, Marzano, F, Massaro, GGG, Mazumdar, K, McNeil, RR, Mele, S, Merola, L, Merk, M, Meschini, M, Metzger, WJ, von der Mey, M, Mihul, A, Milcent, H, Mirabelli, G, Mnich, J, Mohanty, GB, Molnar, P, Monteleoni, B, Moulik, T, Muanza, GS, Muheim, F, Muijs, AJM, Musy, M, Napolitano, M, Nessi-Tedaldi, F, Newman, H, Niessen, T, Nisati, A, Nowak, H, Organtini, G, Oulianov, A, Palomares, C, Pandoulas, D, Paoletti, S, Paoloni, A, Paolucci, P, Paramatti, R, Park, HK, Park, IH, Pascale, G, Passaleva, G, Patricelli, S, Paul, T, Pauluzzi, M, Paus, C, Pauss, F, Peach, D, Pedace, M, Pensotti, S, Perret-Gallix, D, Petersen, B, Piccolo, D, Pierella, F, Pieri, M, Piroué, PA, Pistolesi, E, Plyaskin, V, Pohl, M, Pojidaev, V, Postema, H, Pothier, J, Produit, N, Prokofiev, DO, Prokofiev, D, Quartieri, J, Rahal-Callot, G, Rahaman, MA, Raics, P, Raja, N, Ramelli, R, Rancoita, PG, Raspereza, A, Raven, G, Rescigno, M, Reucroft, S, van Rhee, T, Riemann, S, Riles, K, Robohm, A, Rodin, J, Roe, BP, Romero, L, Rosca, A, Rosier-Lees, S, Roth, S, Rubio, JA, Ruschmeier, D, Rykaczewski, H, Saremi, S, Sarkar, S, Salicio, J, Sanchez, E, Sanders, MP, Sarakinos, ME, Schäfer, C, Schegelsky, V, Schmidt-Kaerst, S, Schmitz, D, Schopper, H, Schotanus, DJ, Schwering, G, Sciacca, C, Sciarrino, D, Seganti, A, Servoli, L, Shevchenko, S, Shivarov, N, Shoutko, V, Shumilov, E, Shvorob, A, Siedenburg, T, Son, D, Smith, B, Spillantini, P, Steuer, M, Stickland, DP, Stone, A, Stone, H, Stoyanov, B, Straessner, A, Sudhakar, K, Sultanov, G, Sun, LZ, Suter, H, Swain, JD, Szillási, Z, Sztaricskai, T, Tang, XW, Tauscher, L, Taylor, L, Tellili, B, Timmermans, C, Ting, SCC, Ting, SM, Tonwar, SC, Tóth, J, Tully, C, Tung, KL, Ulbricht, J, Uwer, U, Valente, E, Vesztergombi, G, Vetlitsky, I, Vicinanza, D, Viertel, G, Villa, S, Vivargent, M, Vlachos, S, Vodopianov, I, Vogel, H, Vogt, H, Vorobiev, I, Vorobyov, AA, Vorvolakos, A, Wadhwa, M, Wallraff, W, Wang, M, Wang, XL, Wang, ZM, Weber, A, Weber, M, Wienemann, P, Wilkens, H, Wu, SX, Wynhoff, S, Xia, L, Xu, ZZ, Yang, BZ, Yang, CG, Yang, HJ, Yang, M, Ye, JB, Yeh, SC, You, JM, Zalite, A, Zalite, Y, Zhang, ZP, Zhu, GY, Zhu, RY, Zichichi, A, Zilizi, G & Zoller, M 2000, 'Measurements of cross sections and forward-backward asymmetries at the Z resonance and determination of electroweak parameters', European Physical Journal C, vol. 16, no. 1, pp. 1-40.
Acciarri, M. ; Achard, P. ; Adriani, O. ; Aguilar-Benitez, M. ; Alcaraz, J. ; Alemanni, G. ; Allaby, J. ; Aloisio, A. ; Alviggi, M. G. ; Ambrosi, G. ; Anderhub, H. ; Andreev, V. P. ; Angelescu, T. ; Anselmo, F. ; Arefiev, A. ; Azemoon, T. ; Aziz, T. ; Bagnaia, P. ; Baksay, L. ; Balandras, A. ; Ball, R. C. ; Banerjee, S. ; Banerjee, S. W. ; Barczyk, A. ; Barillère, R. ; Barone, L. ; Bartalini, P. ; Basile, M. ; Battiston, R. ; Bay, A. ; Becattini, F. ; Becker, U. ; Behner, F. ; Bellucci, L. ; Berdugo, J. ; Berges, P. ; Bertucci, B. ; Betev, B. L. ; Bhattacharya, S. ; Biasini, M. ; Biland, A. ; Blaising, J. J. ; Blyth, S. C. ; Bobbink, G. J. ; Böhm, A. ; Boldizsár, L. ; Borgia, B. ; Bourilkov, D. ; Bourquin, M. ; Braccini, S. ; Branson, J. G. ; Brigljevic, V. ; Brochu, F. ; Brock, I. C. ; Buffini, A. ; Buijs, A. ; Burger, J. D. ; Burger, W. J. ; Button, A. ; Cai, X. D. ; Campanelli, M. ; Capell, M. ; Cara Romeo, G. ; Carlino, G. ; Cartacci, A. M. ; Casaus, J. ; Castellini, G. ; Cavallari, F. ; Cavallo, N. ; Cecchi, C. ; Cerrada, M. ; Cesaroni, F. ; Chamizo, M. ; Chang, Y. H. ; Chaturvedi, U. K. ; Chemarin, M. ; Chen, A. ; Chen, G. ; Chen, G. M. ; Chen, H. F. ; Chen, H. S. ; Chiefari, G. ; Cifarelli, L. ; Cindolo, F. ; Civinini, C. ; Clare, I. ; Clare, R. ; Coignet, G. ; Colijn, A. P. ; Colino, N. ; Costantini, S. ; Cotorobai, F. ; Cozzoni, B. ; de la Cruz, B. ; Csilling, A. ; Cucciarelli, S. ; Dai, T. S. ; van Dalen, J. A. ; D'Alessandro, R. ; de Asmundis, R. ; Déglon, P. ; Degré, A. ; Deiters, K. ; della Volpe, D. ; Denes, P. ; DeNotaristefani, F. ; De Salvo, A. ; Diemoz, M. ; van Dierendonck, D. ; Di Lodovico, F. ; Dionisi, C. ; Dittmar, M. ; Dominguez, A. ; Doria, A. ; Dova, M. T. ; Duchesneau, D. ; Dufournaud, D. ; Duinker, P. ; Duran, I. ; Dutta, S. ; El Mamouni, H. ; Engler, A. ; Eppling, F. J. ; Erné, F. C. ; Extermann, P. ; Fabre, M. ; Faccini, R. ; Falagan, M. A. ; Falciano, S. ; Favara, A. ; Fay, J. ; Fedin, O. ; Felcini, M. ; Ferguson, T. ; Ferroni, F. ; Fesefeldt, H. ; Fiandrini, E. ; Field, J. H. ; Filthaut, F. ; Fisher, P. H. ; Fisk, I. ; Forconi, G. ; Fredj, L. ; Freudenreich, K. ; Furetta, C. ; Galaktionov, Y. ; Ganguli, S. N. ; Garcia-Abia, P. ; Gataullin, M. ; Gau, S. S. ; Gentile, S. ; Gheordanescu, N. ; Giagu, S. ; Gong, Z. F. ; Grenier, G. ; Grimm, O. ; Gruenewald, M. W. ; Guida, M. ; van Gulik, R. ; Gupta, V. K. ; Gurtu, A. ; Gutay, L. J. ; Haas, D. ; Hasan, A. ; Hatzifotiadou, D. ; Hebbeker, T. ; Hervé, A. ; Hidas, P. ; Hirschfelder, J. ; Hofer, H. ; Holzner, G. ; Hoorani, H. ; Hou, S. R. ; Iashvili, I. ; Innocente, V. ; Jin, B. N. ; Jones, L. W. ; de Jong, P. ; Josa-Mutuberría, I. ; Khan, R. A. ; Kaur, M. ; Kienzle-Focacci, M. N. ; Kim, D. ; Kim, J. K. ; Kirkby, J. ; Kiss, D. ; Kittel, W. ; Klimentov, A. ; König, A. C. ; Koffeman, E. ; Kopp, A. ; Koutsenko, V. ; Kräber, M. ; Kraemer, R. W. ; Krenz, W. ; Krüger, A. ; Kuijten, H. ; Kunin, A. ; Ladron de Guevara, P. ; Laktineh, I. ; Landi, G. ; Lassila-Perini, K. ; Lebeau, M. ; Lebedev, A. ; Lebrun, P. ; Lecomte, P. ; Lecoq, P. ; Le Coultre, P. ; Lee, H. J. ; Le Goff, J. M. ; Leiste, R. ; Leonardi, E. ; Levtchenko, P. ; Li, C. ; Likhoded, S. ; Lin, C. H. ; Lin, W. T. ; Linde, F. L. ; Lista, L. ; Liu, Z. A. ; Lohmann, W. ; Longo, E. ; Lu, Y. S. ; Lu, W. ; Lübelsmeyer, K. ; Luci, C. ; Luckey, D. ; Lugnier, L. ; Luminari, L. ; Lustermann, W. ; Ma, W. G. ; Maity, M. ; Malgeri, L. ; Malinin, A. ; Maña, C. ; Mangeol, D. ; Marchesini, P. ; Marian, G. ; Martin, J. P. ; Marzano, F. ; Massaro, G. G G ; Mazumdar, K. ; McNeil, R. R. ; Mele, S. ; Merola, L. ; Merk, M. ; Meschini, M. ; Metzger, W. J. ; von der Mey, M. ; Mihul, A. ; Milcent, H. ; Mirabelli, G. ; Mnich, J. ; Mohanty, G. B. ; Molnar, P. ; Monteleoni, B. ; Moulik, T. ; Muanza, G. S. ; Muheim, F. ; Muijs, A. J M ; Musy, M. ; Napolitano, M. ; Nessi-Tedaldi, F. ; Newman, H. ; Niessen, T. ; Nisati, A. ; Nowak, H. ; Organtini, G. ; Oulianov, A. ; Palomares, C. ; Pandoulas, D. ; Paoletti, S. ; Paoloni, A. ; Paolucci, P. ; Paramatti, R. ; Park, H. K. ; Park, I. H. ; Pascale, G. ; Passaleva, G. ; Patricelli, S. ; Paul, T. ; Pauluzzi, M. ; Paus, C. ; Pauss, F. ; Peach, D. ; Pedace, M. ; Pensotti, S. ; Perret-Gallix, D. ; Petersen, B. ; Piccolo, D. ; Pierella, F. ; Pieri, M. ; Piroué, P. A. ; Pistolesi, E. ; Plyaskin, V. ; Pohl, M. ; Pojidaev, V. ; Postema, H. ; Pothier, J. ; Produit, N. ; Prokofiev, D. O. ; Prokofiev, D. ; Quartieri, J. ; Rahal-Callot, G. ; Rahaman, M. A. ; Raics, P. ; Raja, N. ; Ramelli, R. ; Rancoita, P. G. ; Raspereza, A. ; Raven, G. ; Rescigno, M. ; Reucroft, S. ; van Rhee, T. ; Riemann, S. ; Riles, K. ; Robohm, A. ; Rodin, J. ; Roe, B. P. ; Romero, L. ; Rosca, A. ; Rosier-Lees, S. ; Roth, S. ; Rubio, J. A. ; Ruschmeier, D. ; Rykaczewski, H. ; Saremi, S. ; Sarkar, S. ; Salicio, J. ; Sanchez, E. ; Sanders, M. P. ; Sarakinos, M. E. ; Schäfer, C. ; Schegelsky, V. ; Schmidt-Kaerst, S. ; Schmitz, D. ; Schopper, H. ; Schotanus, D. J. ; Schwering, G. ; Sciacca, C. ; Sciarrino, D. ; Seganti, A. ; Servoli, L. ; Shevchenko, S. ; Shivarov, N. ; Shoutko, V. ; Shumilov, E. ; Shvorob, A. ; Siedenburg, T. ; Son, D. ; Smith, B. ; Spillantini, P. ; Steuer, M. ; Stickland, D. P. ; Stone, A. ; Stone, H. ; Stoyanov, B. ; Straessner, A. ; Sudhakar, K. ; Sultanov, G. ; Sun, L. Z. ; Suter, H. ; Swain, J. D. ; Szillási, Z. ; Sztaricskai, T. ; Tang, X. W. ; Tauscher, L. ; Taylor, L. ; Tellili, B. ; Timmermans, C. ; Ting, S. C C ; Ting, S. M. ; Tonwar, S. C. ; Tóth, J. ; Tully, C. ; Tung, K. L. ; Ulbricht, J. ; Uwer, U. ; Valente, E. ; Vesztergombi, G. ; Vetlitsky, I. ; Vicinanza, D. ; Viertel, G. ; Villa, S. ; Vivargent, M. ; Vlachos, S. ; Vodopianov, I. ; Vogel, H. ; Vogt, H. ; Vorobiev, I. ; Vorobyov, A. A. ; Vorvolakos, A. ; Wadhwa, M. ; Wallraff, W. ; Wang, M. ; Wang, X. L. ; Wang, Z. M. ; Weber, A. ; Weber, M. ; Wienemann, P. ; Wilkens, H. ; Wu, S. X. ; Wynhoff, S. ; Xia, L. ; Xu, Z. Z. ; Yang, B. Z. ; Yang, C. G. ; Yang, H. J. ; Yang, M. ; Ye, J. B. ; Yeh, S. C. ; You, J. M. ; Zalite, A. ; Zalite, Y. ; Zhang, Z. P. ; Zhu, G. Y. ; Zhu, R. Y. ; Zichichi, A. ; Zilizi, G. ; Zoller, M. / Measurements of cross sections and forward-backward asymmetries at the Z resonance and determination of electroweak parameters. In: European Physical Journal C. 2000 ; Vol. 16, No. 1. pp. 1-40.
@article{334e8666af4f4114b1a6afcfeafa4b53,
title = "Measurements of cross sections and forward-backward asymmetries at the Z resonance and determination of electroweak parameters",
abstract = "We report on measurements of hadronic and leptonic cross sections and leptonic forward-backward asymmetries performed with the L3 detector in the years 1993-95. A total luminosity of 103 pb -1 was collected at centre-of-mass energies √s ≈ m z and √s ≈ m z±1.8 GeV which corresponds to 2.5 million hadronic and 245 thousand leptonic events selected. These data lead to a significantly improved determination of Z parameters. From the total cross sections, combined with our measurements in 1990-92, we obtain the final results: m z = 91 189.8 ± 3.1 MeV , Γ z = 2 502.4 ± 4.2 MeV , Γ had = 1 751.1 ± 3.8 MeV , Γ ℓ = 84.14 ± 0.17 MeV . An invisible width of Γ inv = 499.1 ± 2.9 MeV is derived which in the Standard Model yields for the number of light neutrino species N v = 2.978 ± 0.014. Adding our results on the leptonic forward-backward asymmetries and the tau polarisation, the effective vector and axial-vector coupling constants of the neutral weak current to charged leptons are determined to be ḡ ℓ V = -0.0397 ± 0.0017 and ḡ ℓ A = -0.50153 ± 0.00053. Including our measurements of the Z → bb̄ forward-backward and quark charge asymmetries a value for the effective electroweak mixing angle of sin 2θ̄ w = 0.23093 ± 0.00066 is derived. All these measurements are in good agreement with the Standard Model of electroweak interactions. Using all our measurements of electroweak observables an upper limit on the mass of the Standard Model Higgs boson of m H <133 GeV is set at 95{\%} confidence level.",
author = "M. Acciarri and P. Achard and O. Adriani and M. Aguilar-Benitez and J. Alcaraz and G. Alemanni and J. Allaby and A. Aloisio and Alviggi, {M. G.} and G. Ambrosi and H. Anderhub and Andreev, {V. P.} and T. Angelescu and F. Anselmo and A. Arefiev and T. Azemoon and T. Aziz and P. Bagnaia and L. Baksay and A. Balandras and Ball, {R. C.} and S. Banerjee and Banerjee, {S. W.} and A. Barczyk and R. Barill{\`e}re and L. Barone and P. Bartalini and M. Basile and R. Battiston and A. Bay and F. Becattini and U. Becker and F. Behner and L. Bellucci and J. Berdugo and P. Berges and B. Bertucci and Betev, {B. L.} and S. Bhattacharya and M. Biasini and A. Biland and Blaising, {J. J.} and Blyth, {S. C.} and Bobbink, {G. J.} and A. B{\"o}hm and L. Boldizs{\'a}r and B. Borgia and D. Bourilkov and M. Bourquin and S. Braccini and Branson, {J. G.} and V. Brigljevic and F. Brochu and Brock, {I. C.} and A. Buffini and A. Buijs and Burger, {J. D.} and Burger, {W. J.} and A. Button and Cai, {X. D.} and M. Campanelli and M. Capell and {Cara Romeo}, G. and G. Carlino and Cartacci, {A. M.} and J. Casaus and G. Castellini and F. Cavallari and N. Cavallo and C. Cecchi and M. Cerrada and F. Cesaroni and M. Chamizo and Chang, {Y. H.} and Chaturvedi, {U. K.} and M. Chemarin and A. Chen and G. Chen and Chen, {G. M.} and Chen, {H. F.} and Chen, {H. S.} and G. Chiefari and L. Cifarelli and F. Cindolo and C. Civinini and I. Clare and R. Clare and G. Coignet and Colijn, {A. P.} and N. Colino and S. Costantini and F. Cotorobai and B. Cozzoni and {de la Cruz}, B. and A. Csilling and S. Cucciarelli and Dai, {T. S.} and {van Dalen}, {J. A.} and R. D'Alessandro and {de Asmundis}, R. and P. D{\'e}glon and A. Degr{\'e} and K. Deiters and {della Volpe}, D. and P. Denes and F. DeNotaristefani and {De Salvo}, A. and M. Diemoz and {van Dierendonck}, D. and {Di Lodovico}, F. and C. Dionisi and M. Dittmar and A. Dominguez and A. Doria and Dova, {M. T.} and D. Duchesneau and D. Dufournaud and P. Duinker and I. Duran and S. Dutta and {El Mamouni}, H. and A. Engler and Eppling, {F. J.} and Ern{\'e}, {F. C.} and P. Extermann and M. Fabre and R. Faccini and Falagan, {M. A.} and S. Falciano and A. Favara and J. Fay and O. Fedin and M. Felcini and T. Ferguson and F. Ferroni and H. Fesefeldt and E. Fiandrini and Field, {J. H.} and F. Filthaut and Fisher, {P. H.} and I. Fisk and G. Forconi and L. Fredj and K. Freudenreich and C. Furetta and Y. Galaktionov and Ganguli, {S. N.} and P. Garcia-Abia and M. Gataullin and Gau, {S. S.} and S. Gentile and N. Gheordanescu and S. Giagu and Gong, {Z. F.} and G. Grenier and O. Grimm and Gruenewald, {M. W.} and M. Guida and {van Gulik}, R. and Gupta, {V. K.} and A. Gurtu and Gutay, {L. J.} and D. Haas and A. Hasan and D. Hatzifotiadou and T. Hebbeker and A. Herv{\'e} and P. Hidas and J. Hirschfelder and H. Hofer and G. Holzner and H. Hoorani and Hou, {S. R.} and I. Iashvili and V. Innocente and Jin, {B. N.} and Jones, {L. W.} and {de Jong}, P. and I. Josa-Mutuberr{\'i}a and Khan, {R. A.} and M. Kaur and Kienzle-Focacci, {M. N.} and D. Kim and Kim, {J. K.} and J. Kirkby and D. Kiss and W. Kittel and A. Klimentov and K{\"o}nig, {A. C.} and E. Koffeman and A. Kopp and V. Koutsenko and M. Kr{\"a}ber and Kraemer, {R. W.} and W. Krenz and A. Kr{\"u}ger and H. Kuijten and A. Kunin and {Ladron de Guevara}, P. and I. Laktineh and G. Landi and K. Lassila-Perini and M. Lebeau and A. Lebedev and P. Lebrun and P. Lecomte and P. Lecoq and {Le Coultre}, P. and Lee, {H. J.} and {Le Goff}, {J. M.} and R. Leiste and E. Leonardi and P. Levtchenko and C. Li and S. Likhoded and Lin, {C. H.} and Lin, {W. T.} and Linde, {F. L.} and L. Lista and Liu, {Z. A.} and W. Lohmann and E. Longo and Lu, {Y. S.} and W. Lu and K. L{\"u}belsmeyer and C. Luci and D. Luckey and L. Lugnier and L. Luminari and W. Lustermann and Ma, {W. G.} and M. Maity and L. Malgeri and A. Malinin and C. Ma{\~n}a and D. Mangeol and P. Marchesini and G. Marian and Martin, {J. P.} and F. Marzano and Massaro, {G. G G} and K. Mazumdar and McNeil, {R. R.} and S. Mele and L. Merola and M. Merk and M. Meschini and Metzger, {W. J.} and {von der Mey}, M. and A. Mihul and H. Milcent and G. Mirabelli and J. Mnich and Mohanty, {G. B.} and P. Molnar and B. Monteleoni and T. Moulik and Muanza, {G. S.} and F. Muheim and Muijs, {A. J M} and M. Musy and M. Napolitano and F. Nessi-Tedaldi and H. Newman and T. Niessen and A. Nisati and H. Nowak and G. Organtini and A. Oulianov and C. Palomares and D. Pandoulas and S. Paoletti and A. Paoloni and P. Paolucci and R. Paramatti and Park, {H. K.} and Park, {I. H.} and G. Pascale and G. Passaleva and S. Patricelli and T. Paul and M. Pauluzzi and C. Paus and F. Pauss and D. Peach and M. Pedace and S. Pensotti and D. Perret-Gallix and B. Petersen and D. Piccolo and F. Pierella and M. Pieri and Pirou{\'e}, {P. A.} and E. Pistolesi and V. Plyaskin and M. Pohl and V. Pojidaev and H. Postema and J. Pothier and N. Produit and Prokofiev, {D. O.} and D. Prokofiev and J. Quartieri and G. Rahal-Callot and Rahaman, {M. A.} and P. Raics and N. Raja and R. Ramelli and Rancoita, {P. G.} and A. Raspereza and G. Raven and M. Rescigno and S. Reucroft and {van Rhee}, T. and S. Riemann and K. Riles and A. Robohm and J. Rodin and Roe, {B. P.} and L. Romero and A. Rosca and S. Rosier-Lees and S. Roth and Rubio, {J. A.} and D. Ruschmeier and H. Rykaczewski and S. Saremi and S. Sarkar and J. Salicio and E. Sanchez and Sanders, {M. P.} and Sarakinos, {M. E.} and C. Sch{\"a}fer and V. Schegelsky and S. Schmidt-Kaerst and D. Schmitz and H. Schopper and Schotanus, {D. J.} and G. Schwering and C. Sciacca and D. Sciarrino and A. Seganti and L. Servoli and S. Shevchenko and N. Shivarov and V. Shoutko and E. Shumilov and A. Shvorob and T. Siedenburg and D. Son and B. Smith and P. Spillantini and M. Steuer and Stickland, {D. P.} and A. Stone and H. Stone and B. Stoyanov and A. Straessner and K. Sudhakar and G. Sultanov and Sun, {L. Z.} and H. Suter and Swain, {J. D.} and Z. Szill{\'a}si and T. Sztaricskai and Tang, {X. W.} and L. Tauscher and L. Taylor and B. Tellili and C. Timmermans and Ting, {S. C C} and Ting, {S. M.} and Tonwar, {S. C.} and J. T{\'o}th and C. Tully and Tung, {K. L.} and J. Ulbricht and U. Uwer and E. Valente and G. Vesztergombi and I. Vetlitsky and D. Vicinanza and G. Viertel and S. Villa and M. Vivargent and S. Vlachos and I. Vodopianov and H. Vogel and H. Vogt and I. Vorobiev and Vorobyov, {A. A.} and A. Vorvolakos and M. Wadhwa and W. Wallraff and M. Wang and Wang, {X. L.} and Wang, {Z. M.} and A. Weber and M. Weber and P. Wienemann and H. Wilkens and Wu, {S. X.} and S. Wynhoff and L. Xia and Xu, {Z. Z.} and Yang, {B. Z.} and Yang, {C. G.} and Yang, {H. J.} and M. Yang and Ye, {J. B.} and Yeh, {S. C.} and You, {J. M.} and A. Zalite and Y. Zalite and Zhang, {Z. P.} and Zhu, {G. Y.} and Zhu, {R. Y.} and A. Zichichi and G. Zilizi and M. Zoller",
year = "2000",
language = "English",
volume = "16",
pages = "1--40",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer New York",
number = "1",

}

TY - JOUR

T1 - Measurements of cross sections and forward-backward asymmetries at the Z resonance and determination of electroweak parameters

AU - Acciarri, M.

AU - Achard, P.

AU - Adriani, O.

AU - Aguilar-Benitez, M.

AU - Alcaraz, J.

AU - Alemanni, G.

AU - Allaby, J.

AU - Aloisio, A.

AU - Alviggi, M. G.

AU - Ambrosi, G.

AU - Anderhub, H.

AU - Andreev, V. P.

AU - Angelescu, T.

AU - Anselmo, F.

AU - Arefiev, A.

AU - Azemoon, T.

AU - Aziz, T.

AU - Bagnaia, P.

AU - Baksay, L.

AU - Balandras, A.

AU - Ball, R. C.

AU - Banerjee, S.

AU - Banerjee, S. W.

AU - Barczyk, A.

AU - Barillère, R.

AU - Barone, L.

AU - Bartalini, P.

AU - Basile, M.

AU - Battiston, R.

AU - Bay, A.

AU - Becattini, F.

AU - Becker, U.

AU - Behner, F.

AU - Bellucci, L.

AU - Berdugo, J.

AU - Berges, P.

AU - Bertucci, B.

AU - Betev, B. L.

AU - Bhattacharya, S.

AU - Biasini, M.

AU - Biland, A.

AU - Blaising, J. J.

AU - Blyth, S. C.

AU - Bobbink, G. J.

AU - Böhm, A.

AU - Boldizsár, L.

AU - Borgia, B.

AU - Bourilkov, D.

AU - Bourquin, M.

AU - Braccini, S.

AU - Branson, J. G.

AU - Brigljevic, V.

AU - Brochu, F.

AU - Brock, I. C.

AU - Buffini, A.

AU - Buijs, A.

AU - Burger, J. D.

AU - Burger, W. J.

AU - Button, A.

AU - Cai, X. D.

AU - Campanelli, M.

AU - Capell, M.

AU - Cara Romeo, G.

AU - Carlino, G.

AU - Cartacci, A. M.

AU - Casaus, J.

AU - Castellini, G.

AU - Cavallari, F.

AU - Cavallo, N.

AU - Cecchi, C.

AU - Cerrada, M.

AU - Cesaroni, F.

AU - Chamizo, M.

AU - Chang, Y. H.

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PY - 2000

Y1 - 2000

N2 - We report on measurements of hadronic and leptonic cross sections and leptonic forward-backward asymmetries performed with the L3 detector in the years 1993-95. A total luminosity of 103 pb -1 was collected at centre-of-mass energies √s ≈ m z and √s ≈ m z±1.8 GeV which corresponds to 2.5 million hadronic and 245 thousand leptonic events selected. These data lead to a significantly improved determination of Z parameters. From the total cross sections, combined with our measurements in 1990-92, we obtain the final results: m z = 91 189.8 ± 3.1 MeV , Γ z = 2 502.4 ± 4.2 MeV , Γ had = 1 751.1 ± 3.8 MeV , Γ ℓ = 84.14 ± 0.17 MeV . An invisible width of Γ inv = 499.1 ± 2.9 MeV is derived which in the Standard Model yields for the number of light neutrino species N v = 2.978 ± 0.014. Adding our results on the leptonic forward-backward asymmetries and the tau polarisation, the effective vector and axial-vector coupling constants of the neutral weak current to charged leptons are determined to be ḡ ℓ V = -0.0397 ± 0.0017 and ḡ ℓ A = -0.50153 ± 0.00053. Including our measurements of the Z → bb̄ forward-backward and quark charge asymmetries a value for the effective electroweak mixing angle of sin 2θ̄ w = 0.23093 ± 0.00066 is derived. All these measurements are in good agreement with the Standard Model of electroweak interactions. Using all our measurements of electroweak observables an upper limit on the mass of the Standard Model Higgs boson of m H <133 GeV is set at 95% confidence level.

AB - We report on measurements of hadronic and leptonic cross sections and leptonic forward-backward asymmetries performed with the L3 detector in the years 1993-95. A total luminosity of 103 pb -1 was collected at centre-of-mass energies √s ≈ m z and √s ≈ m z±1.8 GeV which corresponds to 2.5 million hadronic and 245 thousand leptonic events selected. These data lead to a significantly improved determination of Z parameters. From the total cross sections, combined with our measurements in 1990-92, we obtain the final results: m z = 91 189.8 ± 3.1 MeV , Γ z = 2 502.4 ± 4.2 MeV , Γ had = 1 751.1 ± 3.8 MeV , Γ ℓ = 84.14 ± 0.17 MeV . An invisible width of Γ inv = 499.1 ± 2.9 MeV is derived which in the Standard Model yields for the number of light neutrino species N v = 2.978 ± 0.014. Adding our results on the leptonic forward-backward asymmetries and the tau polarisation, the effective vector and axial-vector coupling constants of the neutral weak current to charged leptons are determined to be ḡ ℓ V = -0.0397 ± 0.0017 and ḡ ℓ A = -0.50153 ± 0.00053. Including our measurements of the Z → bb̄ forward-backward and quark charge asymmetries a value for the effective electroweak mixing angle of sin 2θ̄ w = 0.23093 ± 0.00066 is derived. All these measurements are in good agreement with the Standard Model of electroweak interactions. Using all our measurements of electroweak observables an upper limit on the mass of the Standard Model Higgs boson of m H <133 GeV is set at 95% confidence level.

UR - http://www.scopus.com/inward/record.url?scp=0002184441&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0002184441&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0002184441

VL - 16

SP - 1

EP - 40

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 1

ER -