The mass of the W boson is obtained from reconstructed invariant mass distributions in W-pair events. The sample of W pairs is selected from 57 pb(-1) collected with the ALEPH detector in 1997 at a centre-of-mass energy of 183 GeV. The invariant mass distributions of reweighted Monte Carlo events are fitted separately to the experimental distributions in the q (q) over bar q (q) over bar and all l nu q (q) over bar channels to give the following W masses: m(W)(hadronic) = 80.461 +/- 0.177 (stat.) +/- 0.045 (syst.) +/- 0.056 (theory) GeV/c(2) m(W)(semileptonic) = 80.326 +/- 0.184 (stat.) +/- 0.040 (syst.) GeV/c(2) where the theory error represents the possible effects of final state interactions. The combination of these two measurements, including the LEP energy calibration uncertainty, gives m(W) = 80.393 +/- 0.128 (stat.) +/- 0.041 (syst.) +/- 0.028 (theory) +/- 0.021 (LEP) GeV/c(2).

Measurement of the W mass in e(+)e(-) collisions at 183 GeV / R. Barate, D. Decamp, P. Ghez, C. Goy, S. Jezequel, J. Lees, F. Martin, E. Merle, M. Minard, B. Pietrzyk, R. Alemany, M. Casado, M. Chmeissani, J. Crespo, E. Fernandez, M. Fernandez-Bosman, L. Garrido, E. Grauges, A. Juste, M. Martinez, G. Merino, R. Miquel, L. Mir, P. Morawitz, A. Pacheco, I. Park, I. Riu, A. Colaleo, D. Creanza, M. de Palma, G. Gelao, G. Iaselli, G. Maggi, M. Maggi, 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, D. Abbaneo, U. Becker, G. Boix, M. Cattaneo, V. Ciulli, G. Dissertori, H. Drevermann, R. Forty, M. Frank, F. Gianotti, A. Halley, J. Hansen, J. Harvey, P. Janot, B. Jost, I. Lehraus, O. Leroy, C. Loomis, P. Maley, P. Mato, A. Minten, A. Moutoussi, F. Ranjard, L. Rolandi, D. Rousseau, D. Schlatter, M. Schmitt, O. Schneider, W. Tejessy, F. Teubert, I. Tomalin, E. Tournefier, M. Vreeswijk, A. Wright, Z. Ajaltouni, F. Badaud, G. Chazelle, O. Deschamps, S. Dessagne, A. Falvard, C. Ferdi, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. Montret, D. Pallin, P. Perret, F. Podlyski, J. Hansen, J. Hansen, P. Hansen, B. Nilsson, B. Rensch, A. Waananen, G. Daskalakis, A. Kyriakis, C. Markou, E. Simopoulou, A. Vayaki, A. Blondel, J. Brient, F. Machefert, A. Rouge, M. Swynghedauw, R. Tanaka, A. Valassi, H. Videau, E. Focardi, G. Parrini, K. Zachariadou, R. Cavanaugh, M. Corden, C. Georgiopoulos, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, F. Cerutti, V. Chiarella, P. Laurelli, G. Mannocchi, F. Murtas, G. Murtas, L. Passalacqua, M. Pepe-Altarelli, M. Chalmers, L. Curtis, J. Lynch, P. Negus, V. O'Shea, B. Raeven, C. Raine, D. Smith, P. Teixeira-Dias, A. Thompson, J. Ward, O. Buchmuller, S. Dhamotharan, C. Geweniger, P. Hanke, G. Hansper, V. Hepp, E. Kluge, A. Putzer, J. Sommer, K. Tittel, S. Werner, M. Wunsch, R. Beuselinck, D. Binnie, W. Cameron, P. Dornan, M. Girone, S. Goodsir, N. Marinelli, E. Martin, J. Nash, J. Nowell, J. Sedgbeer, P. Spagnolo, E. Thomson, M. Williams, V. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, A. Betteridge, C. Bowdery, P. Buck, P. Colrain, G. Crawford, G. Ellis, A. Finch, F. Foster, G. Hughes, R. Jones, N. Robertson, M. Williams, P. van Gemmeren, I. Giehl, F. Holldorfer, C. Hoffmann, K. Jakobs, K. Kleinknecht, M. Krocker, H. Nurnberger, G. Quast, B. Renk, E. Rohne, H. Sander, S. Schmeling, H. Wachsmuth, C. Zeitnitz, T. Ziegler, J. Aubert, C. Benchouk, A. Bonissent, J. Carr, P. Coyle, A. Ealet, D. Fouchez, F. Motsch, P. Payre, M. Talby, M. Thulasidas, A. Tilquin, M.R.A. Aleppo, M. Antonelli, F. Ragusa, R. Berlich, V. Buscher, H. Dietl, G. Ganis, K. Huttmann, G. Lutjens, C. Mannert, W. Manner, H. Moser, S. Schael, R. Settles, H. Seywerd, H. Stenzel, W. Wiedenmann, G. Wolf, P. Azzurri, J. Boucrot, O. Callot, S. Chen, M. Davier, L. Duflot, J. Grivaz, P. Heusse, A. Jacholkowska, M. Kado, J. Lefrancois, L. Serin, J. Veillet, I. Videau, J. de Regie, D. Zerwas, G. Bagliesi, S. Bettarini, T. Boccali, C. Bozzi, G. Calderini, R. Dell'Orso, I. Ferrante, A. Giassi, A. Gregorio, F. Ligabue, A. Lusiani, P. Marrocchesi, A. Messineo, F. Palla, G. Rizzo, G. Sanguinetti, A. Sciaba, G. Sguazzoni, R. Tenchini, C. Vannini, A. Venturi, P. Verdini, G. Blair, J. Coles, G. Gowan, M. Green, D. Hutchcroft, L. Jones, T. Medcalf, J. Strong, J. von Wimmersperg-Toeller, D. Botterill, R. Clifft, T. Edgecock, P. Norton, J. Thompson, B. Bloch-Devaux, P. Colas, B. Fabbro, G. Faif, E. Lancon, M. Lemaire, E. Locci, P. Perez, H. Przysiezniak, J. Rander, J. Renardy, A. Rosowsky, A. Trabelsi, B. Tuchming, B. Vallage, S. Black, J. Dann, H. Kim, N. Konstantinidis, A. Litke, M. McNeil, G. Taylor, C. Booth, S. Cartwright, F. Combley, P. Hodgson, M. Kelly, M. Lehto, L. Thompson, K. Afholderbach, A. Bohrer, S. Brandt, C. Grupen, A. Misiejuk, G. Prange, U. Sieler, G. Giannini, B. Gobbo, J. Putz, J. Rothberg, S. Wasserbaech, R. Williams, S. Armstrong, E. Charles, P. Elmer, D. Ferguson, Y. Gao, S. Gonzalez, T. Greening, O. Hayes, H. Hu, S. Jin, P. McNamara, J. Nachtman, J. Nielsen, W. Orejudos, Y. Pan, Y. Saadi, I. Scott, J. Walsh, S. Wu, X. Wu, G. Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 453:1/2(1999), pp. 121-137.

Measurement of the W mass in e(+)e(-) collisions at 183 GeV

M.R.A. Aleppo;F. Ragusa;
1999

Abstract

The mass of the W boson is obtained from reconstructed invariant mass distributions in W-pair events. The sample of W pairs is selected from 57 pb(-1) collected with the ALEPH detector in 1997 at a centre-of-mass energy of 183 GeV. The invariant mass distributions of reweighted Monte Carlo events are fitted separately to the experimental distributions in the q (q) over bar q (q) over bar and all l nu q (q) over bar channels to give the following W masses: m(W)(hadronic) = 80.461 +/- 0.177 (stat.) +/- 0.045 (syst.) +/- 0.056 (theory) GeV/c(2) m(W)(semileptonic) = 80.326 +/- 0.184 (stat.) +/- 0.040 (syst.) GeV/c(2) where the theory error represents the possible effects of final state interactions. The combination of these two measurements, including the LEP energy calibration uncertainty, gives m(W) = 80.393 +/- 0.128 (stat.) +/- 0.041 (syst.) +/- 0.028 (theory) +/- 0.021 (LEP) GeV/c(2).
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
1999
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/178016
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