1. Measurement of the W mass by direct reconstruction in e+e- collisions at 172 GeV
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Jordan Nash, Claus Grupen, S. Gonzalez, K. Tittel, Konrad Kleinknecht, Jie Zhang, G. Hansper, M. C. Lemaire, H. Videau, L. Moneta, Mossadek Talby, H. Hu, P. A. McNamara, S. Schael, M. De Palma, G. Felici, J. A. Perlas, D. E. Jaffe, V. Chiarella, F. Gianotti, M.D. Williams, B. Pietrzyk, W. Tejessy, Pablo Rodriguez Perez, A. Ranieri, H. Dietl, John H. L. Hansen, J.M. Yamartino, M. A. McNeil, H. Drevermann, Alain Bonissent, S. L. Cartwright, M. Pepe-Altarelli, I. Videau, R. W. Clifft, A. Blondel, S. Wasserbaech, C. Benchouk, G. Maggi, Dirk Zerwas, S. Werner, Ian R Tomalin, J. Putz, Q. Ouyang, G. Bencivenni, I. Ferrante, J. J. Veillet, A. Trabelsi, O. Buchmüller, Manuel Delfino, R. Hagelberg, Salvatore Nuzzo, G. Bujosa, G. Giannini, M. I. Williams, G. Faïf, Piero Giorgio Verdini, A. Rougé, F. Le Diberder, R. Barate, Roger Forty, J.G. Lynch, E. P. Whelan, Jiali Lin, C. Gotzhein, U. Becker, E. Charles, B. Michel, T. R. Edgecock, H. G. Sander, V. M. Ghete, G.P. Murtas, Kevin M. Smith, F. Stephan, A. Roussarie, N. Konstantinidis, P. Colrain, G. Hughes, Lei Zhang, Lucia Silvestris, A. W. Halley, P. S. Marrocchesi, Olivier Deschamps, F. Motsch, O. Callot, P. Ghez, T. Boccali, Werner Wiedenmann, G.A. Blair, B. Renk, Paolo Azzurri, F. Combley, Stephen Haywood, Y. S. Gao, Günther Dissertori, Roberto Dell'Orso, J. C. Brient, Andre Tilquin, A. P. Betteridge, Giuseppe Zito, C. Vannini, Giuseppe Iaselli, D. M. Binnie, Ettore Focardi, Ph Heusse, Arnaud Lucotte, A. Gregorio, André Rosowsky, T. Fearnley, Val O'Shea, W. Blum, J. Nielsen, Fabrizio Palla, A. Wäänänen, D. Schlatter, John Rander, L. Passalacqua, J.J. Ward, Dominique Pallin, P. Teixeira-Dias, P. Henrard, Gy. Wolf, M. Thulasidas, C. Raine, Karl Jakobs, I. Giehl, B. Fabbro, B. Vallage, Ziad Ajaltouni, S. Goodsir, K. Affholderbach, Hasko Stenzel, S. Dhamotharan, M. Apollonio, Francesco Ragusa, Peter Elmer, Jean-Francois Grivaz, G. A. Cowan, G. Parrini, P. Spagnolo, V. Büscher, Yuehong Xie, S.N. Black, J-C. Montret, J. Steinberger, R. Xu, P. Coyle, G. Chazelle, J. J. Aubert, Alessia Tricomi, Ll. M. Mir, F. Bossi, A. Putzer, Mario Antonelli, S. Monteil, H.Y. Kim, P. J. Dornan, Franco Ligabue, P. Perrodo, Giuseppe Bagliesi, Robert Richter, R. Della Marina, J. Carr, D.P.S. Ferguson, P. Mato, J.T. Chambers, J. D. Hansen, J. C. Thompson, Georg Zobernig, P. Colas, B. Gobbo, Christian Zeitnitz, J. Boucrot, F. Podlyski, D. Buskulic, A. Vayaki, B.S. Nilsson, Eb Martin, Marco Cattaneo, J. K. Sedgbeer, P. Payre, M. Martinez, Ramon Miquel, A. S. Thompson, E. Fernandez, Giacomo Sguazzoni, G. Sanguinetti, M.-N. Minard, S. Xue, G. Lutz, P. R. Norton, Alberto Lusiani, T. Medcalf, Eric Lancon, A. Sciabà, E. Tournefier, M. G. Green, Duccio Abbaneo, Aristotelis Kyriakis, Patrick Janot, P. Maley, P.G. Bright-Thomas, B. Bloch-Devaux, Ting Wang, J. F. Renardy, J. Coles, T. Huehn, G. Lütjens, Imma Riu, Elizabeth Locci, J. Sommer, D. Decamp, C. Markou, P. Perret, H. Przysiezniak, C. Hoffmann, R. Berlich, S. Brandt, O.J. Hayes, K. Zachariadou, A. Valassi, M. Davier, R. Settles, T.C. Greening, M. Rumpf, Hubert Kroha, B. Jost, Pierluigi Campana, S. Chen, W. Männer, C. Goy, S. J. Dorris, J. A. Strong, Alberto Messineo, G. Calderini, J. F. Pusztaszeri, Evelyn Thomson, M. Chmeissani, E. Simopoulou, F. Cerutti, P. Girtler, Vitaliano Ciulli, David Rousseau, J. Foss, Georgios Daskalakis, Laurent Serin, F. Murtas, Sau Lan Wu, P. van Gemmeren, John-Bjarne Hansen, Christopher Brew, Jane Nachtman, Laurent Duflot, Lester D.R. Thompson, C. Geweniger, M H. Lehto, L. M. Bryant, C. Guicheney, J. Reeve, I.J. Scott, A. Pascual, A. Wagner, J. M. Crespo, S. Bettarini, C. Ferdi, Y. B. Pan, Philippe Rosnet, F. Ruggieri, E. Rohne, H. Seywerd, Peter Hansen, C. Mannert, Olivier Leroy, R.W. Williams, G. Musolino, E. E. Kluge, D. Kuhn, M. Girone, V. Hepp, Anna Colaleo, Ll. Garrido, Joseph Rothberg, C. Bozzi, F. Thomson, R. W. L. Jones, B. Rensch, G. Graefe, Alain Falvard, A. Höcker, X. Huang, Paolo Laurelli, R. Cavanaugh, M. Aleppo, D. Fouchez, J. P. Lees, A. Rosado-Schlosser, Alan Litke, Mario Maggi, R. Beuselinck, A. Böhrer, G. Merino, Donato Creanza, P. Morawitz, John T Harvey, R. Fantechi, Alessandro Giassi, Giuseppe Raso, G. Rudolph, G. Rizzo, Nancy Marinelli, K. Trabelsi, Maria Pilar Casado, C. K. Bowdery, Andrea Venturi, M. H. Schune, P. Negus, I. Lehraus, Markus Frank, M. Corden, D. W. Kim, F. Ranjard, Emmerich Kneringer, A. Antonelli, A. Moutoussi, F. Teubert, J. Lefrançois, F. Sanchez, A.E. Wright, W. Zhao, L. Curtis, M. Fernandez-Bosman, A. Sadouki, F. Badaud, R. Alemany, Marcel Vreeswijk, Marumi Kado, L. Rolandi, Joseph Proriol, G. Capon, J.Y. Nief, G. Mannocchi, A. Juste, Gunter Quast, Xin Wu, D. R. Botterill, Giovanna Selvaggi, S.R. Armstrong, Y. Saadi, O. Schneider, M. Wunsch, F. Foster, M.S. Kelly, Stephane Jezequel, D. Casper, A. Pacheco, L. Smolik, L. Bosisio, Roberto Tenchini, J. H. von Wimmersperg-Toeller, C. Georgiopoulos, J. M. Scarr, E. Grauges, G. Boix, F. Machefert, J. J. Walsh, G. Gelao, W. Cameron, Alexander Finch, S. Jin, A. Minten, Inkyu Park, G. Crawford, H. G. Moser, Gerardo Ganis, P.G. Buck, G. Bologna, G. B. Taylor, P. Tempesta, H. Wachsmuth, W. Orejudos, A. Ealet, Paul Hanke, A. Jacholkowska, C. N. Booth, J. Jousset, Michael Schmitt, A. M. Lutz, J.H. Dann, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), ALEPH, Barate, R, Buskulic, D, Decamp, D, Ghez, P, Goy, C, Jezequel, S, Lees, Jp, Lucotte, A, Minard, Mn, Nief, Jy, Pietrzyk, B, Boix, G, Casado, Mp, Chmeissani, M, Crespo, Jm, Delfino, M, Fernandez, E, Fernandez Bosman, M, Garrido, L, Grauges, E, Juste, A, Martinez, M, Merino, G, Miquel, R, Mir, Lm, Morawitz, P, Park, Ic, Pascual, A, Perlas, Ja, Riu, I, Sanchez, F, Colaleo, A, Creanza, D, de Palma, M, Gelao, G, 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, Alemany, R, Becker, U, Bright Thomas, P, Casper, D, Cattaneo, M, Cerutti, F, Ciulli, V, Dissertori, G, Drevermann, H, Forty, Rw, Frank, M, Gianotti, F, Hagelberg, R, Hansen, Jb, Harvey, J, Janot, P, Jost, B, Lehraus, I, Mato, P, Minten, A, Moneta, L, Pacheco, A, Pusztaszeri, Jf, Ranjard, F, Rolandi, Luigi, Rousseau, D, Schlatter, D, Schmitt, M, Schneider, O, Tejessy, W, Teubert, F, Tomalin, Ir, Vreeswijk, M, Wachsmuth, H, Wagner, A, Ajaltouni, Z, Badaud, F, Chazelle, G, Deschamps, O, Falvard, A, Ferdi, C, Gay, P, Guicheney, C, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, Jc, Pallin, D, Perret, P, Podlyski, F, Proriol, J, Rosnet, P, Fearnley, T, Hansen, Jd, Hansen, Jr, Hansen, Ph, Nilsson, B, Rensch, B, Waananen, A, Daskalakis, G, Kyriakis, A, Markou, C, Simopoulou, E, Vayaki, A, Blondel, A, Brient, Jc, Machefert, F, Rouge, A, Rumpf, M, Valassi, A, Videau, H, Boccali, T, Focardi, E, Parrini, G, Zachariadou, K, Cavanaugh, R, Corden, M, Georgiopoulos, C, Huehn, T, Jaffe, De, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Chiarella, V, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, Gp, Passalacqua, L, Pepe Altarelli, M, Curtis, L, Dorris, Sj, Halley, Aw, Lynch, Jg, Negus, P, O'Shea, V, Raine, C, Scarr, Jm, Smith, K, Teixeira Dias, P, Thompson, A, Ward, Jj, Buchmuller, O, Dhamotharan, S, Geweniger, C, Graefe, G, Hanke, P, Hansper, G, Hepp, V, Kluge, Ee, Putzer, A, Sommer, J, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, Dm, Cameron, W, Dornan, Pj, Girone, M, Goodsir, S, Martin, Eb, Marinelli, N, Moutoussi, A, Nash, J, Sedgbeer, Jk, Spagnolo, P, Williams, Md, Ghete, Vm, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Betteridge, Ap, Bowdery, Ck, Buck, Pg, Colrain, P, Crawford, G, Finch, Aj, Foster, F, Hughes, G, Jones, Rwl, Whelan, Ep, Williams, Mi, Giehl, I, Hoffmann, C, Jakobs, K, Kleinknecht, K, Quast, G, Renk, B, Rohne, E, Sander, Hg, van Gemmeren, P, Zeitnitz, C, Aubert, Jj, Benchouk, C, Bonissent, A, Bujosa, G, Carr, J, Coyle, P, Ealet, A, Fouchez, D, Leroy, O, Motsch, F, Payre, P, Talby, M, Sadouki, A, Thulasidas, M, Tilquin, A, Trabelsi, K, Aleppo, M, Antonelli, M, Ragusa, F, Berlich, R, Blum, W, Buscher, V, Dietl, H, Ganis, G, Gotzhein, C, Kroha, H, Lutjens, G, Lutz, G, Mannert, C, Manner, W, Moser, Hg, Richter, R, Rosado Schlosser, A, Schael, S, Settles, R, Seywerd, H, Stenzel, H, Wiedenmann, W, Wolf, G, Boucrot, J, Callot, O, Chen, S, Davier, M, Duflot, L, Grivaz, Jf, Heusse, P, Hocker, A, Jacholkowska, A, Kado, Mm, Kim, Dw, Le Diberder, F, Lefrancois, J, Lutz, Am, Schune, Mh, Serin, L, Tournefier, E, Veillet, Jj, Videau, I, Zerwas, D, Azzurri, P, Bagliesi, G, Bettarini, S, Bozzi, C, Calderini, G, Dell'Orso, R, Fantechi, R, Ferrante, I, Giassi, A, Gregorio, A, Ligabue, Franco, Lusiani, Alberto, Marrocchesi, P, Messineo, A, Palla, F, Rizzo, G, Sanguinetti, G, Sciaba, A, Sguazzoni, G, Steinberger, J, Tenchini, R, Vannini, C, Venturi, A, Verdini, Pg, Blair, Ga, Bryant, Lm, Chambers, Jt, Coles, J, Green, Mg, Medcalf, T, Perrodo, P, Strong, Ja, von Wimmersperg Toeller, Jh, Botterill, Dr, Clifft, Rw, Edgecock, Tr, Haywood, S, Maley, P, Norton, Pr, Thompson, Jc, Wright, Ae, Bloch Devaux, B, Colas, P, Fabbro, B, Faif, G, Lancon, E, Lemaire, Mc, Locci, E, Perez, P, Przysiezniak, H, Rander, J, Renardy, Jf, Rosowsky, A, Roussarie, A, Trabelsi, A, Vallage, B, Black, Sn, Dann, Jh, Kim, Hy, Konstantinidis, N, Litke, Am, Mcneil, Ma, Taylor, G, Booth, Cn, Brew, Caj, Cartwright, S, Combley, F, Kelly, M, Lehto, M, Reeve, J, Thompson, Lf, Affholderbach, K, Bohrer, A, Brandt, S, Cowan, G, Foss, J, Grupen, C, Smolik, L, Stephan, F, Apollonio, M, Bosisio, L, Della Marina, R, Giannini, G, Gobbo, B, Musolino, G, Putz, J, Rothberg, J, Wasserbaech, S, Williams, Rw, Armstrong, Sr, Charles, E, Elmer, P, Ferguson, Dp, Gao, Y, Gonzalez, S, Greening, Tc, Hayes, Oj, Hu, H, Jin, S, Mcnamara, Pa, Nachtman, Jm, Nielsen, J, Orejudos, W, Pan, Yb, Saadi, Y, Scott, Ij, Walsh, J, Wu, Sl, Wu, X, Yamartino, Jm, Zobernig, G., Kerec, Hélène, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), R., Barate, D., Buskulic, D., Decamp, P., Ghez, C., Goy, S., Jezequel, J. P., Lee, A., Lucotte, M. N., Minard, J. Y., Nief, B., Pietrzyk, G., Boix, M. P., Casado, M., Chmeissani, J. M., Crespo, M., Delfino, E., Fernandez, M., Fernandez Bosman, Garrido, L. l., E., Graugè, A., Juste, M., Martinez, G., Merino, R., Miquel, Mir, L. l. M., P., Morawitz, I. C., Park, A., Pascual, J. A., Perla, I., Riu, F., Sanchez, 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., Silvestri, 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, R., Alemany, U., Becker, P., Bright Thoma, D., Casper, M., Cattaneo, F., Cerutti, V., Ciulli, G., Dissertori, H., Drevermann, R. W., Forty, M., Frank, F., Gianotti, R., Hagelberg, J. B., Hansen, J., Harvey, P., Janot, B., Jost, I., Lehrau, P., Mato, A., Minten, L., Moneta, A., Pacheco, J. F., Pusztaszeri, F., Ranjard, L., Rolandi, D., Rousseau, D., Schlatter, M., Schmitt, O., Schneider, W., Tejessy, F., Teubert, I. R., Tomalin, M., Vreeswijk, H., Wachsmuth, A., Wagner, Z., Ajaltouni, F., Badaud, G., Chazelle, O., Deschamp, A., Falvard, C., Ferdi, P., Gay, C., Guicheney, P., Henrard, J., Jousset, B., Michel, S., Monteil, J. C., Montret, D., Pallin, P., Perret, F., Podlyski, J., Proriol, P., Rosnet, T., Fearnley, J. D., Hansen, J. R., Hansen, P. H., Hansen, B. S., Nilsson, B., Rensch, A., Wäänänen, G., Daskalaki, A., Kyriaki, C., Markou, E., Simopoulou, A., Vayaki, A., Blondel, J. C., Brient, F., Machefert, A., Rougé, M., Rumpf, A., Valassi, H., Videau, T., Boccali, E., Focardi, G., Parrini, K., Zachariadou, R., Cavanaugh, M., Corden, C., Georgiopoulo, T., Huehn, D. E., Jaffe, A., Antonelli, G., Bencivenni, G., Bologna, F., Bossi, P., Campana, G., Capon, V., Chiarella, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, L., Passalacqua, M., Pepe Altarelli, L., Curti, S. J., Dorri, A. W., Halley, J. G., Lynch, P., Negu, V., O'Shea, C., Raine, J. M., Scarr, K., Smith, P., Teixeira Dia, A. S., Thompson, E., Thomson, F., Thomson, J. J., Ward, O., Buchmüller, S., Dhamotharan, C., Geweniger, G., Graefe, P., Hanke, G., Hansper, V., Hepp, E. E., Kluge, A., Putzer, J., Sommer, K., Tittel, S., Werner, M., Wunsch, R., Beuselinck, D. M., Binnie, W., Cameron, P. J., Dornan, M., Girone, S., Goodsir, E. B., Martin, N., Marinelli, A., Moutoussi, J., Nash, J. K., Sedgbeer, P., Spagnolo, M. D., William, V. M., Ghete, P., Girtler, E., Kneringer, D., Kuhn, G., Rudolph, A. P., Betteridge, C. K., Bowdery, P. G., Buck, P., Colrain, G., Crawford, A. J., Finch, F., Foster, G., Hughe, R. W. L., Jone, E. P., Whelan, M. I., William, I., Giehl, C., Hoffmann, K., Jakob, K., Kleinknecht, G., Quast, B., Renk, E., Rohne, H. G., Sander, P., van Gemmeren, C., Zeitnitz, J. J., Aubert, C., Benchouk, A., Bonissent, G., Bujosa, J., Carr, P., Coyle, A., Ealet, D., Fouchez, O., Leroy, F., Motsch, P., Payre, M., Talby, A., Sadouki, M., Thulasida, A., Tilquin, K., Trabelsi, M., Aleppo, M., Antonelli, F., Ragusa, R., Berlich, W., Blum, V., Büscher, H., Dietl, G., Gani, C., Gotzhein, H., Kroha, G., Lütjen, G., Lutz, C., Mannert, W., Männer, H. G., Moser, R., Richter, A., Rosado Schlosser, S., Schael, R., Settle, H., Seywerd, H., Stenzel, W., Wiedenmann, G., Wolf, J., Boucrot, O., Callot, S., Chen, M., Davier, L., Duflot, J. F., Grivaz, Heusse, P. h., A., Höcker, A., Jacholkowska, M. M., Kado, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, M. H., Schune, L., Serin, E., Tournefier, J. J., Veillet, I., Videau, D., Zerwa, P., Azzurri, G., Bagliesi, S., Bettarini, C., Bozzi, G., Calderini, R., Dell'Orso, R., Fantechi, I., Ferrante, A., Giassi, Gregorio, Anna, F., Ligabue, A., Lusiani, P. S., Marrocchesi, A., Messineo, F., Palla, G., Rizzo, G., Sanguinetti, A., Sciabà, G., Sguazzoni, J., Steinberger, R., Tenchini, C., Vannini, A., Venturi, P. G., Verdini, G. A., Blair, L. M., Bryant, J. T., Chamber, J., Cole, M. G., Green, T., Medcalf, P., Perrodo, J. A., Strong, J. H., von Wimmersperg Toeller, D. R., Botterill, R. W., Clifft, T. R., Edgecock, S., Haywood, P., Maley, P. R., Norton, J. C., Thompson, A. E., Wright, B., Bloch Devaux, P., Cola, B., Fabbro, G., Faı̈f, E., Lançon, M. C., Lemaire, E., Locci, P., Perez, H., Przysiezniak, J., Rander, J. F., Renardy, A., Rosowsky, A., Roussarie, A., Trabelsi, B., Vallage, S. N., Black, J. H., Dann, H. Y., Kim, N., Konstantinidi, A. M., Litke, M. A., Mcneil, G., Taylor, C. N., Booth, C. A. J., Brew, S., Cartwright, F., Combley, M. S., Kelly, M., Lehto, J., Reeve, L. F., Thompson, K., Affholderbach, A., Böhrer, S., Brandt, G., Cowan, J., Fo, C., Grupen, L., Smolik, F., Stephan, M., Apollonio, Bosisio, Luciano, R., Della Marina, Giannini, Gianrossano, B., Gobbo, G., Musolino, J., Putz, J., Rothberg, S., Wasserbaech, R. W., William, S. R., Armstrong, E., Charle, P., Elmer, D. P. S., Ferguson, Y., Gao, S., González, T. C., Greening, O. J., Haye, H., Hu, S., Jin, P. A., McNamara III, J. M., Nachtman, J., Nielsen, W., Orejudo, Y. B., Pan, Y., Saadi, I. J., Scott, J., Walsh, Sau Lan, Wu, X., Wu, J. M., Yamartino, and G., Zobernig
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex] ,010308 nuclear & particles physics ,Electron–positron annihilation ,Monte Carlo method ,High Energy Physics::Phenomenology ,01 natural sciences ,Luminosity ,ALEPH Experiment ,Nuclear physics ,Distribution (mathematics) ,0103 physical sciences ,Mass spectrum ,[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] ,Invariant mass ,High Energy Physics::Experiment ,010306 general physics ,Nuclear Experiment ,ALEPH experiment ,Particle Physics - Experiment ,Energy (signal processing) - 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 10.65 pb(-1) collected with the ALEPH detector at a mean centre-of-mass energy of 172.09 GeV. The invariant mass distribution of simulated events are fitted to the experimental; distributions and the following W masses are obtained: WW --> , m(W) = 81.30 +/- 0.47(stat.) +/- 0.11(syst.)GeV/c(2), WW --> l nu (l=e,mu), m(W) = 80.54 +/- 0.47(stat.) +/- 0.11(syst.)GeV/c(2), WW --> tau nu, m(W) = 79.56 +/- 1.08(stat.) +/- 0.23(syst.) GeV/c(2). The statistical errors are the expected errors for Monte Carlo samples of the same integrated luminosity as the data. The combination of these three measurements gives: m(W) = 80.80 +/- 0.32(stat.) +/- 0.11(syst.) +/- 0.03(LEP energy) GeV/c(2). (C) 1998 Elsevier Science B.V.