Bose-Einstein correlations are studied in semileptonic (WW-->qq¯lν) and fully hadronic (WW-->qq¯qq¯) W-pair decays with the ALEPH detector at LEP at centre-of-mass energies of 172, 183 and 189 GeV. They are compared with those made at the Z peak after correction for the different flavour compositions. A Monte Carlo model of Bose-Einstein correlations based on the JETSET hadronization scheme was tuned to the Z data and reproduces the correlations in the WW-->qq¯lν events. The same Monte Carlo reproduces the correlations in the WW-->qq¯qq¯ channel assuming independent fragmentation of the two W's. A variant of this model with Bose-Einstein correlations between decay products of different W's is disfavoured.
Bose-Einstein correlations in W pair decays / R. Barate , D. Decamp, Philippe Ghez, C. Goy, S. Jezequel, J.P. Lees, F. Martin, E. Merle, M.N. Minard, B. Pietrzyk , R. Alemany, S. Bravo, M.P. Casado, M. Chmeissani, J.M. Crespo, E. Fernandez, M. Fernandez-Bosman, L. Garrido, E. Grauges, A. Juste, M. Martinez, G. Merino, R. Miquel, L.M. Mir, P. Morawitz, A. Pacheco, I. Riu, H. Ruiz , A. Colaleo, D. Creanza, M. de Palma, 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, G. Boix, O. Buchmuller, M. Cattaneo, F. Cerutti, V. Ciulli, G. Davies, G. Dissertori, H. Drevermann, R.W. Forty, M. Frank, F. Gianotti, T.C. Greening, A.W. Halley, J.B. Hansen, John Harvey, P. Janot, B. Jost, M. Kado, O. Leroy, P. Maley, P. Mato, A. Minten, A. Moutoussi, F. Ranjard, Gigi Rolandi, D. Schlatter, M. Schmitt, O. Schneider, P. Spagnolo, W. Tejessy, F. Teubert, E. Tournefier, A. Valassi, A.E. 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.C. Montret, D. Pallin, J.M. Pascolo, P. Perret, F. Podlyski, J.D. Hansen, J.R. Hansen, P.H. Hansen, B.S. Nilsson, B. Rensch, A. Waananen , G. Daskalakis, A. Kyriakis, C. Markou, E. Simopoulou, A. Vayaki, A. Blondel, J.C. Brient, F. Machefert, A. Rouge, M. Swynghedauw, R. Tanaka, H. Videau, E. Focardi, G. Parrini, K. Zachariadou, M. Corden, C. Georgiopoulos , A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, V. Chiarella, P. Laurelli, G. Mannocchi , F. Murtas, G.P. Murtas, L. Passalacqua, M. Pepe-Altarelli , M. Chalmers, J. Kennedy, J.G. Lynch, P. Negus, V. O'Shea, B. Raeven, D. Smith, P. Teixeira-Dias, A.S. Thompson, J.J. Ward , R. Cavanaugh, S. Dhamotharan, C. Geweniger , P. Hanke, V. Hepp, E.E. Kluge, G. Leibenguth, A. Putzer, K. Tittel, S. Werner, M. Wunsch , R. Beuselinck, D.M. Binnie, W. Cameron, P.J. Dornan, M. Girone, S. Goodsir, N. Marinelli, E.B. Martin, J. Nash, J. Nowell, H. Przysiezniak , A. Sciaba, J.K. Sedgbeer, J.C. Thompson, Evelyn J. Thomson, M.D. Williams , V.M. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, C.K. Bowdery, P.G. Buck, G. Ellis, A.J. Finch, F. Foster, G. Hughes, R.W.L. Jones, N.A. Robertson, M. Smizanska, M.I. Williams , I. Giehl, F. Holldorfer, K. Jakobs, K. Kleinknecht, M. Krocker, A.S. Muller, H.A. Nurnberger, G. Quast, B. Renk, E. Rohne, H.G. Sander, S. Schmeling, H. Wachsmuth, C. Zeitnitz, T. Ziegler , A. Bonissent, J. Carr, P. Coyle, A. Ealet, D. Fouchez, A. Tilquin, M. Aleppo, M. Antonelli, Simone S. Gilardoni, F. Ragusa , Volker Buescher, H. Dietl, G. Ganis, K. Huttmann, G. Lutjens, C. Mannert, W. Manner, H.G. 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.F. Grivaz, P. Heusse, A. Jacholkowska, J. Lefrancois, L. Serin, J.J. Veillet, I. Videau, J.B. de Vivie de Regie, D. Zerwas, Giuseppe Bagliesi, T. Boccali, C. Bozzi, G. Calderini, R. Dell'Orso, I. Ferrante, A. Giassi, A. Gregorio, F. Ligabue, P.S. Marrocchesi, A. Messineo, F. Palla, G. Rizzo, G. Sanguinetti, G. Sguazzoni, R. Tenchini, A. Venturi, P.G. Verdini, G.A. Blair, J. Coles, G. Cowan, M.G. Green, D.E. Hutchcroft, L.T. Jones, T. Medcalf, J.A. Strong, D.R. Botterill, R.W. Clifft, T.R. Edgecock, P.R. Norton, I.R. Tomalin, Brigitte Bloch-Devaux, P. Colas, B. Fabbro, G. Faif, E. Lancon, M.C. Lemaire, E. Locci, P. Perez, J. Rander, J.F. Renardy, A. Rosowsky, P. Seager, A. Trabelsi, B. Tuchming, B. Vallage, S.N. Black, J.H. Dann, C. Loomis, H.Y. Kim, N. Konstantinidis, A.M. Litke, M.A. McNeil, G. Taylor, C.N. Booth, S. Cartwright, F. Combley, P.N. Hodgson, M. Lehto, L.F. Thompson, K. Affholderbach, Armin Boehrer, S. Brandt, C. Grupen, J. Hess, A. Misiejuk, G. Prange, U. Sieler, C. Borean, G. Giannini, B. Gobbo, J. Putz, J.E. Rothberg, S. Wasserbaech, R.W. Williams, S.R. Armstrong, P. Elmer, D.P.S. Ferguson, Y. Gao, S. Gonzalez, O.J. Hayes, H. Hu, S. Jin, J. Kile, P.A. McNamara, J. Nielsen, W. Orejudos, Y.B. Pan, Y. Saadi, I.J. Scott, J. Walsh, J.H. von Wimmersperg-Toeller, S.L. Wu, X. Wu, G. Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 478:1/3(2000), pp. 50-64.
Bose-Einstein correlations in W pair decays
M. Aleppo;F. Ragusa;
2000
Abstract
Bose-Einstein correlations are studied in semileptonic (WW-->qq¯lν) and fully hadronic (WW-->qq¯qq¯) W-pair decays with the ALEPH detector at LEP at centre-of-mass energies of 172, 183 and 189 GeV. They are compared with those made at the Z peak after correction for the different flavour compositions. A Monte Carlo model of Bose-Einstein correlations based on the JETSET hadronization scheme was tuned to the Z data and reproduces the correlations in the WW-->qq¯lν events. The same Monte Carlo reproduces the correlations in the WW-->qq¯qq¯ channel assuming independent fragmentation of the two W's. A variant of this model with Bose-Einstein correlations between decay products of different W's is disfavoured.Pubblicazioni consigliate
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