Bose-Einstein correlations in W-pair decays with an event-mixing technique

Schael, S; Barate, R; Brunelie,; R, R; DE BONIS, I; Decamp, D; Goy, C; Ze, J; Quel, S; Lees, J; Martin, F; Merle, E; Minard, M; Pietrzyk, B; Trocme, B; Bravo, S; Casado, M; Chmeissani, M; Crespo, J; Fernandez, E; FERNANDEZ BOSMAN, M; Garrido, L; Martinez, M; Pacheco, A; Ruiz, H; Colaleo, A; Creanza, D; DE FILIPPIS, N; 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; R, X; Xue, S; Zhang, J; Zhang, L; Zhao, W; Abbaneo, D; Barklow, T; Buchmu,; Ller, O; Cattaneo, M; Clerbaux, B; Drevermann, H; Forty, R; Frank, M; Gianotti, F; Hansen, J; Harvey, J; Hutchcroft, D; Janot, P; Jost, B; Kado, M; Mato, P; Moutoussi, A; Ranjard, F; Rolandi, L; Schlatter, D; Sguazzoni, G; Teubert, F; Valassi, A; Videau, I; Badaud, F; Dessagne, S; Falvard, A; Fayolle, D; Gay, P; Jousset, J; Michel, B; Monteil, S; Pallin, D; Pascolo, J; Perret, P; Hansen, J; Hansen, J; Hansen, P; Kraan, A; Nilsson, B; Kyriakis, A; Markou, C; Simopoulou, E; Vayaki, A; Zachariadou, K; Blondel, A; Brient, J; Machefert, F; Rouge, A; Videau, H; Ciulli, V; Focardi, E; Parrini, G; Antonelli, A; Antonelli, M; Bencivenni, G; Bossi, F; Capon, G; Cerutti, F; Chiarella, V; Laurelli, P; Mannocchi, G; Murtas, G; Passalacqua, L; Kennedy, J; Lynch, J; Negus, P; O'Shea, V; Thompson, A; Wasserbaech, S; Cavanaugh, R; Dhamotharan, S; Geweniger, C; Hanke, P; Hepp, V; Kluge, E; Putzer, A; Stenzel, H; Tittel, K; Wunsch, M; Beuselinck, R; Cameron, W; Davies, G; Dornan, P; Girone, M; Marinelli, N; Nowell, J; Rutherford, S; Sedgbeer, J; Thompson, J; White, R; Ghete, V; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; BOUHOVA THACKER, E; Bowdery, C; Clarke, D; Ellis, G; Finch, A; Foster, F; Hughes, G; Rwl, J; Pearson, M; Robertson, N; Smizanska, M; VAN DER AA, O; Delaere, C; Leibenguth, G; Lemaitre, V; Blumenschein, U; Ho,; Lldorfer, F; Jakobs, K; Kayser, F; Kleinknecht, K; Mu,; Ller, A; Renk, B; Sander, H; Schmeling, S; Wachsmuth, H; Zeitnitz, C; Ziegler, T; Bonissent, A; Coyle, P; Curtil, C; Ealet, A; Fouchez, D; Payre, P; Tilquin, A

Bose-Einstein correlations in W-pair decays are studied using data collected by the ALEPH detector at LEP at e+e- centre-of-mass energies from 183 to 209 GeV. The analysis is based on the comparison of WW→qq̄qq̄ events to "mixed" events constructed with the hadronic part of WW→qq̄ℓν events. The data are in agreement with the hypothesis that Bose-Einstein correlations are present only for pions from the same W decay. The JETSET model with Bose-Einstein correlations between pions from different W bosons is disfavoured.

SCHAEL S, BARATE R, BRUNELIE, RE R, DE BONIS I, DECAMP D, et al. (2005). Bose-Einstein correlations in W-pair decays with an event-mixing technique. PHYSICS LETTERS. SECTION B, 606(3-4), 265-275.