Two-particle correlations in pp, (p)over-bar(p)over-bar and K(S)(0)K(S)(0) pairs from hadronic Z decays

Schael, S; Barate, R; Bruneliere, R; De Bonis, I; Decamp, D; Goy, C; Jezequel, S; Lees, Jp; Martin, F; Merle, E; Minard, Mn; Pietrzyk, B; Trocme, B; Bravo, S; Casado, Mp; Chmeissani, M; Crespo, Jm; 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, Xu; Xue, S; Zhang, J; Zhang, L; Zhao, W; Abbaneo, D; Barklow, T; Buchmuller, O; Cattaneo, M; Clerbaux, B; Drevermann, H; Forty, Rw; Frank, M; Gianotti, F; Hansen, Jb; Harvey, J; Hutchcroft, De; Janot, P; Jost, B; Kado, M; Mato, P; Moutoussi, A; Ranjard, F; Rolandi, Luigi; 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, Jm; Perret, P; Hansen, Jd; Hansen, Jr; Hansen, Ph; Kraan, Ac; Nilsson, Bs; Kyriakis, A; Markou, C; Simopoulou, E; Vayaki, A; Zachariadou, K; Blondel, A; Brient, Jc; Machefert, F; Rouge, A; Videau, H; Ciulli, V; Focardi, E; Parrini, G; Antonelli, A; Antonelli, M; Bencivenni, G; Bossi, F; Capon, G; Cerutti, E; Chiarella, V; Laurelli, P; Mannocchi, G; Murtas, Gp; Passalacqua, L; Kennedy, J; Lynch, Jg; Negus, P; O'Shea, V; Thompson, As; Wasserbaech, S; Cavanaugh, R; Dhamotharan, S; Geweniger, C; Hanke, P; Hepp, V; Kluge, Ee; Putzer, A; Stenzel, H; Tittel, K; Wunsch, M; Beuselinck, R; Cameron, W; Davies, G; Doman, Pj; Girone, M; Marinelli, N; Nowell, J; Rutherford, Sa; Sedgbeer, Jk; Thompson, Jc; White, R; Ghete, Vm; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; Bouhova Thacker, E; Bowdery, Ck; Clarke, Dp; Ellis, G; Finch, Aj; Foster, F; Hughes, G; Rwl, Jones; Pearson, Mr; Robertson, Na; Smizanska, M; van der Aa, O; Delaere, C; Leibenguth, G; Lemaitre, V; Blumenschein, U; Holldorfer, F; Jakobs, K; Kayser, F; Kleinknecht, K; Muller, As; Renk, B; Sander, Hg; Schmeling, S; Wachsmuth, H; Zeitnitz, C; Ziegler, T; Bonissent, A; Coyle, P; Curtil, C; Ealet, A; Fouchez, D; Payre, P; Tilquin, A; Ragusa, F; David, A; Dietl, H; Ganis, G; Huttmann, K; Lutjens, G; Manner, W; Moser, Hg; Settles, R; Villegas, M; Wolf, G; Boucrot, J; Callot, O; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Jacholkowska, A; Serin, L; Veillet, Jj; Azzurri, P; Bagliesi, G; Boccali, T; Foa, L; Giammanco, A; Giassi, A; Ligabue, Franco; Messineo, A; Palla, F; Sanguinetti, G; Sciaba, A; Spagnolo, P; Tenchini, R; Venturi, A; Verdini, Pg; Awunor, O; Blair, Ga; Cowan, G; Garcia Bellido, A; Green, Mg; Medcalf, T; Misiejuk, A; Strong, Ja; Teixeira Dias, P; Clifft, Rw; Edgecock, Tr; Norton, Pr; Tomalin, Ir; Ward, Jj; Bloch Devaux, B; Boumediene, D; Colas, P; Fabbro, B; Lancon, E; Lemaire, Mc; Locci, E; Perez, P; Rander, J; Tuchming, B; Vallage, B; Litke, Am; Taylor, G; Booth, Cn; Cartwright, S; Combley, F; Hodgson, Pn; Lehto, M; Thompson, Lf; Bohrer, A; Brandt, S; Grupen, C; Hess, J; Ngac, A; Prange, G; Borean, C; Giannini, G; H, He; Putz, J; Rothberg, J; Armstrong, Sr; Berkelman, K; Cranmer, K; Dps, Ferguson; Gao, Y; Gonzalez, S; Hayes, Oj; H, Hu; Jin, S; Kile, J; Mcnamara, Pa; Nielsen, J; Pan, Yb; von Wimmersperg Toeller JH,; Wiedenmann, W; J, Wu; Sl, Wu; X, Wu; Zobernig, G; Dissertori, G.

doi:10.1016/j.physletb.2004.11.048

Two-particle correlations in pp, (p) over bar(p) over bar and K(S)(0) K(S)(0) pairs have been studied in hadronic Z decays recorded at LEP with the ALEPH detector. The correlations were measured as a function of the four-momentum difference Q of the pair. For pp, (p) over bar(p) over bar pairs a depletion of events is observed in the region Q < 3 GeV, and for K(S)(0)K(S)(0) pairs an enhancement of events is observed in the region Q < 0.5 GeV. These features are consistent with expectations from Fermi-Dirac and Bose-Einstein statistics, respectively. (c) 2004 Elsevier B.V. All rights reserved.