This paper describes a study of Bose-Einstein correlations made using the ALEPH detector at LEP. The correlations are found to enhance the two particle differential cross section for pairs of identical pions by a factor which can be roughly parametrized by R(Q) = 1 + lambda exp(-Q2-sigma(2)), where Q is the difference in the 3-momenta of the two pions in their centre of mass frame, lambda = 0.51 +/- 0.04 +/- 0.11 and sigma = 3.3 +/- 0.2 +/- 0.8 GeV-1, which corresponds to a source size of 0.65 +/- 0.04 +/- 0.16 fm. The large systematic errors on these results reflect their strong dependence on the choice of the reference sample used in the analysis. This problem is believed to occur primarily because of uncertainties in the rates of resonance production and a lack of knowledge about the pion-pion strong interaction. No significant correlations are seen amongst like-charged pion-kaon pairs.

A study of Bose-Einstein correlations ine+e− annihilation at 91 GeV / D. Decamp, B. Deschizeaux, C. Goy, J. Lees, M. Minard, R. Alemany, J. Crespo, M. Delfino, E. Fernandez, V. Gaitan, L. Garrido, L. Mir, A. Pacheco, M. Catanesi, D. Creanza, M. Depalma, A. Farilla, G. Iaselli, G. Maggi, M. Maggi, S. Natali, S. Nuzzo, M. Quattromini, A. Ranieri, G. Raso, F. Romano, E. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, Y. Gao, H. Hu, D. Huang, X. Huang, J. Lin, J. Lou, C. Qiao, T. Ruan, T. Wang, Y. Xie, D. Xu, R. Xu, J. Zhang, W. Zhao, W. Atwood, L. Bauerdick, F. Bird, E. Blucher, G. Bonvicini, F. Bossi, J. Boudreau, T. Burnett, H. Drevermann, R. Forty, C. Grab, R. Hagelberg, S. Haywood, J. Hilgart, B. Jost, M. Kasemann, J. Knobloch, A. Lacourt, E. Lancon, I. Lehraus, T. Lohse, A. Lusiani, A. Marchioro, M. Martinez, P. Mato, S. Menary, T. Meyer, A. Minten, A. Miotto, R. Miquel, H. Moser, J. Nash, P. Palazzi, F. Ranjard, G. Redlinger, L. Rolandi, A. Roth, J. Rothberg, M. Saich, D. Schlatter, M. Schmelling, W. Tejessy, H. Wachsmuth, S. Wasserbaech, W. Wiedenmann, W. Witzeling, J. Wotschack, Z. Ajaltouni, F. Badaud, M. Bardadinotwinowska, A. Bencheikh, R. Elfellous, A. Falvard, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, J. Montret, D. Pallin, P. Perret, B. Pietrzyk, J. Proriol, F. Prulhiere, G. Stimpfl, J. Hansen, J. Hansen, P. Hansen, R. Mollerud, B. Nilsson, I. Efthymiopoulos, E. Simopoulou, A. Vayaki, J. Badier, A. Blondel, G. Bonneaud, J. Brient, G. Fouque, A. Gamess, J. Harvey, S. Orteu, A. Rosowsky, A. Rouge, M. Rumpf, R. Tanaka, H. Videau, D. Candlin, E. Veitch, L. Moneta, G. Parrini, M. Corden, C. Georgiopoulos, M. Ikeda, J. Lannutti, D. Levinthal, M. Mermikides, L. Sawyer, A. Antonelli, R. Baldini, G. Bencivenni, G. Bologna, P. Campana, G. Capon, F. Cerutti, V. Chiarella, B. Dettorrepiazzoli, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G. Murtas, L. Passalacqua, M. Pepealtarelli, P. Picchi, P. Zografou, B. Altoon, O. Boyle, P. Colrain, A. Halley, I. Tenhave, J. Lynch, W. Maitland, W. Morton, C. Raine, J. Scarr, K. Smith, A. Thompson, R. Turnbull, B. Brandl, O. Braun, R. Geiges, C. Geweniger, P. Hanke, V. Hepp, E. Kluge, Y. Maumary, A. Putzer, B. Rensch, A. Stahl, K. Tittel, M. Wunsch, A. Belk, R. Beuselinck, D. Binnie, W. Cameron, M. Cattaneo, P. Dornan, S. Dugeay, A. Greene, J. Hassard, N. Lieske, S. Patton, D. Payne, M. Phillips, J. Sedgbeer, G. Taylor, I. Tomalin, A. Wright, P. Girtler, D. Kuhn, G. Rudolph, C. Bowdery, T. Brodbeck, A. Finch, F. Foster, G. Hughes, D. Jackson, N. Keemer, M. Nuttall, A. Patel, T. Sloan, S. Snow, E. Whelan, T. Barczewski, K. Kleinknecht, J. Raab, B. Renk, S. Roehn, H. Sander, H. Schmidt, F. Steeg, S. Walther, B. Wolf, J. Aubert, C. Benchouk, V. Bernard, A. Bonissent, J. Carr, P. Coyle, J. Drinkard, F. Etienne, S. Papalexiou, P. Payre, Z. Qian, D. Rousseau, P. Schwemling, M. Talby, S. Adlung, H. Becker, W. Blum, D. Brown, P. Cattaneo, G. Cowan, B. Dehning, H. Dietl, F. Dydak, M. Fernandezbosman, T. Hanslkozanecka, A. Jahn, W. Kozanecki, E. Lange, J. Lauber, G. Lutjens, G. Lutz, W. Manner, Y. Pan, R. Richter, H. Rotscheidt, J. Schroder, A. Schwarz, R. Settles, U. Stierlin, U. Stiegler, R. Stdenis, M. Takashima, J. Thomas, G. Wolf, V. Bertin, J. Boucrot, O. Callot, X. Chen, A. Cordier, M. Davier, J. Grivaz, P. Heusse, P. Janot, D. Kim, F. Lediberder, J. Lefrancois, A. Lutz, M. Schune, J. Veillet, I. Videau, Z. Zhang, F. Zomer, D. Abbaneo, S. Amendolia, G. Bagliesi, G. Batignani, L. Bosisio, U. Bottigli, C. Bradaschia, M. Carpinelli, M. Ciocci, R. Dellorso, I. Ferrante, F. Fidecaro, L. Foa, E. Focardi, F. Forti, C. Gatto, A. Giassi, M. Giorgi, F. Ligabue, E. Mannelli, P. Marrocchesi, A. Messineo, F. Palla, G. Sanguinetti, J. Steinberger, R. Tenchini, G. Tonelli, G. Triggiani, C. Vannini, A. Venturi, P. Verdini, J. Walsh, J. Carter, M. Green, P. March, T. Medcalf, I. Quazi, J. Strong, L. West, T. Wildish, D. Botterill, R. Clifft, T. Edgecock, M. Edwards, S. Fisher, T. Jones, P. Norton, D. Salmon, J. Thompson, B. Blochdevaux, P. Colas, E. Locci, S. Loucatos, E. Monnier, P. Perez, J. Perlas, F. Perrier, J. Rander, J. Renardy, A. Roussarie, J. Schuller, J. Schwindling, B. Vallage, J. Ashman, C. Booth, C. Buttar, R. Carney, S. Cartwright, F. Combley, M. Dogru, F. Hatfield, J. Martin, D. Parker, P. Reeves, L. Thompson, E. Barberio, S. Brandt, C. Grupen, H. Meinhard, L. Mirabito, U. Schafer, H. Seywerd, G. Ganis, G. Giannini, B. Gobbo, F. Ragusa, L. Bellantoni, D. Cinabro, J. Conway, D. Cowen, Z. Feng, D. Ferguson, Y. Gao, J. Grahl, J. Harton, R. Jared, R. Johnson, B. Leclaire, C. Lishka, Y. Pan, J. Pater, Y. Saadi, V. Sharma, Z. Shi, Y. Tang, A. Walsh, J. Wear, F. Weber, M. Whitney, S. Wu, G. Zobernig. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - 54:1(1992), pp. 75-85.

A study of Bose-Einstein correlations ine+e− annihilation at 91 GeV

F. Ragusa;
1992

Abstract

This paper describes a study of Bose-Einstein correlations made using the ALEPH detector at LEP. The correlations are found to enhance the two particle differential cross section for pairs of identical pions by a factor which can be roughly parametrized by R(Q) = 1 + lambda exp(-Q2-sigma(2)), where Q is the difference in the 3-momenta of the two pions in their centre of mass frame, lambda = 0.51 +/- 0.04 +/- 0.11 and sigma = 3.3 +/- 0.2 +/- 0.8 GeV-1, which corresponds to a source size of 0.65 +/- 0.04 +/- 0.16 fm. The large systematic errors on these results reflect their strong dependence on the choice of the reference sample used in the analysis. This problem is believed to occur primarily because of uncertainties in the rates of resonance production and a lack of knowledge about the pion-pion strong interaction. No significant correlations are seen amongst like-charged pion-kaon pairs.
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/175457
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