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Bose-Einstein Correlations in $e^{+} e^{-} \to W^{+}W^{-}$ at 172 and 183 GeV

By G Abbiendi, K Ackerstaff, Gideon Alexander, J Allison, N Altekamp, K J Anderson, S Anderson, S Arcelli, S Asai, S F Ashby, D A Axen, Georges Azuelos, A H Ball, E Barberio, R J Barlow, R Bartoldus, J Richard Batley, S Baumann, J Bechtluft, T Behnke, K W Bell, G Bella, A Bellerive, Stanislaus Cornelius Maria Bentvelsen, Siegfried Bethke, S Betts, O Biebel, A Biguzzi, S D Bird, Volker Blobel, Ian J Bloodworth, P Bock, J Böhme, D Bonacorsi, M Boutemeur, S Braibant, P G Bright-Thomas, L Brigliadori, R M Brown, Helfried J Burckhart, P Capiluppi, R K Carnegie, A A Carter, J R Carter, C Y Chang, D G Charlton, D Chrisman, C Ciocca, P E L Clarke, E Clay, I Cohen, J E Conboy, O C Cooke, C Couyoumtzelis, R L Coxe, M Cuffiani, S Dado, G M Dallavalle, R Davis, S De Jong, A de Roeck, P J Dervan, Klaus Desch, B Dienes, M S Dixit, J Dubbert, E Duchovni, G Duckeck, I P Duerdoth, D Eatough, P G Estabrooks, E Etzion, Franco Luigi Fabbri, M Fanti, A A Faust, F Fiedler, M Fierro, I Fleck, R Folman, A Fürtjes, D I Futyan, P Gagnon, J W Gary, J Gascon, S M Gascon-Shotkin, G Gaycken, C Geich-Gimbel, G Giacomelli, P Giacomelli, V Gibson, W R Gibson, D M Gingrich, D A Glenzinski, J Goldberg, W Gorn, C Grandi, K Graham, E Gross, Jacob Grunhaus, M Gruwé, G G Hanson, M Hansroul, M Hapke, K Harder, A Harel, C K Hargrove, C Hartmann, M Hauschild, C M Hawkes, R Hawkings, Richard J Hemingway, M Herndon, G Herten, R D Heuer, M D Hildreth, J C Hill, P R Hobson, M Hoch, Andreas Höcker, K Hoffman, R James Homer, A K Honma, D Horváth, K R Hossain, R Howard, P Hüntemeyer, P Igo-Kemenes, D C Imrie, K Ishii, F R Jacob, A Jawahery, H Jeremie, Martin Paul Jimack, C R Jones, P Jovanovic, T R Junk, D A Karlen, V G Kartvelishvili, K Kawagoe, T Kawamoto, P I Kayal, Richard K Keeler, R G Kellogg, B W Kennedy, D H Kim, A Klier, S Kluth, T Kobayashi, M Kobel, D S Koetke, T P Kokott, M Kolrep, S Komamiya, R V Kowalewski, T Kress, P Krieger, J Von Krogh, T Kühl, P Kyberd, G D Lafferty, Hagar Yaël Landsman, D Lanske, J Lauber, S R Lautenschlager, I Lawson, J G Layter, D Lazic, A M Lee, Daniel Lellouch, J Letts, L Levinson, R Liebisch, B List, C Littlewood, A W Lloyd, S L Lloyd, F K Loebinger, G D Long, Michael J Losty, J Ludwig, D Liu, A Macchiolo, A L MacPherson, W F Mader, M Mannelli, S Marcellini, C Markopoulos, A J Martin, J P Martin, G Martínez, T Mashimo, P Mättig, W J McDonald, J A McKenna, E A McKigney, T J McMahon, R A McPherson, F Meijers, S Menke, F S Merritt, H Mes, J Meyer, Aldo Michelini, S Mihara, G Mikenberg, D J Miller, R Mir, W Mohr, A Montanari, T Mori, K Nagai, I Nakamura, H A Neal, B Nellen, R Nisius, S W O'Neale, F G Oakham, F Odorici, H O Ögren, M J Oreglia, S Orito, J Pálinkás, G Pásztor, J R Pater, G N Patrick, J Patt, R Pérez-Ochoa, S Petzold, P Pfeifenschneider, J E Pilcher, James L Pinfold, D E Plane, P R Poffenberger, J Polok, M B Przybycien, C Rembser, Hartmut Rick, S Robertson, S A Robins, N L Rodning, J M Roney, K Roscoe, A M Rossi, Y Rozen, K Runge, O Runólfsson, D R Rust, K Sachs, T Saeki, O Sahr, W M Sang, E Sarkisyan-Grinbaum, C Sbarra, A D Schaile, O Schaile, F Scharf, P Scharff-Hansen, J Schieck, B Schmitt, S Schmitt, A Schöning, M Schröder, M Schumacher, C Schwick, W G Scott, R Seuster, T G Shears, B C Shen, C H Shepherd-Themistocleous, P Sherwood, G P Siroli, A Sittler, A Skuja, A M Smith, G A Snow, Randall J Sobie, S Söldner-Rembold, S Spagnolo, M Sproston, A Stahl, K Stephens, J Steuerer, K Stoll, D Strom, R Ströhmer, B Surrow, S D Talbot, S Tanaka, P Taras, S Tarem, R Teuscher, M Thiergen, J Thomas, M A Thomson, E Von Törne, E Torrence, S Towers, I Trigger, Z L Trócsányi, E Tsur, A S Turcot, M F Turner-Watson, I Ueda, R Van Kooten, P Vannerem, M Verzocchi, H Voss, F Wäckerle, A Wagner, C P Ward, D R Ward, P M Watkins, A T Watson, N K Watson, P S Wells, N Wermes, J S White, G W Wilson, J A Wilson, T R Wyatt, S Yamashita, G Yekutieli, V Zacek and D Zer-Zion

Abstract

Bose-Einstein correlations between like-charge pions are studied in hadronic final states produced by e+e- annihilations at center-of-mass energies of 172 and 183 GeV. Three event samples are studied, each dominated by one of the processes W+W- to qqlnu, W+W- to qqqq, or (Z/g)* to qq. After demonstrating the existence of Bose-Einstein correlations in W decays, an attempt is made to determine Bose-Einstein correlations for pions originating from the same W boson and from different W bosons, as well as for pions from (Z/g)* to qq events. The following results are obtained for the individual chaoticity parameters lambda assuming a common source radius R: lambda_same = 0.63 +- 0.19 +- 0.14, lambda_diff = 0.22 +- 0.53 +- 0.14, lambda_Z = 0.47 +- 0.11 +- 0.08, R = 0.92 +- 0.09 +- 0.09. In each case, the first error is statistical and the second is systematic. At the current level of statistical precision it is not established whether Bose-Einstein correlations, between pions from different W bosons exist or not

Topics: Particle Physics - Experiment
Publisher: 'Springer Science and Business Media LLC'
Year: 1998
DOI identifier: 10.1007/s100529900014
OAI identifier: oai:cds.cern.ch:371542
Provided by: CERN Document Server

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