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Author(s)
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Metreveli, Z V ; Seth, K K ; Tomaradze, A G ; Zweber, P ; Ahmed, S ; Alam, M S ; Jian, L ; Saleem, M ; Wappler, F ; Eckhart, E ; Gan, K K ; Gwon, C ; Hart, T ; Honscheid, K ; Hufnagel, D ; Kagan, H ; Kass, R ; Pedlar, T K ; Thayer, J B ; Wilksen, T ; Zoeller, M M ; Muramatsu, H ; Richichi, S J ; Severini, H ; Skubic, P L ; Dytman, S A ; Müller, J A ; Nam, S ; Savinov, V ; Chen, S ; Hinson, J W ; Lee, J ; Miller, D H ; Pavlunin, V ; Shibata, E I ; Shipsey, I P J ; Cronin-Hennessy, D ; Lyon, A L ; Park, C S ; Park, W ; Thorndike, E H ; Coan, T E ; Gao, Y S ; Liu, F ; Maravin, Y ; Narsky, I ; Stroynowski, R ; Artuso, M ; Boulahouache, C ; Bukin, K ; Dambasuren, E ; Khroustalev, K ; Moneti, G C ; Mountain, R ; Nandakumar, R ; Skwarnicki, T ; Stone, S ; Wang, J C ; Mahmood, A H ; Csorna, S E ; Danko, I ; Xu, Z ; Bonvicini, G ; Cinabro, D ; Dubrovin, M ; McGee, S ; Bornheim, A ; Lipeles, E ; Pappas, S P ; Shapiro, A ; Sun, W M ; Weinstein, A J ; Masek, G ; Paar, H P ; Mahapatra, R ; Briere, R A ; Chen, G P ; Ferguson, T ; Tatishvili, G T ; Vogel, H ; Adam, N E ; Alexander, J P ; Berkelman, K ; Blanc, F ; Boisvert, V ; Cassel, David G ; Drell, P S ; Duboscq, J E ; Ecklund, K M ; Ehrlich, R ; Galik, R S ; Gibbons, L ; Gittelman, B ; Gray, S W ; Hartill, D L ; Heltsley, B K ; Hsu, L ; Jones, C D ; Kandaswamy, J ; Kreinick, D L ; Magerkurth, A ; Mahlke-Krüger, H ; Meyer, T O ; Mistry, N B ; Nordberg, E ; Patterson, J R ; Peterson, D ; Pivarski, J ; Riley, D ; Sadoff, A J ; Schwarthoff, H ; Shepherd, M R ; Thayer, J G ; Urner, D ; Valant-Spaight, B L ; Viehhauser, G ; Warburton, A ; Weinberger, M ; Athar, S B ; Avery, P ; Breva-Newell, L ; Potlia, V ; Stöck, H ; Yelton, J ; Brandenburg, G ; Ershov, A ; Kim, D Y J ; Wilson, R ; Benslama, K ; Eisenstein, B I ; Ernst, J ; Gollin, G D ; Hans, R M ; Karliner, I ; Lowrey, N ; Marsh, M A ; Plager, C ; Sedlack, C ; Selen, M ; Thaler, J J ; Williams, J ; Edwards, K W ; Ammar, R ; Besson, D ; Cervantes, M ; Zhao, X ; Anderson, S ; Frolov, V V ; Kubota, Y ; Lee, S J ; Li, S Z ; Poling, R A ; Smith, A ; Stepaniak, C J ; Urheim, J |
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Abstract
| Using a 13.7 fb/sup -1/ sample of continuum two-jet e/sup +/e/sup -/ to qq events collected with the CLEO detector, we have searched for correlations between Lambda and Lambda particles, specifically in cases where the opening angle between the two particles is large and each has momentum >1 GeV/c. Such correlations may indicate the presence of baryon number conservation at the primary quark level. A previous CLEO study of Lambda /sub c/ Lambda /sub c/ correlations indicated direct, associated production of primary charmed baryons Lambda /sub c/: e/sup +/e/sup -/ to cc to Lambda /sub c/ Lambda /sub c/. That effect was not observed in Monte Carlo simulations. Our current search for similar direct, associated production of Lambda baryons at the primary quark level (e/sup +/e/sup -/ to ss to Lambda Lambda , e.g.) qualitatively indicates a similar effect, although it relies on a Monte Carlo dependent subtraction of background Lambda Lambda production (based on the default JETSET 7.4 event generator). (12 refs). |