Observation of short range three-particle correlations in e+e− annihilations at LEP energies

• Published in: Physics letters. B Vol. 355; no. 1; pp. 415 - 424
• Main Authors: Abreu, P., Aleksan, R., Almehed, S., Alvsvaag, S.J., Amaldi, U., Andrieux, M.L., Åsman, B., Blous, K., Benvenuti, A.C., Bocci, V., Bonivento, W., Borisov, G., Bosworth, S., Bouquet, B., Bozzo, M., Brand, K.D., Calvi, M., Carena, F., Caso, C., Cattai, A., Chaussard, L., Checchia, P., Chochula, P., Collins, P., Contreras, J.L., Cortina, E., Dauncey, P.D., Davenport, M., De Boer, W., De Min, A., Dijkstra, H., Drees, J., Erzen, B., Fischer, P.-A., Gibbs, M., Gokieli, R., Golob, B., Gunther, M., Hernandez, J.J., Hilke, H.J., Hultqvist, K., Jonsson, P., Kluit, P., Kramer, P.-H., Kreuter, C., Krumstein, Z., Lacasta, C., Lamsa, J.W., Lapin, V., Lefebure, V., Maio, A., Malychev, V., Mariotti, C., Marti i Garcia, S., Medbo, J., Meroni, C., Michelotto, M., Moa, T., Mundim, L.M., Naraghi, F., Nemecek, S., Nieuwenhuizen, M., Nikolaenko, V., Oberschulte-Beckmann, W., Olshevski, A.G., Paganini, P., Pernegger, H., Petrolini, A., Piana, G., Poropat, P., Radojicic, D., Rahmani, H., Reale, M., Rebecchi, P., Regler, M., Saarikko, H., Sajot, G., Sannino, M., Sedykh, Y., Seitz, A., Sitar, B., Smirnov, N., Spassov, T., Squarcia, S., Staeck, H., Stanescu, C., Stepaniak, K., Stocchi, A., Szczekowski, M., Tabarelli, T., Tavernet, J.P., Tilquin, A., Toet, D.Z., Trombini, A., Tyndel, M., Vander Velde, C., Verlato, M., Wehr, A., Woschnagg, K., Zucchelli, G.C.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.1995; Elsevier
• Subjects: High Energy Physics - Experiment; Physics
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(95)00711-S

Measurements are presented of short range three-particle correlations in e + e − annihilations at LEP using data collected by the DELPHI detector. At small values of the four-momentum difference, strong three-particle correlations are observed for like-sign (+++ and −−−) and for unlike-sign (++− and +−−) pion combinations which are not a consequence of two-particle correlations. A possible explanation of the observed effects in like-sign combinations is the existence of higher order Bose-Einstein interference, which significantly changes the particle distributions in jets.