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  • Coherent soft particle prod...
    Adzic, P.; Alderweireld, T.; Allport, P.P.; Asman, B.; Baubillier, M.; Begalli, M.; Ben-Haim, E.; Blom, M.; Boonekamp, M.; Brodet, E.; Buschmann, P.; Cieslik, K.; Cosme, G.; Cossutti, F.; Costa, M.J.; De Boer, W.; De Clercq, C.; Drees, J.; Dris, M.; Elsing, M.; Fernandez, J.; Fokitis, E.; Fulda-Quenzer, F.; Gavillet, Ph; Golob, B.; Goncalves, P.; Hallgren, A.; Hamacher, K.; Hoffman, J.; Jarlskog, G.; Jeans, D.; Johansson, E.K.; Joram, C.; Kapusta, F.; Katsanevas, S.; Kiiskinen, A.; Kluit, P.; Kourkoumelis, C.; Lemonne, J.; Liko, D.; Lopez, J.M.; Lutz, P.; Lyons, L.; MacNaughton, J.; Marechal, B.; Marin, J.-C.; Martinez-Rivero, C.; Matorras, F.; Mazzucato, M.; Moa, T.; Moenig, K.; Montenegro, J.; Moraes, D.; Morettini, P.; Mundim, L.; Navarria, F.; Nicolaidou, R.; Olshevski, A.; Orava, R.; Ouraou, A.; Oyanguren, A.; Palacios, J.P.; Parodi, F.; Parzefall, U.; Peralta, L.; Perepelitsa, V.; Pierre, F.; Poireau, V.; Poropat, P.; Rivero, M.; Ronchese, P.; Roudeau, P.; Salt, J.; Savoy-Navarro, A.; Schwickerath, U.; Segar, A.; Smirnova, O.; Sopczak, A.; Stugu, B.; Szeptycka, M.; Szumlak, T.; Tabarelli, T.; Taffard, A.C.; Tome, B.; Travnicek, P.; Trochimczuk, M.; Turluer, M.-L.; Tyapkin, I.A.; Tyapkin, P.; Uvarov, V.; Valenti, G.; Van Lysebetten, A.; van Remortel, N.; Venus, W.; Verdier, P.; Vitale, L.; Wilkinson, G.; Yushchenko, O.; Zimin, N.I.; Zintchenko, A.

    Physics letters. B, 01/2005, Letnik: 605, Številka: 1-2
    Journal Article

    Low-energy particle production perpendicular to the event plane in three-jet events produced in Z decays in e+e− annihilation is measured and compared to that perpendicular to the event axis in two-jet events. The topology dependence of the hadron production ratio is found to agree with a leading-order QCD prediction. This agreement and especially the need for the presence of a destructive interference term gives evidence for the coherent nature of gluon radiation. Hadron production in three-jet events is found to be directly proportional to a single topological scale function of the inter-jet angles. The slope of the dependence of the multiplicity with respect to the topological scale was measured to be 2.211±0.014(stat.)±0.053(syst.) in good agreement with the expectation given by the colour-factor ratio CA/CF=9/4. This result strongly supports the assumption of local parton–hadron duality, LPHD, at low hadron momentum.