Coherent soft particle production in Z decays into three jets

Autor: Abdallah, J Abreu, P Adam, W Adzic, P Albrecht, T and Alderweireld, T Alemany-Fernandez, R Allmendinger, T and Allport, PP Amaldi, U Amapane, N Amato, S Anashkin, E and Andreazza, A Andringa, S Anjos, N Antilogus, P Apel, WD Arnoud, Y Ask, S Asman, B Augustin, JE and Augustinus, A Baillon, P Ballestrero, A Bambade, P and Barbier, R Bardin, D Barker, G Baroncelli, A Battaglia, M Baubillier, M Becks, KH Begalli, M Behrmann, A and Ben-Haim, E Benekos, N Benvenuti, A Berat, C Berggren, M and Berntzon, L Bertrand, D Besancon, M Besson, N Bloch, D Blom, M Bluj, M Bonesini, M Boonekamp, M Booth, PSL Borisov, G Botner, O Bouquet, B Bowcock, TJV and Boyko, I Bracko, M Brenner, R Brodet, E Bruckman, P and Brunet, JM Bugge, L Buschmann, P Calvi, M Camporesi, T and Canale, V Carena, F Castro, N Cavallo, F Chapkin, M and Charpentier, P Checchia, P Chierici, R Chliapnikov, P and Chudoba, J Chung, SU Cieslik, K Collins, P Contri, R and Cosme, G Cossutti, E Costa, MJ Crennell, D Cuevas, J and D'Hondt, J Dalmau, J da Silva, T Da Silva, W Della Ricca, G De Angelis, A De Boer, W De Clercq, C De Lotto, B De Maria, N De Min, A de Paula, L Di Ciaccio, L Di Simone, A Doroba, K Drees, J Dris, M Eigen, G and Ekelof, T Ellert, M Elsing, M Santo, MCE Fanourakis, G and Fassouliotis, D Feindt, M Fernandez, J Ferrer, A and Ferro, F Flagmeyer, U Foeth, H Fokitis, E Fulda-Quenzer, F Fuster, J Gandelman, M Garcia, C Gavillet, P and Gazis, E Gokieli, R Golob, B Gomez-Ceballos, G and Goncalves, P Graziani, E Grosdidier, G Grzelak, K Guy, J and Haag, C Hallgren, A Hamacher, K Hamilton, K Haug, S and Hauler, R Hedberg, V Hennecke, M Herr, H Hoffman, J and Holmgren, SO Holt, PJ Houlden, MA Hultqvist, K and Jackson, JN Jarlskog, G Jarry, P Jeans, D Johansson, EK and Johansson, PD Jonsson, P Joram, C Jungermann, L and Kapusta, F Katsanevas, S Katsoufis, E Kernel, G and Kersevan, BP Kerzel, U Kiiskinen, A King, BT Kjaer, NJ and Kluit, P Kokkinias, P Kourkoumelis, C Kouznetsov, O and Krumstein, Z Kucharczyk, M Lamsa, J Leder, G Ledroit, F and Leinonen, L Leitner, R Lemonne, J Lepeltier, V and Lesiak, T Liebig, W Liko, D Lipniacka, A Lopes, JH and Lopez, JM Loukas, D Lutz, P Lyons, L MacNaughton, J and Malek, A Maltezos, S Mandl, E Marco, J Marco, R and Marechal, B Margoni, M Marin, JC Mariotti, C Markou, A and Martinez-Rivero, C Masik, J Mastroyiannopoulos, N and Matorras, F Matteuzzi, C Mazzucato, E Mazzucato, M and McNulty, R Meroni, C Migliore, E Mitaroff, W Mjoernmark, U Moa, T Moch, M Moenig, K Monge, R Montenegro, J and Moraes, D Moreno, S Morettini, P Mueller, U Muenich, K Mulders, M Mundim, L Murray, W Muryn, B Myatt, G and Myklebust, T Nassiakou, A Navarria, E Nawrocki, K and Nicolaidou, R Nikolenko, M Oblakowska-Mucha, A Obraztsov, V and Olshevski, A Onofre, A Orava, R Osterberg, K Ouraou, A Oyanguren, A Paganoni, M Paiano, S Palacios, JP and Palka, H Papadopoulou, TD Pape, L Parkes, C Parodi, F and Parzefall, U Passeri, A Passon, O Peralta, L and Perepelitsa, V Perrotta, A Petrolini, A Piedra, J Pieri, L Pierre, F Pimenta, M Piotto, E Podobnik, T and Poireau, V Pol, ME Polok, G Poropat, P Pozdniakov, V and Pukhaeva, N Pullia, A Rames, J Ramler, L Read, A and Rebecchi, P Rehn, J Reid, D Reinhardt, R Renton, P and Richard, F Ridky, J Rivero, M Rodriguez, D Romero, A and Ronchese, P Roudeau, P Rovelli, T Ruhlmann-Kleider, V and Ryabtchikov, D Sadovsky, A Salmi, L Salt, J and Savoy-Navarro, A Schwickerath, U Segar, A Sekulin, R and Siebel, M Siskian, A Smadja, G Smirnova, O Sokolov, A and Sopczak, A Sosnowski, R Spassov, T Stanitzki, M and Stocchi, A Strauss, J Stugu, B Szczekowski, M Szeptycka, M Szumlak, T Tabarelli, T Taffard, AC Tegenfeldt, E and Timmermans, J Tkatchev, L Tobin, M Todorovova, S Tome, B and Tonazzo, A Tortosa, P Travnicek, P Treille, D and Tristram, G Trochimczuk, M Troncon, C Turluer, ML and Tyapkin, IA Tyapkin, P Tzamarias, S Uvarov, V Valenti, G and Van Dam, P Van Eldik, J Van Lysebetten, A van Remortel, N Van Vulpen, I Vegni, G Veloso, E Venus, W Verdier, P Verzi, V Vilanova, D Vitale, L Vrba, V Wahlen, H and Washbrook, AJ Weiser, C Wicke, D Wickens, J and Wilkinson, G Winter, M Witek, M Yushchenko, O Zalewska, A Zalewski, P Zavrtanik, D Zhuravlov, V Zimin, NI and Zintchenko, A Zupan, M
Jazyk: angličtina
Rok vydání: 2005
Předmět:
Popis: 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 C-A/C-F = 9/4. This result strongly supports the assumption of local parton-hadron duality, LPHD, at low hadron momentum. (C) 2004 Published by Elsevier B.V.
Databáze: OpenAIRE