Measurement of the energy dependence of hadronic jet rates and the strong coupling alpha(s) from the four-jet rate with the DELPHI detector at LEP

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

Research output: Contribution to journalArticlepeer-review

11 Citations (SciVal)

Abstract

Hadronic events from the data collected with the DELPHI detector at LEP within the energy range from 89 GeV to 209 GeV are selected, their jet rates are determined and compared to predictions of four different event generators. One of them is the recently developed APACIC++ generator which performs a massive matrix element calculation matched to a parton shower followed by string fragmentation. The four-jet rate is used to measure alpha(s) in the next-to-leading-order approximation yielding alpha(s)(M-Z(2)) = 0.1175 +/- 0.0030. The running of alpha(s) determined by using four-jet events has been tested. The logarithmic energy slope is measured to be dalpha(s)(-1)/d log E-cm = 1.14 +/- 0.36. Since the analysis is based on four-jet final states it represents an alternative approach to previous DELPHI alpha(s) measurements using event shape distributions.
Original languageEnglish
Pages (from-to)413-426
JournalEuropean Physical Journal C. Particles and Fields
Volume38
Issue number4
DOIs
Publication statusPublished - 2005

Subject classification (UKÄ)

  • Subatomic Physics

Fingerprint

Dive into the research topics of 'Measurement of the energy dependence of hadronic jet rates and the strong coupling alpha(s) from the four-jet rate with the DELPHI detector at LEP'. Together they form a unique fingerprint.

Cite this