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
Articolo
Data di Pubblicazione:
2005
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.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
Abdallah J; Abreu P; Adam W; Adzic P; Albrecht T; Alderweireld T; Alemany-Fernandez R; Allmendinger T; Allport PP; Amaldi U; Amapane N; Amato S; Anashkin E; Andreazza A; Andringa S; Anjos N; Antilogus P; Apel WD; Arnoud Y; Ask S; Asman B; Augustin JE; Augustinus A; Baillon P; Ballestrero A; Bambade P; Barbier R; Bardin D; Barker GJ; Baroncelli A; Battaglia A; Baubillier M; Becks KH; Begalli M; Behrmann A; Ben-Haim E; Benekos N; Benvenuti A; Berat C; Berggren M; Berntzon L; Bertrand D; Besancon M; Besson N; Bloch D; Blom A; Bluj A; Bonesini A; Boonekamp M; Booth PSL; Borisov G; Botner O; Bouquet B; Bowcock TJV; Bovko I; Bracko M; Brenner R; Brodet E; Bruckman P; Brunet JM; Buschmann P; Calvi A; Camporesi T; Canale V; Carena F; Castro N; Cavallo F; Chapkin M; Charpentier P; Checchia P; Chierici R; Chliapnikov P; Chudoba J; Chung SU; Cieslik K; Collins P; Contri R; Cosme C; Cossutti F; Costa MJ; Crennell D; Cuevas J; 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; Eigen G; Ekelof T; Ellert A; Elsing M; Santo MCE; Fanourakis G; Fassouliotis D; Feindt M; Fernandez J; Ferrer A; Ferro F; Flagmeyer U; Foeth H; Fokitis E; Fulda-Quenzer F; Fuster J; Gandelman M; Garcia C; Gavillet P; Gazis E; Gokieli R; Golob B; Gomez-Ceballos G; Goncalves P; Graziani E; Grosdidier G; Grzelak K; Guy J; Haag C; Hallgren A; Hamacher K; Hamilton K; Haug S; Hauler F; Hedberg V; Hennecke M; Herr H; Hoffman J; Holmgren SO; Holt PJ; Houlden MA; Hultqvist K; Jackson JN; Jarlskog G; Jarry P; Jeans D; Johansson EK; Johansson PD; Jonsson P; Joram C; Jungermann L; Kapusta F; Katsanevas S; Katsoufis E; Kernel G; Kersevan BP; Kerzel U; King BT; Kjaer NJ; Kluit P; Kokkinias P; Kourkoumelis C; Kouznetsov O; Krumstein Z; Kucharczyk M; Lamsa J; Leder G; Ledroit F; Leinonen L; Leitner R; Lemonne J; Lepeltier V; Lesiak T; Liebig W; Liko D; Lipniacka A; Lopes JH; Lopez JM; Loukas D; Lutz P; Lyons L; MacNaughton J; Malek A; Maltezos S; Mandl F; Marco J; Marco R; Marechal B; Margoni M; Marin JC; Mariotti C; Markou A; Martinez-Rivero C; Masik J; Mastroyiannopoulos N; Matorras F; Matteuzzi C; Mazzucato F; Mazzucato M; McNulty R; Meroni C; Migliore E; Mitaroff W; Mjoernmark U; Moa T; Moch M; Moenig K; Monge R; Montenegro J; Moraes D; Moreno S; Morettini P; Mueller U; Muenich K; Mulders M; Mundim L; Murray W; Muryn B; Myatt G; Myklebust T; Nassiakou M; Navarria F; Nawrocki K; Nicolaidou R; Nikolenko M; Oblakowska-Mucha A; Obraztsov V; Olshevski A; Onofre A; Orava R; Osterberg K; Ouraou A; Oyanguren A; Paganoni M; Paiano S; Palacios JP; Palka H; Papadopoulou TD; Pape L; Parkes C; Parodi F; Parzefall U; Passeri A; Passon O; Peralta L; Perepelitsa V; Perrotta A; Petrolini A; Piedra J; Pieri L; Pierre F; Pimenta M; Piotto E; Podobnik T; Poireau V; Pol ME; Polok G; Pozdniakov V; Pukhaeva N; Pullia A; Rames J; Read A; Rebecchi P; Rehn J; Reid D; Reinhardt R; Renton P; Richard F; Ridky J; Rivero M; Romero A; Ronchese P; Roudeau P; Rovelli T; Ruhlmann-Kleider V; Ryabtchikov D; Sadovsky A; Salmi L; Salt J; Sander C; Savoy-Navarro A; Schwickerath U; Segar A; Sekulin R; Siebel A; Sisakian A; Smadja G; Smirnova O; Sokolov A; Sopczak A; Sosnowski R; Spassov T; Stanitzki A; Stocchi A; Strauss J; Stugu B; Szczekowski M; Szeptycka M; Szumlak T; Tabarelli T; Taffard AC; Tegenfeldt F; Timmermans J; Tkatchev L; Tobin M; Todorovova S; Tome B; Tonazzo A; Tortosa P; Travnicek P; Treille D; Tristram G; Trochimczuk M; Troncon C; Turluer AL; Tyapkin IA; Tyupkin P; Tzamarias S; Uvarov V; Valenti G; Van Dam P; Van Eldik J; van Remortel N; Van Vulpen I; Vegni G; Veloso F; Venus W; Verdier P; Verzi V; Vilanova D; Vitale L; Vrba V; Wahlen H; Washbrook AJ; Weiser C; Wicke D; Wickens J; Wilkinson G; Winter M; Witek A; Yushchenko O; Zalewska A; Zalewski P; Zavrtanik D; Zhuravlov V; Zimin NI; Zintchenko A; Zupan M
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