QCD studies in e+e− annihilation from 30 GeV to 189 GeV

Maurizio Acciarri,Pablo Achard, Oscar S. Adriáni,M. Aguilar-Benítez,Juan Alcaraz,G. Alemanni,Jim V. Allaby,Alberto Aloisio,M. G. Alviggi, Giovanni Ambrosi,Hans B. Anderhub,V. P. Andreev,Tatiana Angelescu,F. Anselmo,A. S. Arefiev,Tofigh Azemoon,T. Aziz,Paolo Bagnaia,A. Bajo,László A. Baksay,A. Balandras,S. V. Baldew,Sw W. Banerjee,Artur Barczyk,R. Barillère,Luciano M. Barone,Paolo Bartalini,Maurizio Basile, Roberto Battiston,Aurelio Bay,Francesco Becattini,Ulrich J. Becker,F. Behner,Luca Bellucci,Ross I. Berbeco,J. Berdugo,P. Berges,Bruna Bertucci,Botio L. Betev,Satyaki R. Bhattacharya,Maurizio Biasini,Adrian Biland,JJ J. Blaising,S. C. Blyth,GJ J. Bobbink, Albrecht Böhm,László Boldizsár,Bruno Borgia,Dimitri Bourilkov,Maurice H. Bourquin,Stefano Braccini,James G. Branson,Vuko Brigljević,Frederic M. Brochu,A. Buffini,A. Buijs,Joseph D. Bürger,William J. Burger,Xu Cai,Mario Campanelli,Michael Capell,G. Cara Romeo,Gianpaolo P. Carlino,Annamaria M. Cartacci,Jorge Casaus, Guido Castellini,Francesca Cavallari,Nicola Cavallo,Claudia Cecchi, M. Cerrada,F. Cesaroni,M. Chamizo Chamizo,Yun Chang,U. K. Chaturvedi,M. Chemarin,Augustine E. Chen,Guomeng Chen, Guoming Chen,Hui Chen,Hesheng Chen,G. V. Chiefari,Luisa Cifarelli,Federico Cindolo,Carlo Civinini,I. Clare,Robert M. Clare,Guy G. Coignet, N. Colino,Silvia Costantini,F. Cotorobai,Begoña De La Cruz,Ákos Csilling,Susanna Cücciarelli,Tiesheng Dai,J. A. Van Dalen, Raffaello D'Alessandro, Riccardo De Asmundis,P. Déglon,A. Degré, K. Deiters, D. Della Volpe,E. Delmeire,Peter Denes,Francesco De Notaristefani,Alessandro De Salvo,Marcella Diemoz,Mark Dierckxsens,D. van Dierendonck,Francesca Di Lodovico,Carla Dionisi,Michael Dittmar,Aaron Domínguez,Alessandra Doria,María Teresa Dova,Dominique Duchesneau,D. Dufournaud,Pieter Duinker,Ignacio Durán,Houmani El Mamouni,Arnold Engler,FJ J. Eppling,F. C. Erné,P. Extermann,M. Fabre,Riccardo Faccini,M. A. Falagán,Speranza Falciano,A. Favara, J. Fay,Oleg L. Fedin,Marta Felcini,T. Ferguson, Fernando Ferroni,Harm S. Fesefeldt,Emanuele Fiandrini,John H. Field,Frank Filthaut,PH H. Fisher,Ian M. Fisk,G. Forconì,Kai Freüdenreich,Claudio Furetta,Yu U. Galaktionov,Som N. Ganguli,Pablo García-Abia,Marat Gataullin,S. S. Gau,Simonetta Gentile,N. Gheordanescu, Stefano Giagu,Zhufang Gong,Gérald J. Grenier,Oliver Grimm,M. W. Gruenewald,Maurizio Guida,R. Van Gulik,VK K. Gupta,Atul Gurtu,LJ J. Gutay,Daniel Haas,Asma T. Hasan,Despoina Hatzifotiadou, Thomas Hebbeker,Alain E. Hervé,P. Hidas,J. Hirschfelder,Hans Hofer,G. Holzner,Haffez R. Hoorani,Suen Hou,Yuan Hu, I. Iashvili,Bingnian Jin,Lawrence W. Jones,Paul De Jong,I. Josa-Mutuberría,R. A. Khan,Maninder Pal Kaur,Maria Novella Kienzle-Focacci,Dehee Kim,JinKyung Kim,Jasper Kirkby,D. D. Kiss,Wolfram K. Kittel,Alexei Klimentov,Adriaan C. König,Andreas K. Kopp,Vladimir Koutsenko,M. Kräber,Robert W. Kraemer,W. Krenz,Andreas E. Krüger,A. V. Kunin,P. Ladrón De Guevara,Imad B. Laktineh,Gregorio Landi,Kati Lassila-Perini,Michel Lebeau,Alexei I. Lebedev,Paul L G Lebrun,Pierre Lecomte,Paul R. Lecoq,Pierre Le Coultre,H. J. Lee,Jean Marc Le Goff,R. Leiste,Emanuele Leonardi,Peter M. Levtchenko,Cheng Li,S. A. Likhoded,C. H. Lin,Weiting Lin,F. L. Linde,Luca Lísta,Zhen'An Liu,Wolfgang Lohmann, Egidio Longo,Yusheng Lü,K. Lübelsmeyer,Claudio Luci,David Luckey,L. Lugnier,Lamberto Luminari,Werner Lüstermann,Wengan Ma,Manas Maity,Luca Malgeri,A. Malinin,C. Mañá,Dominique J J Mangeol, J. Mans,P. A. Marchesini,G. Marian,J. P. Martin, Frank Silvio Marzano,Kajari Mazumdar,Roger R. McNeil,Salvatore Mele,Leonardo Merola, M. Meschini,WJ J. Metzger,M. Von Der Mey,A. Mihul,H. Milcent,Giovanni Mirabelli,Joachim Mnich,Gagan B. Mohanty,Péter Molnár,Tania K. Moulik,G. S. Muanza,A. J M Muijs,B. Musicar,Marco Musy,M. Napolitano,Francesca Nessi-Tedaldi,Harvey B. Newman,T. Niessen,Aleandro Nisati,Hannelies Nowak, Giovanni C. Organtini,A. Oulianov,Carmen Palomares,D. Pandoulas,Simone Paoletti,Pierluigi S. Paolucci,Riccardo Paramatti,Heekyeong Park,Inhee Park, Giovanni Passaleva,S. Patricelli,Thomas C. Paul,M. Pauluzzi,Christoph Paus,Felicitas Paüss,M. Pedace,Simonetta Pensotti,Denis Perret-Gallix,Brian Aagaard Petersen,Davide Piccolo,Fabio Pierella,Marco Pieri,PA A. Piroué,E. Pistolesi,Vassili V. Plyaskin,Martin Pohl,V. Pojidaev,Hans Postema,J. Pothier,Denis O. Prokofiev,D. A. Prokofiev,J. Quartieri,Ghita Rahal-Callot,M. A. Rahaman,Péter Raics,N. Raja,Renzo Ramelli, P. G. Giorgio Rancoita,Alexei Raspereza,Gerhard Raven,Panos A. Razis,Daning Ren,Marco Rescigno,Stephen Reucroft,Sabine Riemann,Keith Riles,A. Robohm,Jonathan P. Rodin,Byron P. Roe,Luciano Romero,Aura Rosca,Sylvie Rosier-Lees,J. Alberto Rubio,Gennaro Ruggiero,D. Ruschmeier,Hans Rykaczewski,Saeed Saremi, Subir Sarkar,J. M. Salicio,Eusebio Sánchez,Marijn P A Sanders,Miltiadis E. Sarakinos,Christoph Schäfer,V. A. Schegelsky,S. Schmidt-Kaerst,David W. Schmitz,Herwig F. Schopper,DJ J. Schotanus, G. Schwering,C. Sciacca,D. Sciarrino,A. Seganti, Leonello Servoli,S. Shevchenko,Naiden Shivarov,V. Shoutko,E. Shumilov,A. V. Shvorob, Th Siedenburg,Dongchul Son,Bryan R. Smith,Piero Spillantini,Malcolm F. Steuer,David P. Stickland,Alan L. Stone,Basil J. Stoyanov,Arno Straessner, K. Sudhakar,G. G. Sultanov,La-Zhen Sun,Henry Suter,John D. Swain,Zoltan Szillási,T. Sztaricskai,Xiaowei Tang,Ludwig Tauscher,Lucas L. Taylor,B. Tellili,Charles J W P Timmermans.,C. C. Samuel Ting,Steve Ting,Suresh C. Tonwar,József J. Tóth,Christopher G. Tully,Karen Tung,Yoshi Uchida,Jürgen Ulbricht,Enzo Valente,Gy Vesztergombi,I. Vetlitsky,D. Vicinanza,Gert M. Viertel,Stefano Villa,M. Vivargent,Sotirios Vlachos,Igor Vodopianov,Helmut R. Vogel,Hans G. Vogt,Igor A. Vorobiev,An A. Vorobyov,A. Vorvolakos,M. Wadhwa,Wolfgang Wallraff, Meng Wang,Xiaolian Wang,Zhaomin Wang,Ainas Weber,Marc S. Weber,Peter Wienemann,Henric G S Wilkens,Shouxiang Wu,St Wynhoff,Lirong Xia,Zizong Xu,J. Yamamoto,Bin Yang,Changgen Yang,H. J. Yang,Min Yang,Jian Ye,S. C. Yeh,An N. Zalite,Yu U. Zalite,Ziping Zhang,Guoyi Zhu,Renyuan Zhu,Antonino Zichichi,Gy Zilizi,M. Z. Zöller

PHYSICS LETTERS B（2000）

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摘要

We present results obtained from a study of the structure of hadronic events recorded by the L3 detector at various centre-of-mass energies. The distributions of event shape variables and the energy dependence of their mean values are measured from 30 GeV to 189 GeV and compared with various QCD models. The energy dependence of the moments of event shape variables is used to test a power law ansatz for the non-perturbative component, We obtain a universal value of the non-perturbative parameter alpha(0) = 0.537 +/- 0.073. From a comparison with resummed O(alpha(s)(2)) QCD calculations, we determine the strong coupling constant at each of the selected energies. The measurements demonstrate the running of alpha(s) as expected in QCD with a Value of alpha(s)(m(Z)) = 0.1215 +/- 0.0012 (exp) +/- 0.0061 (th). (C) 2000 Elsevier Science B.V. All rights reserved.

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