Determination of αs from hadronic event shapes in e+e- annihilation at 192 ≤ √s ≤ 208 GeV

P. Achard,O. Adriani,M. Aguilar-Benitez,J. Alcaraz,G. Alemanni,J. Allaby,A. Aloisio,M. G. Alviggi,H. Anderhub,V. P. Andreev,F. Anselmo,A. Arefiev,T. Azemoon,T. Aziz,P. Bagnaia,A. Bajo,G. Baksay,L. Baksay,S. V. Baldew,S. Banerjee,S. W. Banerjee,A. Barczyk,R. Barillère,P. Bartalini,M. Basile,N. Batalova,R. Battiston,A. Bay,F. Becattini,U. Becker,F. Behner,L. Bellucci,R. Berbeco,J. Berdugo,P. Berges,B. Bertucci,B. L. Betev,M. Biasini,M. Biglietti,A. Biland,J. J. Blaising,S. C. Blyth,G. J. Bobbink,A. Böhm,L. Boldizsar,B. Borgia,S. Bottai,D. Bourilkov,M. Bourquin,S. Braccini,J. G. Branson,F. Brochu,J. D. Burger,W. J. Burger,X. D. Cai,M. Capell,G. Cara Romeo,G. Carlino,A. Cartacci,J. Casaus,F. Cavallari,N. Cavallo,C. Cecchi,M. Cerrada,M. Chamizo,Y. H. Chang,M. Chemarin,A. Chen,G. Chen,G. M. Chen,H. F. Chen,H. S. Chen,G. Chiefari,L. Cifarelli,F. Cindolo,I. Clare,R. Clare,G. Coignet,N. Colino,S. Costantini,B. de la Cruz,S. Cucciarelli,J. A. van Dalen,R. de Asmundis,P. Déglon,J. Debreczeni,A. Degré,K. Deiters,D. della Volpe,E. Delmeire,P. Denes,F. DeNotaristefani,A. De Salvo,M. Diemoz,M. Dierckxsens,C. Dionisi,M. Dittmar,A. Doria,M. T. Dova,D. Duchesneau,B. Echenard,A. Eline,H. El Mamouni,A. Engler,F. J. Eppling,A. Ewers,P. Extermann,M. A. Falagan,S. Falciano,A. Favara,J. Fay,O. Fedin,M. Felcini,T. Ferguson,H. Fesefeldt,E. Fiandrini,J. H. Field,F. Filthaut,P. H. Fisher,W. Fisher,I. Fisk,G. Forconi,K. Freudenreich,C. Furetta,Y. Galaktionov,S. N. Ganguli,P. Garcia-Abia,M. Gataullin,S. Gentile,S. Giagu,Z. F. Gong,G. Grenier,O. Grimm,M. W. Gruenewald,M. Guida,R. van Gulik,V. K. Gupta,A. Gurtu,L. J. Gutay,D. Haas,R. S. Hakobyan,D. Hatzifotiadou, T. Hebbeker,A. Hervé,J. Hirschfelder,H. Hofer,M. Hohlmann,G. Holzner,S. R. Hou,Y. Hu,B. N. Jin,L. W. Jones,P. de Jong,I. Josa-Mutuberría,D. Käfer,M. Kaur,M. N. Kienzle-Focacci,J. K. Kim,J. Kirkby,W. Kittel,A. Klimentov,A. C. König,M. Kopal,V. Koutsenko,M. Kräber,R. W. Kraemer,W. Krenz,A. Krüger,A. Kunin,P. Ladron de Guevara,I. Laktineh,G. Landi,M. Lebeau,A. Lebedev,P. Lebrun,P. Lecomte,P. Lecoq,P. Le Coultre,J. M. Le Goff,R. Leiste,M. Levtchenko,P. Levtchenko,C. Li,S. Likhoded,C. H. Lin,W. T. Lin,F. L. Linde,L. Lista,Z. A. Liu,W. Lohmann,E. Longo,Y. S. Lu,K. Lübelsmeyer,C. Luci,L. Luminari,W. Lustermann,W. G. Ma,L. Malgeri,A. Malinin,C. Maña,D. Mangeol,J. Mans,J. P. Martin,F. Marzano,K. Mazumdar,R. R. McNeil,S. Mele,L. Merola,M. Meschini,W. J. Metzger,A. Mihul,H. Milcent,G. Mirabelli,J. Mnich,G. B. Mohanty,G. S. Muanza,A. J.M. Muijs,B. Musicar,M. Musy,S. Nagy,S. Natale,M. Napolitano,F. Nessi-Tedaldi,H. Newman,T. Niessen,A. Nisati,H. Nowak,R. Ofierzynski,G. Organtini,C. Palomares,D. Pandoulas,P. Paolucci,R. Paramatti,G. Passaleva,S. Patricelli,T. Paul,M. Pauluzzi,C. Paus,F. Pauss,M. Pedace,S. Pensotti,D. Perret-Gallix,B. Petersen,D. Piccolo,F. Pierella,M. Pioppi,P. A. Piroué,E. Pistolesi,V. Plyaskin,M. Pohl,V. Pojidaev,J. Pothier,D. O. Prokofiev,D. Prokofiev,J. Quartieri,G. Rahal-Callot,M. A. Rahaman,P. Raics,N. Raja,R. Ramelli,P. G. Rancoita,R. Ranieri,A. Raspereza,P. Razis,D. Ren,M. Rescigno,S. Reucroft,S. Riemann,K. Riles,B. P. Roe,L. Romero,A. Rosca,S. Rosier-Lees,S. Roth,C. Rosenbleck,B. Roux,J. A. Rubio,G. Ruggiero,H. Rykaczewski,A. Sakharov,S. Saremi,S. Sarkar,J. Salicio,E. Sanchez,M. P. Sanders,C. Schäfer,V. Schegelsky,S. Schmidt-Kaerst,D. Schmitz,H. Schopper,D. J. Schotanus,G. Schwering,C. Sciacca,L. Servoli,S. Shevchenko,N. Shivarov,V. Shoutko,E. Shumilov,A. Shvorob,T. Siedenburg,D. Son,P. Spillantini,M. Steuer,D. P. Stickland,B. Stoyanov,A. Straessner,K. Sudhakar,G. Sultanov,L. Z. Sun,S. Sushkov,H. Suter,J. D. Swain,Z. Szillasi,X. W. Tang,P. Tarjan,L. Tauscher,L. Taylor,B. Tellili,D. Teyssier,C. Timmermans,S. C.C. Ting,S. M. Ting,S. C. Tonwar,J. Tóth,Christopher George Tully,K. L. Tung,J. Ulbricht,E. Valente,R. T. Van de Walle,V. Veszpremi,G. Vesztergombi,I. Vetlitsky,D. Vicinanza,G. Viertel,S. Villa,M. Vivargent,S. Vlachos,I. Vodopianov,H. Vogel,H. Vogt,I. Vorobiev,A. A. Vorobyov,M. Wadhwa,W. Wallraff,X. L. Wang,Z. M. Wang,M. Weber,P. Wienemann,H. Wilkens,S. Wynhoff,L. Xia,Z. Z. Xu,J. Yamamoto,B. Z. Yang,C. G. Yang,H. J. Yang,M. Yang,S. C. Yeh,A. Zalite,Y. Zalite,Z. P. Zhang,J. Zhao,G. Y. Zhu,R. Y. Zhu,H. L. Zhuang,A. Zichichi,G. Zilizi,B. Zimmermann,M. Zöller

Physics Letters B（2002）

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摘要

Abstract Results are presented from a study of the structure of high energy hadronic events recorded by the L3 detector at s ⩾192 GeV. The distributions of several event shape variables are compared to resummed O (α s 2 ) QCD calculations. We determine the strong coupling constant at three average centre-of-mass energies: 194.4, 200.2 and 206.2 GeV. These measurements, combined with previous L3 measurements at lower energies, demonstrate the running of α s as expected in QCD and yield α s ( m Z )=0.1227±0.0012±0.0058, where the first uncertainty is experimental and the second is theoretical.

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关键词

Electron–positron annihilation,Quantum chromodynamics,Annihilation,Hadron,Event (particle physics),Particle physics,Nuclear physics,Bibliography,Yield (chemistry),Physics,Constant (mathematics)

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