Topology of hadronic e+e− annihilation events at 22 and 34 GeV CM energy
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ID: 271747
1982
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Abstract
The topology of hadronic e+e− annihilation events has been analysed using the sphericity tensor and a cluster method. Comparison with quark models including gluon bremsstrahlung yields good agreement with the data. The strong-coupling constant is determined in 1st order QCD to be αS=0.19±0.04 (stat) ± 0.04 (syst.) at 22 GeV and αS=0.16 ±0.02± 0.03 at 34 GeV. The differential cross section with respect to the energy fraction carried by the most energetic parton agrees with the prediction of QCD, but cannot be reproduced by a scalar gluon model. These results are stable against variations of the transverse momentum distribution of the fragmentation function within the quoted errors.| Reference Key |
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| Authors | H.-J. Behrend,Ch. Chen,J.H. Field,U. Gümpel,V. Schröder,H. Sindt,W.-D. Apel,S. Banerjee,J. Bodenkamp,D. Chrobaczek,J. Engler,G. Flügge,D.C. Fries,W. Fues,G. Hopp,H. Kuster,H. Müller,H. Randoll,G. Schmidt,H. Schneider,W. De Boer,G. Buschhorn,G. Grindhammer,P. Grosse-Wiesmann,B. Gunderson,C. Kiesling,R. Kotthaus,U. Kruse,H. Lierl,D. Lüers,T. Meyer,L. Moss,H. Oberlack,P. Schacht,M.-J. Schachter,A. Snyder,H. Steiner,G. Carnesecchi,A. Cordier,M. Davier,D. Fournier,J.F. Grivaz,J. Haissinski,V. Journé,A. Klarsfeld,F. Laplanche,F. Le Diberder,U. Mallik,J.-J. Veillet,A. Weitsch,R. George,M. Goldberg,B. Grossetête,F. Kapusta,F. Covacs,G. London,L. Poggioli,M. Rivoal,R. Aleksan,J. Bouchez,G. Cozzika,Y. Ducros,A. Gaidot,S. Jadach,Y. Lavagne,J. Pamela,J.P. Pansart,F. Pierre,CELLO Collaboration;H.-J. Behrend;Ch. Chen;J.H. Field;U. Gümpel;V. Schröder;H. Sindt;W.-D. Apel;S. Banerjee;J. Bodenkamp;D. Chrobaczek;J. Engler;G. Flügge;D.C. Fries;W. Fues;G. Hopp;H. Kuster;H. Müller;H. Randoll;G. Schmidt;H. Schneider;W. De Boer;G. Buschhorn;G. Grindhammer;P. Grosse-Wiesmann;B. Gunderson;C. Kiesling;R. Kotthaus;U. Kruse;H. Lierl;D. Lüers;T. Meyer;L. Moss;H. Oberlack;P. Schacht;M.-J. Schachter;A. Snyder;H. Steiner;G. Carnesecchi;A. Cordier;M. Davier;D. Fournier;J.F. Grivaz;J. Haissinski;V. Journé;A. Klarsfeld;F. Laplanche;F. Le Diberder;U. Mallik;J.-J. Veillet;A. Weitsch;R. George;M. Goldberg;B. Grossetête;F. Kapusta;F. Covacs;G. London;L. Poggioli;M. Rivoal;R. Aleksan;J. Bouchez;G. Cozzika;Y. Ducros;A. Gaidot;S. Jadach;Y. Lavagne;J. Pamela;J.P. Pansart;F. Pierre;CELLO Collaboration; |
| Journal | physics letters b |
| Year | 1982 |
| DOI | 10.1016/0370-2693(82)91266-7 |
| URL | |
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