Multihadronic events atEc.m.=29 GeV and predictions of QCD models fromEc.m.=29 GeV toEc.m.=93 GeV

• DOI: 10.1103/physrevd.37.1
• Publication Date: 2002-07-26T20:52:55Z
• Authors: A. Petersen; G. Abrams; C. E. Adolphsen; C. Akerlof; J. P. Alexander; M. Alvarez; D. Amidei; A. R. Baden; J. Ballam; B. C. Barish; T. Barklow; B. A. Barnett; J. Bartelt; D. Blockus; G. Bonvicini; A. Boyarski; J. Boyer; B. Brabson; A. Breakstone; J. M. Brom; F. Bulos; P. R. Burchat; D. L. Burke; F. Butler; F. Calvino; R. J. Cence; J. Chapman; D. Cords; D. P. Coupal; H. C. DeStaebler; D. E. Dorfan; J. M. Dorfan; P. S. Drell; G. J. Feldman; E. Fernandez; R. C. Field; W. T. Ford; C. Fordham; R. Frey; D. Fujino; K. K. Gan; G. Gidal; L. Gladney; T. Glanzman; M. S. Gold; G. Goldhaber; L. Golding; A. Green; P. Grosse-Wiesmann; J. Haggerty; G. Hanson; R. Harr; F. A. Harris; C. M. Hawkes; K. Hayes; D. Herrup; C. A. Heusch; T. Himel; M. Hoenk; R. J. Hollebeek; D. Hutchinson; J. Hylen; W. R. Innes; M. Jaffre; J. A. Jaros; I. Juricic; J. A. Kadyk; D. Karlen; J. Kent; S. R. Klein; A. Koide; W. Koska; W. Kozanecki; A. J. Lankford; R. R. Larsen; B. W. LeClaire; M. E. Levi; Z. Li; A. M. Litke; N. S. Lockyer; C. Matteuzzi; J. A. J. Matthews; D. I. Meyer; B. D. Milliken; K. C. Moffeit; L. Müller; J. Nash; M. E. Nelson; D. Nitz; H. Ogren; R. A. Ong; K. F. O’Shaughnessy; S. I. Parker; C. Peck; M. L. Perl; M. Petradza; F. C. Porter; P. Rankin; B. Richter; K. Riles; P. C. Rowson; D. R. Rust; H. F. W. Sadrozinski; T. Schaad; T. L. Schalk; H. Schellman; W. B. Schmidke; A. S. Schwarz; A. Seiden; P. D. Sheldon; J. G. Smith; A. Snyder; E. Soderstrom; D. P. Stoker; R. Stroynowski; R. Thun; G. H. Trilling; R. Tschirhart; C. de la Vaissiere; R. Van Kooten; H. Veltman; P. Voruganti; S. R. Wagner; P. Weber; A. J. Weinstein; A. Weir; S. Weisz; S. L. White; E. Wicklund; D. R. Wood; D. Y. Wu; J. M. Yelton
• Keywords: Quantum Physics; Particle and Plasma Physics; 0103 physical sciences; Molecular; Nuclear; Atomic; Nuclear & Particles Physics; 01 natural sciences; Astronomical and Space Sciences

Multihadronic e/sup +/e/sup -/ annihilation events at a center-of-mass energy of 29 GeV have been studied with both the original (PEP 5) Mark II and the upgraded Mark II detectors. Detector-corrected distributions from global shape analyses such as aplanarity, Q/sub 2/-Q/sub 1/, sphericity, thrust, minor value, oblateness, and jet masses, and inclusive charged-particle distributions including x, rapidity, p/sub perpendicular/, and particle flow are presented. These distributions are compared with predictions from various multihadron event models which use leading-logarithmic shower evolution or QCD matrix elements at the parton level and string or cluster fragmentation for hadronization. The new generation of parton-shower models gives, on the average, a better description of the data than the previous parton-shower models. The energy behavior of these models is compared to existing e/sup +/e/sup -/ data. The predictions of the models at a center-of-mass energy of 93 GeV, roughly the expected mass of the Z/sup 0/, are also presented.