Abstract
We study the pattern of soft parton radiation in the hard annihilation processes\(e^ + e^ - \to q\bar q\gamma \) and\(e^ + e^ - \to q\bar qg\) by explicit evaluation of the cross sections for\(e^ + e^ - \to q\bar q\gamma g\) and\(e^ + e^ - \to q\bar qgg + q\bar qq\bar q\) taken care of correct normalization. We find the coherence effects as observed experimentally and discuss why these effects are not present in the usual models based onO(α 2 s ) perturbation theory with subsequent independent fragmentation.
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Recents reviews are: Sau Lan Wu: Phys. Rep. 107 (1984) 59; F. Barreiro: Fortschr. Phys. 34 (1986) 503; J. Dorfan: Proceedings of 1986 SLAC Summer Institute, Stanford, Calif. 1986, SLAC-PUB-4287, (1987); W. de Boer, SLAC-PUB-4428 (1987)
R.D. Field, R.P. Feynman: Nucl. Phys. B136 (1978) 1
P. Hoyer et al.: Nucl. Phys. B161 (1979) 1
A. Ali et al.: Phys. Lett. B93 (1980) 155
W. Bartel et al.: Z. Phys. C—Particles and Fields 21 (1983) 37; Phys. Lett. B134 (1984) 275; Phys. Lett. B157 (1985) 340
H. Aihara et al.: Z. Phys. C—Particles and Fields 28 (1985) 31; M. Althoff et al.: Z. Phys. C—Particles and Fields 29 (1985) 29
B. Anderson et al.: Phys. Rep. 97 (1983) 31 and earlier references given there
Y.I. Azimov et al.: Phys. Lett. B165 (1985) 147
H. Aihara et al.: Phys. Rev. Lett. 57 (1986) 945
P.D. Sheldon et al.: Phys. Rev. Lett. 57 (1986) 1398
F. Ould Saada et al.: DESY report 88-015 (1988) and Z. Phys. C—Particles and Fields 39 (1988) 1
G. Marchesini, B.R. Webber: Nucl. Phys. B238 (1984) 1; B.R. Webber: Nucl. Phys. B238 (1984) 492
T.D. Gottschalk: Nucl. Phys. B214 (1983) 201
R.K. Ellis, G. Marchesini, B.R. Webber: Nucl. Phys. B286 (1987) 643 and the earlier literature given there
See for example: T. Sjöstrand: Comput. Phys. Commun. 27 (1982) 243; 28 (1983) 229; Z. Phys. C—Particles and Fields 26 (1984) 93
K. Fabricius et al.: Z. Phys. C—Particles and Fields 11 (1982) 315
A. Ali et al.: Nucl. Phys. B167 (1980) 454: J.G. Körner et al.: Nucl. Phys. B185 (1981) 365; R.K. Ellis et al.: Nucl. Phys. B178 (1981) 421
G. Kramer, B. Lampe: DESY report 86-119 (1986) (unpublished) to be published in Fortschr. Phys.
G. Kramer: Springer Tracts in Modern Physics, Vol. 162. Berlin, Heidelberg, New York: Springer 1984
W. Bartel et al.: Z. Phys. C—Particles and Fields 33 (1986) 23
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Supported by Bundesministerium für Forschung und Technologie, 05 4HH 92P/3, Bonn, FRG
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Kramer, G., Schuler, G.A. Perturbative QCD coherence ine + e − annihilation. Z. Phys. C - Particles and Fields 41, 467–474 (1988). https://doi.org/10.1007/BF01585632
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DOI: https://doi.org/10.1007/BF01585632