Experimental studies on multijet production in e+e- annihilation at PETRA energies

W. Bartel, L. Becker, R. Felst, D. Haidt, G. Knies, H. Krehbiel, P. Laurikainen, N. Magnussen, R. Meinke, B. Naroska, J. Olsson, D. Schmidt, G. Dietrich, T. Greenshaw, J. Hagemann, G. Heinzelmann, H. Kado, C. Kleinwort, M. Kuhlen, A. PetersenR. Ramcke, U. Schneekloth, G. Weber, K. Ambrus, S. Bethke, A. Dieckmann, E. Elsen, J. Heintze, K. H. Hellenbrand, Sachio Komamiya, J. von Krogh, H. Rieseberg, H. v. d. Schmitt, L. Smolik, J. Spitzer, A. Wagner, M. Zimmer, C. K. Bowdery, A. J. Finch, F. Foster, G. Hughes, J. M. Nye, J. Allison, R. J. Barlow, J. Chrin, I. P. Duerdoth, F. K. Loebinger, A. A. Macbeth, H. E. Mills, P. G. Murphy, K. Stephens, P. Warming, R. G. Glasser, P. Hill, J. A.J. Skard, S. R. Wagner, G. T. Zorn, S. L. Cartwright, D. Clarke, R. Marshall, R. P. Middleton, K. Kawagoe, T. Mashimo, T. Takeshita, S. Yamada

Research output: Contribution to journalArticle

428 Citations (Scopus)

Abstract

Hadronic jet production by e+e--annihilation has been studied in the energy range of 14.0-46.7 GeV. The data have been analysed in terms of a cluster algorithm and other topological quantities. The results are compared with 2nd order QCD calculations which incorporate models for the fragmentation of quarks and gluons into hadrons. At the higher energies we observe more spherical and 4-jet like events than predicted by these calculations. We cannot achieve a simultaneous description of the observed 3- and 4-jet production by adjusting the strong coupling constant αs or the fragmentation parameters of the 2nd order QCD models. The observed excess of spherical events can partially be explained by the production of multi-parton events expected from higher order QCD contributions. Consequences of the presented results for the value of αs, determined in previous analyses, are discussed. QCD parton shower models, including soft gluon interference, are able to describe the observed number of spherical events.

Original languageEnglish
Pages (from-to)23-31
Number of pages9
JournalZeitschrift für Physik C Particles and Fields
Volume33
Issue number1
DOIs
Publication statusPublished - 1986 Mar 1
Externally publishedYes

Fingerprint

quantum chromodynamics
Hadrons
partons
fragmentation
energy
gluons
showers
hadrons
adjusting
quarks
interference

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Bartel, W., Becker, L., Felst, R., Haidt, D., Knies, G., Krehbiel, H., ... Yamada, S. (1986). Experimental studies on multijet production in e+e- annihilation at PETRA energies. Zeitschrift für Physik C Particles and Fields, 33(1), 23-31. https://doi.org/10.1007/BF01410449

Experimental studies on multijet production in e+e- annihilation at PETRA energies. / Bartel, W.; Becker, L.; Felst, R.; Haidt, D.; Knies, G.; Krehbiel, H.; Laurikainen, P.; Magnussen, N.; Meinke, R.; Naroska, B.; Olsson, J.; Schmidt, D.; Dietrich, G.; Greenshaw, T.; Hagemann, J.; Heinzelmann, G.; Kado, H.; Kleinwort, C.; Kuhlen, M.; Petersen, A.; Ramcke, R.; Schneekloth, U.; Weber, G.; Ambrus, K.; Bethke, S.; Dieckmann, A.; Elsen, E.; Heintze, J.; Hellenbrand, K. H.; Komamiya, Sachio; von Krogh, J.; Rieseberg, H.; v. d. Schmitt, H.; Smolik, L.; Spitzer, J.; Wagner, A.; Zimmer, M.; Bowdery, C. K.; Finch, A. J.; Foster, F.; Hughes, G.; Nye, J. M.; Allison, J.; Barlow, R. J.; Chrin, J.; Duerdoth, I. P.; Loebinger, F. K.; Macbeth, A. A.; Mills, H. E.; Murphy, P. G.; Stephens, K.; Warming, P.; Glasser, R. G.; Hill, P.; Skard, J. A.J.; Wagner, S. R.; Zorn, G. T.; Cartwright, S. L.; Clarke, D.; Marshall, R.; Middleton, R. P.; Kawagoe, K.; Mashimo, T.; Takeshita, T.; Yamada, S.

In: Zeitschrift für Physik C Particles and Fields, Vol. 33, No. 1, 01.03.1986, p. 23-31.

Research output: Contribution to journalArticle

Bartel, W, Becker, L, Felst, R, Haidt, D, Knies, G, Krehbiel, H, Laurikainen, P, Magnussen, N, Meinke, R, Naroska, B, Olsson, J, Schmidt, D, Dietrich, G, Greenshaw, T, Hagemann, J, Heinzelmann, G, Kado, H, Kleinwort, C, Kuhlen, M, Petersen, A, Ramcke, R, Schneekloth, U, Weber, G, Ambrus, K, Bethke, S, Dieckmann, A, Elsen, E, Heintze, J, Hellenbrand, KH, Komamiya, S, von Krogh, J, Rieseberg, H, v. d. Schmitt, H, Smolik, L, Spitzer, J, Wagner, A, Zimmer, M, Bowdery, CK, Finch, AJ, Foster, F, Hughes, G, Nye, JM, Allison, J, Barlow, RJ, Chrin, J, Duerdoth, IP, Loebinger, FK, Macbeth, AA, Mills, HE, Murphy, PG, Stephens, K, Warming, P, Glasser, RG, Hill, P, Skard, JAJ, Wagner, SR, Zorn, GT, Cartwright, SL, Clarke, D, Marshall, R, Middleton, RP, Kawagoe, K, Mashimo, T, Takeshita, T & Yamada, S 1986, 'Experimental studies on multijet production in e+e- annihilation at PETRA energies', Zeitschrift für Physik C Particles and Fields, vol. 33, no. 1, pp. 23-31. https://doi.org/10.1007/BF01410449
Bartel, W. ; Becker, L. ; Felst, R. ; Haidt, D. ; Knies, G. ; Krehbiel, H. ; Laurikainen, P. ; Magnussen, N. ; Meinke, R. ; Naroska, B. ; Olsson, J. ; Schmidt, D. ; Dietrich, G. ; Greenshaw, T. ; Hagemann, J. ; Heinzelmann, G. ; Kado, H. ; Kleinwort, C. ; Kuhlen, M. ; Petersen, A. ; Ramcke, R. ; Schneekloth, U. ; Weber, G. ; Ambrus, K. ; Bethke, S. ; Dieckmann, A. ; Elsen, E. ; Heintze, J. ; Hellenbrand, K. H. ; Komamiya, Sachio ; von Krogh, J. ; Rieseberg, H. ; v. d. Schmitt, H. ; Smolik, L. ; Spitzer, J. ; Wagner, A. ; Zimmer, M. ; Bowdery, C. K. ; Finch, A. J. ; Foster, F. ; Hughes, G. ; Nye, J. M. ; Allison, J. ; Barlow, R. J. ; Chrin, J. ; Duerdoth, I. P. ; Loebinger, F. K. ; Macbeth, A. A. ; Mills, H. E. ; Murphy, P. G. ; Stephens, K. ; Warming, P. ; Glasser, R. G. ; Hill, P. ; Skard, J. A.J. ; Wagner, S. R. ; Zorn, G. T. ; Cartwright, S. L. ; Clarke, D. ; Marshall, R. ; Middleton, R. P. ; Kawagoe, K. ; Mashimo, T. ; Takeshita, T. ; Yamada, S. / Experimental studies on multijet production in e+e- annihilation at PETRA energies. In: Zeitschrift für Physik C Particles and Fields. 1986 ; Vol. 33, No. 1. pp. 23-31.
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abstract = "Hadronic jet production by e+e--annihilation has been studied in the energy range of 14.0-46.7 GeV. The data have been analysed in terms of a cluster algorithm and other topological quantities. The results are compared with 2nd order QCD calculations which incorporate models for the fragmentation of quarks and gluons into hadrons. At the higher energies we observe more spherical and 4-jet like events than predicted by these calculations. We cannot achieve a simultaneous description of the observed 3- and 4-jet production by adjusting the strong coupling constant αs or the fragmentation parameters of the 2nd order QCD models. The observed excess of spherical events can partially be explained by the production of multi-parton events expected from higher order QCD contributions. Consequences of the presented results for the value of αs, determined in previous analyses, are discussed. QCD parton shower models, including soft gluon interference, are able to describe the observed number of spherical events.",
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AU - Bartel, W.

AU - Becker, L.

AU - Felst, R.

AU - Haidt, D.

AU - Knies, G.

AU - Krehbiel, H.

AU - Laurikainen, P.

AU - Magnussen, N.

AU - Meinke, R.

AU - Naroska, B.

AU - Olsson, J.

AU - Schmidt, D.

AU - Dietrich, G.

AU - Greenshaw, T.

AU - Hagemann, J.

AU - Heinzelmann, G.

AU - Kado, H.

AU - Kleinwort, C.

AU - Kuhlen, M.

AU - Petersen, A.

AU - Ramcke, R.

AU - Schneekloth, U.

AU - Weber, G.

AU - Ambrus, K.

AU - Bethke, S.

AU - Dieckmann, A.

AU - Elsen, E.

AU - Heintze, J.

AU - Hellenbrand, K. H.

AU - Komamiya, Sachio

AU - von Krogh, J.

AU - Rieseberg, H.

AU - v. d. Schmitt, H.

AU - Smolik, L.

AU - Spitzer, J.

AU - Wagner, A.

AU - Zimmer, M.

AU - Bowdery, C. K.

AU - Finch, A. J.

AU - Foster, F.

AU - Hughes, G.

AU - Nye, J. M.

AU - Allison, J.

AU - Barlow, R. J.

AU - Chrin, J.

AU - Duerdoth, I. P.

AU - Loebinger, F. K.

AU - Macbeth, A. A.

AU - Mills, H. E.

AU - Murphy, P. G.

AU - Stephens, K.

AU - Warming, P.

AU - Glasser, R. G.

AU - Hill, P.

AU - Skard, J. A.J.

AU - Wagner, S. R.

AU - Zorn, G. T.

AU - Cartwright, S. L.

AU - Clarke, D.

AU - Marshall, R.

AU - Middleton, R. P.

AU - Kawagoe, K.

AU - Mashimo, T.

AU - Takeshita, T.

AU - Yamada, S.

PY - 1986/3/1

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N2 - Hadronic jet production by e+e--annihilation has been studied in the energy range of 14.0-46.7 GeV. The data have been analysed in terms of a cluster algorithm and other topological quantities. The results are compared with 2nd order QCD calculations which incorporate models for the fragmentation of quarks and gluons into hadrons. At the higher energies we observe more spherical and 4-jet like events than predicted by these calculations. We cannot achieve a simultaneous description of the observed 3- and 4-jet production by adjusting the strong coupling constant αs or the fragmentation parameters of the 2nd order QCD models. The observed excess of spherical events can partially be explained by the production of multi-parton events expected from higher order QCD contributions. Consequences of the presented results for the value of αs, determined in previous analyses, are discussed. QCD parton shower models, including soft gluon interference, are able to describe the observed number of spherical events.

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