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Particle distribution in 3-jet events produced bye − e −-annihilation

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Zeitschrift für Physik C Particles and Fields

Abstract

We have studied the distribution of particles within and between jets of 3-jet final states produced in the reactione + e −→hadrons at c.m. energies of 22 GeV and 29–36.4 GeV. The lowest energy jet shows distributions of transverse momenta, particle flow, and energy flow which differ significantly from those of the other two jets and from jets of 2-jet events atE cm=14 GeV. First order QCD calculations with subsequent fragmentation of quarks and gluons into hadrons indicate that the lowest energy jet has the largest probability of originating from a gluon. To reproduce the observed differences in an independent parton fragmentation model, the secondary quarks of a gluon jet have to have higher transverse momenta and lower parallel momenta than those of a quark jet. The particle densities between the jets as well as the correlation of transverse and longitudinal momenta of the particles within the jets favour models with fragmentation along the colour axes.

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Author information

Author notes

  1. R. Eichler

    Present address: Labor f. Hochenergiephysik der ETH-Zürich, Villigen, Switzerland

  2. G. Dietrich

    Present address: SLAC, California, USA

  3. A. Bell

    Present address: British Petroleum, London, England

Authors and Affiliations

  1. Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany

    W. Bartel, L. Becker, C. Bowdery (European Science Exchange Fellow), D. Cords, R. Eichler, R. Felst, D. Haidt, H. Krehbiel, B. Naroska, J. Olsson, P. Steffen & P. Warming

  2. II. Institut f. Experimentalphysik der Universität, D-2000, Hamburg, Federal Republic of Germany

    G. Dietrich, G. Heinzelmann, H. Kado, K. Meier, A. Petersen, U. Schneekloth & G. Weber

  3. Physikalisches Institut der Universität, D-6900, Heidelberg, Federal Republic of Germany

    S. Bethke, A. Dieckmann, J. Heintze, K. H. Hellenbrand, R. D. Heuer, S. Komamiya, J. von Krogh, P. Lennert, H. Matsumura, H. Rieseberg, J. Spitzer & A. Wagner (Heisenberg Foundation Fellow)

  4. University, Lancaster, England

    A. Bell, A. Finch, F. Foster, G. Hughes, T. Nozaki & H. Wriedt

  5. University, M13 9PL, Manchester, England

    J. Allison, J. Baines, A. H. Ball, R. J. Barlow, J. Chrin, I. P. Duerdoth, I. Glendinning, F. K. Loebinger, A. A. Macbeth, H. McCann, H. E. Mills, P. G. Murphy, P. G. Rowe & K. Stephens

  6. Rutherford Appleton Laboratories, Chilton, OX11 0QX, Didcot, Oxon, England

    D. Clarke, R. Marshall, G. F. Pearce & J. B. Whittaker

  7. Lab. of Int. Coll. on Elementary Particle Physics and Department of Physics, University of Tokyo, Japan

    J. Kanzaki, T. Kawamoto, T. Kobayashi, M. Koshiba, M. Minowa, M. Nozaki, S. Odaka, S. Orito, A. Sato, H. Takeda, T. Takeshita, Y. Totsuka & S. Yamada

  8. SLAC, California, USA

    E. Elsen

Authors
  1. W. Bartel
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  2. L. Becker
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  3. C. Bowdery
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  4. D. Cords
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  5. R. Eichler
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  6. R. Felst
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  7. D. Haidt
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  8. H. Krehbiel
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  9. B. Naroska
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  10. J. Olsson
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  11. P. Steffen
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  12. P. Warming
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  13. G. Dietrich
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  14. E. Elsen
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  15. G. Heinzelmann
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  16. H. Kado
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  17. K. Meier
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  18. A. Petersen
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  19. U. Schneekloth
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  20. G. Weber
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  21. S. Bethke
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  22. A. Dieckmann
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  23. J. Heintze
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  24. K. H. Hellenbrand
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  26. S. Komamiya
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  27. J. von Krogh
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  28. P. Lennert
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  29. H. Matsumura
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  30. H. Rieseberg
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  31. J. Spitzer
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  32. A. Wagner
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  33. A. Bell
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  34. A. Finch
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  35. F. Foster
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  36. G. Hughes
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  37. T. Nozaki
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  38. H. Wriedt
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  39. J. Allison
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  40. J. Baines
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  41. A. H. Ball
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  42. R. J. Barlow
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  43. J. Chrin
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  44. I. P. Duerdoth
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  45. I. Glendinning
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  46. F. K. Loebinger
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  51. P. G. Rowe
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  52. K. Stephens
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  53. D. Clarke
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  54. R. Marshall
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  57. J. Kanzaki
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  58. T. Kawamoto
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  59. T. Kobayashi
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  60. M. Koshiba
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  61. M. Minowa
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  62. M. Nozaki
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  63. S. Odaka
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  64. S. Orito
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  65. A. Sato
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  69. S. Yamada
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JADE Collaboration., Bartel, W., Becker, L. et al. Particle distribution in 3-jet events produced bye − e −-annihilation. Z. Phys. C - Particles and Fields 21, 37–52 (1983). https://doi.org/10.1007/BF01648774

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  • DOI: https://doi.org/10.1007/BF01648774

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