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Comparison of the particle flow in\(q\bar q\gamma \) and\(q\bar qg\) events frome + e − annihilations at PETRA

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Zeitschrift für Physik C Particles and Fields

Abstract

The particle flow distributions in the event plane of 3-jet\((e^ + e^ - \to q\bar qg)\) and of radiative 2-jet\((e^ + e^ - \to q\bar q\gamma )\) events are compared at a centre of mass energy of 35 GeV. The number of particles in the angular region opposite to the gluon in\(q\bar qg\) events is found to be significantly reduced relative to the number of particles in the region opposite to the hard photon in\(q\bar q\gamma \) events. This depletion is expected from the “string effect” observed in 3-jet events. It can be explained within the framework of QCD as arising from soft gluon interference.

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Author information

Author notes

  1. S. Bethke

    Present address: LBL, Berkeley, California, USA

  2. S. L. Cartwright & U. Schneekloth

    Present address: MIT, Cambridge, Massachusetts, USA

  3. S. Komamiya

    Present address: SLAC, Stanford, California, USA

  4. N. Magnussen & D. Schmidt

    Present address: Universität-Gesamthochschule Wuppertal, Wuppertal, FRG

  5. H. E. Mills & A. Petersen

    Present address: SCS, Hamburg, FRG

  6. P. Warming

    Present address: Digitec, Hamburg, FRG

  7. K. H. Hellenbrand

    Present address: Universität des Saarlandes, Saarbrücken, FRG

Authors and Affiliations

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

    W. Bartel, L. Becker, R. Felst, D. Haidt, G. Knies, H. Krehbiel, N. Magnussen, R. Meinke, B. Naroska, J. Olsson, D. Schmidt & P. Steffen

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

    F. Ould Saada, T. Greenshaw, J. Hagemann, G. Heinzelmann, H. Kado, C. Kleinwort, M. Kuhlen, A. Petersen, R. Ramcke, H. Rieseberg, U. Schneekloth & G. Weber

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

    K. Ambrus, S. Bethke, A. Dieckmann, G. Eckerlin, E. Elsen, J. Heintze, K. H. Hellenbrand, S. Komamiya, J. v. Krogh, H. v. d. Schmitt, L. Smolik, J. Spitzer, A. Wagner & M. Zimmer

  4. University of Lancaster, LA1 4YB, Lancaster, England

    C. K. Bowdery, A. J. Finch, F. Foster, G. Hughes, J. M. Nye & I. W. Walker

  5. University of Manchester, M13 9PL, Manchester, England

    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

  6. University of Maryland, 20742, College Park, MD, USA

    P. Hill, J. A. J. Skard & G. T. Zorn

  7. Rutherford Appleton Laboratory, Chilton, OX11 0QX, Dicot, England

    S. L. Cartwright, D. Clarke, R. Marshall & R. P. Middleton

  8. International Center for Elementary Particle Physics, University of Tokyo, Tokyo, Japan

    K. Kawagoe, T. Kawamoto & M. Minowa

Authors
  1. F. Ould Saada
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  2. J. Allison
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  3. K. Ambrus
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  4. R. J. Barlow
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  5. W. Bartel
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  6. L. Becker
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  7. S. Bethke
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  8. C. K. Bowdery
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  9. S. L. Cartwright
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  10. J. Chrin
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  11. D. Clarke
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  12. A. Dieckmann
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  13. I. P. Duerdoth
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  14. G. Eckerlin
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  15. E. Elsen
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  16. R. Felst
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  17. A. J. Finch
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  18. F. Foster
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  19. T. Greenshaw
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  20. J. Hagemann
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  21. D. Haidt
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  22. J. Heintze
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  23. G. Heinzelmann
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  24. K. H. Hellenbrand
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  25. P. Hill
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  26. G. Hughes
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  27. H. Kado
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  28. K. Kawagoe
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  29. T. Kawamoto
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  30. C. Kleinwort
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  31. G. Knies
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  32. S. Komamiya
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  33. H. Krehbiel
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  34. J. v. Krogh
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  35. M. Kuhlen
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  36. F. K. Loebinger
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  37. A. A. Macbeth
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  38. N. Magnussen
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  39. R. Marshall
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  40. R. Meinke
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  41. R. P. Middleton
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  42. H. E. Mills
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  43. M. Minowa
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  44. P. G. Murphy
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  45. B. Naroska
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  46. J. M. Nye
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  47. J. Olsson
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  48. A. Petersen
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  49. R. Ramcke
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  50. H. Rieseberg
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  51. D. Schmidt
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  52. H. v. d. Schmitt
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  53. L. Smolik
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  54. U. Schneekloth
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  55. J. A. J. Skard
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  56. J. Spitzer
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  57. P. Steffen
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  58. K. Stephens
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  59. A. Wagner
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  60. I. W. Walker
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  61. P. Warming
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  62. G. Weber
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  63. M. Zimmer
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  64. G. T. Zorn
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JADE Collaboration., Ould Saada, F., Allison, J. et al. Comparison of the particle flow in\(q\bar q\gamma \) and\(q\bar qg\) events frome + e − annihilations at PETRA. Z. Phys. C - Particles and Fields 39, 1–6 (1988). https://doi.org/10.1007/BF01560384

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  • DOI: https://doi.org/10.1007/BF01560384

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