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Diffraction dissociation at the CERN pulsedpp collider at c.m. Energies of 900 and 200 GeV

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Zeitschrift für Physik C Particles and Fields

Abstract

Cross-sections for diffractive particle production and pseudorapidity distributions of the decay products of diffractive states are presented. The data were obtained with the UA 5 streamer chamber detector at the CERNpp Collider operated in a new pulsed mode yieldingpp interactions at c.m. energies of 900 and 200 GeV. Data recorded with a special trigger designed to select a sample of events enriched in single-diffractive interactions clearly favour ap t -limited fragmentation of diffractive states. The cross-section for single-diffractive particle production ϊ was found to be 7.8±0.5±1.1 mb at 900 GeV and 4.8±0.5±0.8 mb at 200 GeV (first error statistical, second systematic). From the pseudorapidity distribution of diffractive states we deduce the average number of charged particles to be 6.5±1.0 at 900 GeV and 4.1±1.1 at 200 GeV. Furthermore we report on our estimates for the cross-section of double-diffractive particle production at both Collider energies.

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Author notes

  1. I. Evangelou, N. Manthos & F. Triantis

    Present address: the University of Ioannina, Greece

  2. C. N. Booth

    Present address: CERN, Geneva, Switzerland

Authors and Affiliations

  1. Physikalisches Institut der Universität, D-5300, Boon, Federal Republic of Germany

    L. Burow, A. Drees, B. Eckart, C. Geich-Gimbel, B. Holl, R. Hospes, W. Pelzer & H. Schmickler

  2. Inter-University Institute for High Energies (ULB-VUB), B-1050, Brussels, Belgium

    J. Gaudean, D. P. Johnson, L. Van hamme & G. Wilquet

  3. Cavendish Laboratory, Department of Physics, University, CB3 OHE, Cambridge, UK

    R. E. Ansorge, C. N. Booth, R. S. De Wolf, D. J. Munday, J. E. V. Ovens, J. G. Rushbrooke, C. P. Ward, D. R. Ward, C. J. S. Webber & T. O. White

  4. CERN, CH-1211, Geneva 23, Switzerland

    I. Evangelou, N. Manthos & F. Triantis

  5. Institute of Physics, University, S-11346, Stockholm, Sweden

    B. Åsman, P. Carlson, G. Ekspong, C. Fuglesang, K. Jon-And, F. Lotse, C. Walck & N. Yamdagni

Authors
  1. R. E. Ansorge
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  2. B. Åsman
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  4. L. Burow
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  5. P. Carlson
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  6. R. S. De Wolf
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  7. A. Drees
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  8. B. Eckart
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  9. G. Ekspong
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  10. I. Evangelou
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  13. C. Geich-Gimbel
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  14. B. Holl
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  15. R. Hospes
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  16. K. Jon-And
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  18. F. Lotse
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  19. N. Manthos
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  20. D. J. Munday
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  21. J. E. V. Ovens
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  22. W. Pelzer
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  23. J. G. Rushbrooke
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  24. H. Schmickler
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  25. F. Triantis
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  26. L. Van hamme
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  29. D. R. Ward
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  30. C. J. S. Webber
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  31. T. O. White
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  33. N. Yamdagni
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UA 5 Collaboration., Ansorge, R.E., Åsman, B. et al. Diffraction dissociation at the CERN pulsedpp collider at c.m. Energies of 900 and 200 GeV. Z. Phys. C - Particles and Fields 33, 175–185 (1986). https://doi.org/10.1007/BF01411134

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  • DOI: https://doi.org/10.1007/BF01411134

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