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Transverse momentum distribution in Pomeron-Pomeron collisions at the CERN ISR

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Zeitschrift für Physik C Particles and Fields

Abstract

Proton-proton interactions which result in a central cluster of massM x and two quasi-elastically scattered protons are generally described by Pomeron-Pomeron scattering. A study of this process at ISR energies with the Split Field Magnet detector is carried out in terms of transverse momentum behaviour for the centrally produced system of particles. The inclusivep T distribution for central hadrons is measured up to 3 GeV/c. Forp T <1.2 GeV/c, thep T distribution is exponential. Using a subsample of exclusive events, this exponential shape is shown to originate from a phase-space-like decay ofM x when convoluted with a transverse component of the pomeron momentum. In the highp T range, the shape of thep T distribution strongly depends on Feynman-x of the scattered protons in a way that can be described by hard parton scattering.

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Author notes

  1. A. Breakstone

    Present address: Department of Physics, University of Hawaii, USA

  2. H. Frehse

    Present address: CDC, Zürich, Switzerland

  3. W. Geist

    Present address: LBL, Berkeley, California, USA

  4. M. Heiden

    Present address: DEC, Kaufbeuren, FRG

  5. W. Herr

    Present address: CERN, Geneva, Switzerland

  6. T. Nakada

    Present address: SIN, Villigen, Switzerland

  7. M. Panter

    Present address: University of Heidelberg, FRG

  8. R. Yeung

    Present address: University of California, Los Angeles, USA

Authors and Affiliations

  1. Ames Laboratory and Physics Department, Iowa State University, 50011, Ames, IA, USA

    A. Breakstone, H. B. Crawley, A. Firestone, M. S. Gorbics, L. D. Isenhower, J. W. Lamsa & W. T. Meyer

  2. Dipartimento di Fisica dell'Università and INFN, I-40126, Bologna, Italy

    R. Campanini, M. Cuffiani, M. M. Deninno, F. Fabbri, G. Giacomelli, F. Rimondi & G. P. Siroli

  3. European Organization for Nuclear Research, CERN, CH-1211, Geneva 23, Switzerland

    G. M. Dallavalle, D. Drijard, H. G. Fischer, H. Frehse, W. Geist, M. Gorski, M. Heiden, T. Lohse, M. Panter, O. Ullaland & R. Yeung

  4. Institut für Physik der Universität, D-4600, Dortmund, Federal Republic of Germany

    R. Mankel, K. Rauschnabel, M. Schmelling & D. Wegener

  5. Institut für Hochenergiephysik der Universität, D-6900, Heidelberg, Federal Republic of Germany

    H. Flöge, L. Geßwein, P. Hanke, W. Herr, E. E. Kluge, T. Nakada, A. Putzer & B. Rensch

  6. University and Institute of Nuclear Studies, Warsaw, Poland

    K. Doroba, R. Gokieli, R. Sosnowski & M. Szczekowski

Authors
  1. A. Breakstone
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  2. R. Campanini
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  3. H. B. Crawley
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  4. M. Cuffiani
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  5. G. M. Dallavalle
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  6. M. M. Deninno
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  7. K. Doroba
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  8. D. Drijard
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  9. F. Fabbri
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  10. A. Firestone
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  11. H. G. Fischer
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  12. H. Flöge
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  13. H. Frehse
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  14. W. Geist
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  15. L. Geßwein
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  16. G. Giacomelli
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  17. R. Gokieli
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  18. M. S. Gorbics
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  19. M. Gorski
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  20. P. Hanke
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  21. M. Heiden
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  22. W. Herr
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  23. L. D. Isenhower
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  24. E. E. Kluge
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  25. J. W. Lamsa
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  26. T. Lohse
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  27. R. Mankel
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  28. W. T. Meyer
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  29. T. Nakada
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  30. M. Panter
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  31. A. Putzer
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  32. K. Rauschnabel
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  33. B. Rensch
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  34. F. Rimondi
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  35. M. Schmelling
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  36. G. P. Siroli
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  37. R. Sosnowski
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  38. M. Szczekowski
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  39. O. Ullaland
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  40. D. Wegener
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  41. R. Yeung
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ABCDHW Collaboration., Breakstone, A., Campanini, R. et al. Transverse momentum distribution in Pomeron-Pomeron collisions at the CERN ISR. Z. Phys. C - Particles and Fields 40, 41–47 (1988). https://doi.org/10.1007/BF01559716

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  • DOI: https://doi.org/10.1007/BF01559716

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