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An impact parameter analysis of proton-proton elastic and inelastic interactions at 360 GeV/c

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Zeitschrift für Physik C Particles and Fields

Abstract

360 GeV/c proton-proton elastic scattering data obtained at the European Hybrid Spectrometer (EHS) are presented. The differential cross sections of elastic and inelasticpp-interactions are studied as a function of the impact parameter. The results are compared to those obtained at other energies. They are interpreted in the framework of a simple geometrical Monte-Carlo model of inelastic collisions considering protons as composite particles having a definite effective radius with valence quarks inside. The model calculations indicate an increase of the effective radii both of protons and of valence quarks and an increase of the proton opacity with increasing energy. Using this model a description of the overlap function for the total cross section is obtained. A mechanism involving interactions of coloured quarks is proposed leading to a splitting of the overlap function for the total cross section into elastic, inelastic and inelastic diffraction components.

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Authors and Affiliations

  1. Tata Institute of Fundamental Research, 400005, Bombay, India

    S. Banerjee & R. Raghavan

  2. Central Research Institute for Physics, Budapest, Hungary

    G. Pinter

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

    F. Bruyant, L. Montanet & G. Neuhofer

  4. Panjab University, Chandigarh, India

    J. M. Kohli & J. B. Singh

  5. Istituto di Fisica, Università di Genova and INFN, I-16100, Genova, Italy

    C. Caso, F. Fontanelli, S. Squarcia & U. Trevisan

  6. Institut für Experimental Physics, A-17-6020, Innsbruck, Austria

    D. Kuhn & K. Rasner

  7. Tokyo Metropolitain University, Setagaya, Tokyo, Japan

    R. Hamatsu, Y. Iga, S. Kitamura, A. Ohta & T. Tsurugai

  8. Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan

    K. Takahashi

  9. Junta de Energia Nuclear, E-28009, Madrid, Spain

    F. J. Diez-Hedo, A. Ferrando, T. Rodrigo & J. M. Salicio

  10. Université de l'Etat à Mons, B-7000, Mons, Belgium

    J. L. Bailly & P. Herquet

  11. Moscow State University, SU-117234, Moscow, USSR

    Yu. A. Golubkov, B. B. Levchenko & L. A. Tikhonova

  12. Institute for High Energy Physics, Serpukhov, SU-142284, Protvino, USSR

    Yu. Ivanyushenkov, N. S. Khalatyan, E. P. Kistenev, V. M. Kubik, G. V. Zholobov & M. Yu. Bogoljubski

  13. Institute for High Energy Physics, A-1050, Wien, Austria

    B. Buschbeck, H. Dibon, J. Hrubec, J. MacNaughton & P. Porth

Authors
  1. J. L. Bailly
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  2. S. Banerjee
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  3. F. Bruyant
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  4. B. Buschbeck
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  5. C. Caso
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  6. H. Dibon
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  7. F. J. Diez-Hedo
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  8. A. Ferrando
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  9. F. Fontanelli
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  10. Yu. A. Golubkov
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  11. R. Hamatsu
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  12. P. Herquet
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  13. J. Hrubec
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  14. Y. Iga
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  15. Yu. Ivanyushenkov
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  16. N. S. Khalatyan
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  17. E. P. Kistenev
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  18. S. Kitamura
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  19. J. M. Kohli
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  20. V. M. Kubik
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  21. D. Kuhn
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  22. B. B. Levchenko
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  23. J. MacNaughton
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  24. L. Montanet
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  25. G. Neuhofer
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  26. A. Ohta
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  27. G. Pinter
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  28. P. Porth
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  29. R. Raghavan
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  30. K. Rasner
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  31. T. Rodrigo
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  32. J. M. Salicio
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  33. J. B. Singh
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  34. S. Squarcia
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  35. K. Takahashi
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  36. L. A. Tikhonova
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  37. U. Trevisan
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  38. T. Tsurugai
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  39. G. V. Zholobov
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  40. M. Yu. Bogoljubski
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Consortia

EHS-RCBC Collaboration

Additional information

Chuo University, Tokyo, Japan

Hiroshima University, Hiroshima, 725 Japan

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EHS-RCBC Collaboration., Bailly, J.L., Banerjee, S. et al. An impact parameter analysis of proton-proton elastic and inelastic interactions at 360 GeV/c. Z. Phys. C - Particles and Fields 37, 7–16 (1987). https://doi.org/10.1007/BF01442063

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  • DOI: https://doi.org/10.1007/BF01442063

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