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Asymptotic dominance of diquarks in some exclusive hard reactions

  • Bernard Pire
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 417)

Abstract

Multiple scattering processes dominate quark counting ones in hadronic exclusive reactions at large transfer. We survey currently available evidence for the importance of these processes at present energies. In the case of fixed angle MB → MB and \(B\bar B \to MM'\) reactions, this implies that dynamics selects baryons which exhibit a quark — diquark pattern.

Keywords

Elastic Scattering Multiple Scattering Fixed Angle Multiple Scatter Spin Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    see for instance D. Lichtenberg, these proceedings.Google Scholar
  2. 2.
    M. Fontannaz et al.Phys. Lett. B77, 315 (1978); J. Mulders, these proceedings.Google Scholar
  3. 3.
    M. Szczekowski, these proceedings.Google Scholar
  4. 4.
    U. Landgraf, these proceedings.Google Scholar
  5. 5.
    A review by S.J. Brodsky and G.P. Lepage may be found in Perturbative Quantum Chromodynamics, A.H. Mueller ed., World Scientific (1989).Google Scholar
  6. 6.
    S.J. Brodsky and G.R. Farrar, Phys. Rev. Lett. 31, 1153 (1973).Google Scholar
  7. 7.
    S.J. Brodsky and G.P. Lepage, Phys. Rev. D24, 2848 (1981).Google Scholar
  8. 8.
    J. Botts and G. Sterman, Nucl. Phys. B325, 62 (1989); J. Botts, Nucl. Phys. B353, 20 (1991) and Phys. Rev. D44, 2768 (1991).Google Scholar
  9. 9.
    B. Pire and J.P. Ralston, Phys. Lett. B117, 233 (1982); see also C.E. Carlson et al, College of William and Mary preprint WM92-101.Google Scholar
  10. 10.
    S.J. Brodsky and A.H. Mueller, Phys. Lett. B 206, 685 (1988) and references therein; B. Pire and J.P. Ralston, Proc. of the 5th Workshop on Perspectives in World Scientific.Google Scholar
  11. 11.
    J.P. Ralston and B. Pire, Phys. Rev. Lett. 61, 1823 (1988).Google Scholar
  12. 12.
    A.S. Carroll et al, Phys. Rev. Lett. 61, 1698 (1988).Google Scholar
  13. 13.
    M. Anselmino et al, Z. Phys. C36, 89 (1987); W. Schweiger these proceedings.Google Scholar
  14. 14.
    J.P. Ralston and B. Pire, High Energy Helicity Violation in Hard Exclusive Reactions of Hadrons, Ecole Polytechnique preprint A175.0592 (1992).Google Scholar

Copyright information

© Springer Verlag 1993

Authors and Affiliations

  • Bernard Pire
    • 1
  1. 1.Centre de Physique ThéoriqueEcole PolytechniquePalaiseau Cedex

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