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Higher-order QCD corrections to exclusive processes: The multiple scattering mechanism

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Zeitschrift für Physik C Particles and Fields

Abstract

The multiple-scattering diagram, calculated to lowest order in QCD, fits well topp elastic scattering data at larget. It is shown that higherorder QCD corrections seem to spoil this agreement: calculated as far as the insertion of two additional gluons, they give an exponential factor. This factor differs in detail from some previous conjectures. For colour-singlet bound states of quarks, the exponential factor is independent of whether or not the gluon mass is zero, unlike the case of simple quark-quark scatterin. Two régimes are considered:t ands of the same order, andt large but much less thans. Exponentiation seems to occur in both cases, but in a non-abelian theory more diagrams are important for the latter case.

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References

  1. S.J. Brodsky, G.P. Lepage: SLAC-PUB-2294

  2. A. Duncan, A.H. Mueller: Phys. Lett90B, 159 (1980)

    Google Scholar 

  3. A. Donnachie, P.V. Landshoff: Z Phys. C2, 55 and 372 (1979)

    Google Scholar 

  4. P.V. Landshoff: Phys. Rev.D10, 1024 (1974)

    Google Scholar 

  5. J.M. Cornwall, G. Tiktopoulos: Phys. Rev.D 13, 3370 (1976)

    Google Scholar 

  6. E.C. Poggio, H.R. Quinn: Phys. Rev.D12, 3279 (1975)

    Google Scholar 

  7. G. Parisi: Phys. Lett.84B, 225 (1979)

    Google Scholar 

  8. P.V. Landshoff, J.C. Polkinghorne: Phys. Lett44B, 293 (1973)

    Google Scholar 

  9. S.J. Brodsky, G.R. Farrar: Phys. Rev. Lett.31, 1153 (1973)

    Google Scholar 

  10. V.A. Matveev et al.: Lett. Nuovo Cimento7, 719 (1973)

    Google Scholar 

  11. A. Mueller: Phys. Rev.D20, 2037 (1979)

    Google Scholar 

  12. The wave functions include the propagators attached to the pion vertices; these provide sufficient damping to give this result, which would therefore apply even if the pions were pointlike.

  13. R.J. Eden et al.: The analytic S-matrix. Cambridge: University Press 1966

    Google Scholar 

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Authors and Affiliations

  1. Department of Applied Mathematics and Theoretical Physics, University of Cambridge, CB3 9EW, UK

    P. V. Landshoff & D. J. Pritchard

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  1. P. V. Landshoff
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  2. D. J. Pritchard
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Landshoff, P.V., Pritchard, D.J. Higher-order QCD corrections to exclusive processes: The multiple scattering mechanism. Z. Phys. C - Particles and Fields 6, 69–75 (1980). https://doi.org/10.1007/BF01427923

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  • DOI: https://doi.org/10.1007/BF01427923

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