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Test of Quantum Electrodynamics at high momentum transfers

Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 143)

Abstract

The present PETRA experiments on Bhabha scattering, lepton-pair production and two-photon annihilation are consistent with exact QED up to ]q2I ≈ 1000 GeV2. Lower bounds on the cut-off parameters Λ exceed 100 GeV which is equivalent to tests of QED down to distances < 2 · 10-1a cm. Electro-weak interference effects become sizeable at the highest PETRA energies. Further tests of QED up to LEP energies are desirable and not impossible, providing weak effects are properly isolated. The two-photon annihilation process is particularly well suited for such studies, since Zoγ interference is absent here in first order perturbation theory:

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References

  1. ( 1).
    R. Hofstadter, Proc. 1975 Int. Symposium on Lepton and Photon Interactions at High Energies, Stanford, USA, 1975, p. 869Google Scholar
  2. ( 2).
    J.E. Augustin et al., Phys. Rev. Lett. 34 (1975) 233CrossRefGoogle Scholar
  3. ( 2a).
    T. Himel et al., Phys. Rev. Lett. 41 (1978) 449CrossRefGoogle Scholar
  4. ( 2b).
    B.L. Beron et al., Phys. Rev. D17 (1978) 2187 and 2839Google Scholar
  5. ( 3).
    W. Bartel et al. (JADE Coll.), DESY-rep. 80/14 (1980), to be published, and P. Dittmann, private communicationGoogle Scholar
  6. ( 4).
    D.P. Barber et al. (MARK J Coll.), Phys. Rev. Lett. 43 (1979) 1915 and J. Bron, private communicationCrossRefGoogle Scholar
  7. ( 5).
    Ch. Berger et al. (PLUTO Coll.), DESY-rep. 80/01 (1980) and 80/35 (1980), to be publishedGoogle Scholar
  8. ( 6).
    R. Brandelik et al. (TASSO Coll.), DESY-rep. 80/33 (1980), to be publishedGoogle Scholar
  9. ( 7).
    Ch. Berger et al. (PLUTO Coll.), DESY-rep. 80/34 (1980), to be publishedGoogle Scholar
  10. ( 8).
    J. Takahashi, Nuov. Cim. 6 (1957) 370Google Scholar
  11. ( 9).
    F.E. Low, Phys. Rev. 110 (1958) 974CrossRefGoogle Scholar
  12. (10).
    N.M. Kroll, Nuov. Cim. XLV (1966) 65Google Scholar
  13. (10a).
    K. Ringhofer, H. Salecker, contributed paper 109 to the 1975 Int. Symposium on Lepton and Photon Interactions at High Energies, Stanford, USA, 1975Google Scholar
  14. (11).
    A. Litke, Harvard University Ph. D. Thesis (unpublished) 1970Google Scholar
  15. (12).
    K. Koller, T.F. Walsh, P.M. Zerwas, DESY int. rep. T-79/01 (1979)Google Scholar
  16. (13).
    S.L. Glashow, Nucl. Phys. 22 (1961) 579CrossRefGoogle Scholar
  17. (13a).
    S. Weinberg, Phys. Rev. Lett. 19 (1967) 1264Google Scholar
  18. (13b).
    A. Salam, Proc. 8th Nobel Symposium, N. Svartholm, editor, Wiley N.Y. (1968)Google Scholar
  19. (14).
    R. Budny, Phys. Lett. 55B (1975) 227Google Scholar
  20. (15).
    E.H. de Groot, D. Sch ldknecht, G.J. Gounaris, U. Bielefeld preprint B1-TP 79/37 (1979)Google Scholar
  21. (16).
    R. Marshall, talk presented at Rencontre de Moriond, 1980Google Scholar

Copyright information

© Springer-Verlag 1981

Authors and Affiliations

  • V. Hepp
    • 1
  1. 1.Universität HamburgHamburg

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