The QED Radiative Corrections for Apol at LEP

  • Stanislaw Jadach
  • Zbigniew Wąs
Part of the NATO ASI Series book series (NSSB, volume 233)


In this paper we discuss the effects of the QED corrections on the τ polarization measurement at LEP. We discuss also how τ polarization A pol can be applied for precision tests of the Standard Model. The observables which can be constructed for this purpose and different classes of radiative corrections which affect these quantities are carefully reviewed. We compare the size of the radiative corrections with the size of expected statistical and systematic errors for A pol measurement.


Pair Production Radiative Correction Electroweak Correction Hard Photon Polarization Asymmetry 
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  1. 1.
    S. L. Glashow, Nucl. Phys. 22 (1961) 579;CrossRefGoogle Scholar
  2. 1a.
    S. Weinberg, Phys. Rev. Lett. 19 (1967) 1264;ADSCrossRefGoogle Scholar
  3. 1b.
    S. Weinberg, Phys. Rev. D5 (1972) 1412;Google Scholar
  4. 1c.
    A. Salam, in Elementary Particle Theory, ed. N. Svartholm, Stockholm, 1968, p 361.Google Scholar
  5. 2.
    W. Hollik, DESY report, DESY-88–188, December 1988, and references therein.Google Scholar
  6. 3.
    G. Altarelli et al., in Physics at LEP, CERN 86–02 (1986) Vol. 1 p. 1.Google Scholar
  7. 4.
    F. Dydak et al. ECFA Workshop on LEP 200, CERN 87–08 (1987) Vol. 1, p. 157.Google Scholar
  8. 5.
    R. Kleiss, Hard Bremsstrahlung in e + e -μ + μ - Matching Theory and Experi ment, in Physics at LEP 86–02 Vol 1 p. 153.Google Scholar
  9. 6.
    S. Jadach, J. H. Kühn, R. G. Stuart, Z. Wa̧s. Z. Phys. C38 (1988) 609;ADSGoogle Scholar
  10. 6a.
    J. H. Kühn, R. G. Stuart, Phys. Lett. B200 (1988) 360.ADSGoogle Scholar
  11. 7.
    S. Jadach, Z. Wąs, Phys. Lett. B219 (1989) 103.Google Scholar
  12. 8.
    F. Boillot and Z. Wąs, Z. Phys C43 (1989) 109.ADSGoogle Scholar
  13. 9.
    F. A. Berends and W. L. Van Neerven and G. J. H. Burgers, Nucl. Phys. B297 (1988) 249.Google Scholar
  14. 10.
    G. Burgers, “The shape and size of the Z resonance”, in “Polarization at Lep”, CERN report 88–06, eds. J. Ellis and R. Peccei, CERN, Geneva, (1988).Google Scholar
  15. 11.
    S. Jadach and B.F.L. Ward, “YFS2 -the second order monte Carlo for fermion pair production at LEP/SLC with the initial state radiation of two hard and multiple soft photons”, to appear in Computer Phys. Commun.Google Scholar
  16. 12.
    S. Jadach, Z. Wąs, “First and higher order noninterference QED radiative corrections to the charge asymmetry at the Z resonance”, 1989 Munich preprint, MPI-PAE/PTh 33/89.Google Scholar
  17. 13.
    Z. Wąs, Acta Physica Polonica B18 (1987) 12.Google Scholar
  18. 14.
    S. Jadach, B. F. L. Ward, Z. Wa̧s, R. G. S. Stuart and W. Hollik, “KORALZ the Monte Carlo program for τ and μ pair production processes at LEP/SLC”, unpublished, may be obtained form Z. Was: WASM @ CERNVM.Google Scholar
  19. 15.
    C. A. Nelson, Tests for New Physics from r spin correlation functions for Zτ + τ -A + B - X, Preprint, New York 1989, SUNY BING 1/30/89.Google Scholar
  20. 16.
    J. Kühn, F. Wagner, Nucl. Phys. B236 (1984) 16.ADSCrossRefGoogle Scholar
  21. 17.
    W. Marciano, A. Sirlin, Phys. Rev. Lett. 61 (1988) 1815.Google Scholar
  22. 18.
    S. Banjere, Phys. Rev. D34 (1986) 2080.Google Scholar
  23. 19.
    E. A. Kuraiev and V. S. Fadin, Sov. J. Nucl. Phys. 41 (1985) 466.Google Scholar
  24. 20.
    Rewiev of Particle Properties, Phys. Lett. B204 (1988) 1.Google Scholar

Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • Stanislaw Jadach
    • 1
  • Zbigniew Wąs
    • 2
  1. 1.Institute of PhysicsJagellonian UniversityKrakówPoland
  2. 2.Max Planck Institut für Physik und AstrophysikMünchen 40Germany

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