Skip to main content
SpringerLink
Log in

Remarks about the counting of\(\bar vv\) generations using thee + e − →γZ 0 process

  • Published:
Zeitschrift für Physik C Particles and Fields

Abstract

In the present note we further explore the possibility of measuring the number of\(\bar vv\) generations by means of\(Z^0 \to \bar vv\) decays. We investigate in particular the case where the radiative transitionse + e − →γZ 0 are studied on theZ 0 resonance itself. The various background reactions are discussed as well as the statistical significance that can be obtained for an additional\(\bar vv\) generation.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. K.J.F. Gaemers, R. Gastmans, R.M. Renard: Phys. Rev.D19, 1605 (1979)

    Google Scholar 

  2. G. Barbiellini, B. Richter, J.L. Siegrist Phys. Lett.106B, 414 (1981)

    Google Scholar 

  3. Proceedings of the SLAC Workshop, SLAC 247 Report, March 1982, D. Coyne: private communcation

  4. S. L. Glashow: Nucl. Phys.B22, 579 (1961); S. Weinberg: Phys. Rev. Lett.19, 1264 (1967); A. Salam: Proceedings of the 8th Nobel Symposium, p. 367, May 1968, Ed. N. Svarthorm. New York: Wiley 1968

    Google Scholar 

  5. This is the type of error obtained forΓ z by fitting a Breit-Wigner function (without radiative corrections) to an experimentalZ 0 excitation curve made from 9 data points where each of the 9 cross sections have an error of 5 to 10%

  6. Crystal Ball letter of intent for the SLC, October 15, 1982; BGO Ball letter of intent for the SLC, September 30, 1982

  7. R. Budny: Phys. Lett55B, 227 (1975)

    Google Scholar 

  8. See for instance [3] Proceedings of the SLAC Workshop, SLAC 247 Report March 1982, D. Coyne: private communcation

  9. For thee + e − →γμ + μ − reaction: F.A. Berends, R. Kleiss, S. Jadach: Leiden Preprint (1982) For thee + e − →γe + e − reaction: F.A. Berends, K.J.F. Gaemers, R. Gastmans: Nucl. Phys.B57, 381 (1973):B63 381 (1973);B68, 541 (1979); the Monte Carlo program is described in F.A. Berends, R. Kleiss: Leiden Preprint (1983) For thee + e −→γγγ reaction: F.A. Berends, R. Kleiss: Nucl. Phys.B186, 22 (1981)

  10. A similar approach has been taken in [2], J.L. Siegrist: private communication

    Google Scholar 

  11. P. De Causmaecker, R. Gastmans, W. Troost, T.T. Wu: Phys. Lett.105B, 215 (1981); Nucl. Phys.B206, 53 (1982)

    Google Scholar 

Download references

Author information

Author notes

  1. A. Fridman

    Present address: Centre d'Etudes Nucléaires de Saclay, DPHPE, Gif sur Yvette, France

  2. A. Schwarz & Tai Tsun Wu

    Present address: Harvard University, Cambridge, Mass., USA

Authors and Affiliations

  1. II. Institut für Theoretische Physik der Universität, D-2000, Hamburg, Federal Republic of Germany

    J. Bartels

  2. Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany

    A. Fridman & Tai Tsun Wu

  3. I. Institut für Experimentalphysik der Universität, D-2000, Hamburg, Federal Republic of Germany

    A. Schwarz

Authors
  1. J. Bartels
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A. Fridman
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. A. Schwarz
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Tai Tsun Wu
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

Work supported in part by the Bundesministerium für Forschung und Technologie

Work supported in part by the U.S. Department of Energy, Contract No. DE-AS02-76ER03227

Rights and permissions

Reprints and permissions

About this article

Cite this article

Bartels, J., Fridman, A., Schwarz, A. et al. Remarks about the counting of\(\bar vv\) generations using thee + e − →γZ 0 process. Z. Phys. C - Particles and Fields 23, 295–300 (1984). https://doi.org/10.1007/BF01546198

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01546198

Keywords

Search

Navigation