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Spin parity analysis of the decay τ→νρπ

  • Published:
Zeitschrift für Physik C Particles and Fields

Abstract

We have studied the τ→νρ 0 π decay in data taken with the PLUTO detector at the DORISe + e − storage ring, at CM energies from 4 to 5 GeV. We have found 27 events with the τ→νρ 0 π decay mode corresponding to a branching ratio ofB=(5.4±1.7)%. The Dalitz plot and theρ 0 π mass spectrum are analysed for the ρπ partial wave and spin state. Only theρ 0 π s-wave as produced by the axial vector current gives a good description. Theρ 0 π mass spectrum is suggestive of anA 1 resonance. An upper limit on τ±→vπ ± π + π − withoutρ 0 formation is given.

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Author notes

  1. W. Wagner & J. Bürger

    Present address: Deutsches Elektronen-Synchrotron DESY, Hamburg, D-2000, Hamburg, Federal Republic of Germany

  2. G. Alexander

    Present address: Tel-Aviv University, Ramat Aviv, Tel-Aviv, Israel

  3. Th. Kahl

    Present address: MPI für Physik und Astrophysik, München, Federal Republic of Germany

  4. V. Blobel

    Present address: CERN, Geneva, Switzerland

  5. A. F. Garfinkel

    Present address: Purdue University, 47907, Lafayette, IN, USA

  6. K. Wacker

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

  7. R. Devenish

    Present address: Oxford University, Oxford, UK

Authors and Affiliations

  1. I. Physikalisches Institut der RWTH Aachen, D-5100, Aachen, Federal Republic of Germany

    W. Wagner

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

    G. Alexander, L. Criegee, H. C. Dehne, R. Devenish, G. Flügge, J. D. Fox, G. Franke, Ch. Gerke, E. Hackmack, P. Harms, Th. Kahl, G. Knies, E. Lehmann, R. Schmitz, U. Timm, P. Waloschek, G. G. Winter, W. Zimmermann, H. Meyer & M. Rössler

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

    V. Blobel, A. F. Garfinkel, B. Koppitz & W. Lührsen

  4. Gesamthochschule Siegen, D-5900, Siegen, Federal Republic of Germany

    A. Bäcker, J. Bürger, K. Derikum & C. Grupen

  5. Gesamthochschule Wuppertal, D-5600, Wuppertal, Federal Republic of Germany

    K. Wacker

Authors
  1. W. Wagner
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  2. G. Alexander
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  3. L. Criegee
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  4. H. C. Dehne
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  5. R. Devenish
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  6. G. Flügge
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  7. J. D. Fox
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  8. G. Franke
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  9. Ch. Gerke
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  10. E. Hackmack
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  11. P. Harms
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  12. Th. Kahl
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  13. G. Knies
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  14. E. Lehmann
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  15. R. Schmitz
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  16. U. Timm
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  17. P. Waloschek
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  18. G. G. Winter
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  19. W. Zimmermann
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  20. V. Blobel
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  21. A. F. Garfinkel
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  22. B. Koppitz
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  23. W. Lührsen
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  24. A. Bäcker
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  25. J. Bürger
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  26. K. Derikum
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  27. C. Grupen
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  28. H. Meyer
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  29. M. Rössler
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  30. K. Wacker
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PLUTO Collaboration

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PLUTO Collaboration., Wagner, W., Alexander, G. et al. Spin parity analysis of the decay τ→νρπ . Z. Phys. C - Particles and Fields 3, 193–198 (1980). https://doi.org/10.1007/BF01577418

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  • DOI: https://doi.org/10.1007/BF01577418

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