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Radiative τ pair production and search for new particles decaying into τ

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Zeitschrift für Physik C Particles and Fields

Abstract

A study of radiative τ pair production,e + e −→τ+τ−γ ande + e −→τ+τ−γγ, is presented. The observed events agree with QED predictions of order α3 and α4. Excited τ′s have been searched for and lower limits on single and pair production are obtained. For QED-like coupling the τ* mass is limited to values greater than 40 GeV (95% CL). A search for unstable charged scalars (S ±) decaying into τ, e.g. charged Higgs, technipions or the supersymmetric partners of τ′s, yields no evidence for such particles. Assuming a branching fraction ofB(S→τν)=1,S masses up to 18.7 GeV are excluded with 95% CL.

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Author information

Author notes

  1. P. Laurikainen

    Present address: University of Helsinki, Helsinki, Finland

  2. N. Magnussen & D. Schmidt

    Present address: Universität-Gesamthochschule Wuppertal, Wuppertal, Germany

  3. A. Petersen

    Present address: SLAC, California, USA

  4. S. R. Wagner

    Present address: University of Colorado, Boulder, CO, USA

Authors and Affiliations

  1. Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Germany

    W. Bartel, L. Becker, R. Felst, D. Haidt, G. Knies, H. Krehbiel, P. Laurikainen, N. Magnussen, R. Meinke, B. Naroska, J. Olsson & D. Schmidt

  2. II. Institut für Experimentalphysik der Universität, D-2000, Hamburg, Germany

    G. Dietrich, J. Hagemann, G. Heinzelmann, H. Kado, C. Kleinwort, M. Kuhlen, A. Petersen, R. Ramcke, U. Schneekloth & G. Weber

  3. Physikalisches Institut der Universität, D-6900, Heidelberg, Germany

    K. Ambrus, S. Bethke, A. Dieckmann, E. Elsen, J. Heintze, K. -H. Hellenbrand, S. Komamiya, J. von Krogh, P. Lennert, H. Matsumura, H. Rieseberg, J. Spitzer & A. Wagner

  4. University of Lancaster, LA1 4YB, Lancaster, UK

    C. K. Bowdery, A. J. Finch, F. Foster, G. Hughes & J. M. Nye

  5. University of Manchester, M13 9PL, Manchester, UK

    J. Allison, R. J. Barlow, J. Chrin, I. P. Duerdoth, T. Greenshaw, F. K. Loebinger, A. A. Macbeth, H. E. Mills, P. G. Murphy, K. Stephens & P. Warming

  6. University of Maryland, 20742, College Park, MD, USA

    R. G. Glasser, P. Hill, J. A. J. Skard, S. R. Wagner & G. T. Zorn

  7. Rutherford Appleton Laboratory, Chilton, OX10 0QX, Didcot, UK

    S. L. Cartwright, D. Clarke, R. Marshall & R. P. Middleton

  8. International Center for Elementary Particle Physics, University of Tokyo, Tokyo, Japan

    K. Kawagoe, T. Mashimo, T. Takeshita & S. Yamada

  9. University of Helsinki, Helsinki, Finland

    P. Steffen

Authors
  1. W. Bartel
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  2. L. Becker
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  3. R. Felst
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  4. D. Haidt
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  5. G. Knies
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  6. H. Krehbiel
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  7. P. Laurikainen
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  8. N. Magnussen
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  9. R. Meinke
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  10. B. Naroska
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  11. J. Olsson
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  12. D. Schmidt
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  13. P. Steffen
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  14. G. Dietrich
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  15. J. Hagemann
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  16. G. Heinzelmann
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  17. H. Kado
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  18. C. Kleinwort
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  19. M. Kuhlen
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  20. A. Petersen
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  21. R. Ramcke
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  22. U. Schneekloth
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  23. G. Weber
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  24. K. Ambrus
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  25. S. Bethke
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  26. A. Dieckmann
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  27. E. Elsen
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  28. J. Heintze
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  29. K. -H. Hellenbrand
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  30. S. Komamiya
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  31. J. von Krogh
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  32. P. Lennert
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  33. H. Matsumura
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  35. J. Spitzer
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  36. A. Wagner
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  37. C. K. Bowdery
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  38. A. J. Finch
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  39. F. Foster
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  40. G. Hughes
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  41. J. M. Nye
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  42. J. Allison
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  43. R. J. Barlow
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  44. J. Chrin
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  45. I. P. Duerdoth
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  46. T. Greenshaw
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  51. K. Stephens
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  57. G. T. Zorn
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  65. S. Yamada
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JADE Collaboration., Bartel, W., Becker, L. et al. Radiative τ pair production and search for new particles decaying into τ. Z. Phys. C - Particles and Fields 31, 359–365 (1986). https://doi.org/10.1007/BF01588032

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  • DOI: https://doi.org/10.1007/BF01588032

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