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A measurement of muon pair production ine + e − annihilation at centre of mass energies 35.0≤\(\sqrt s \)≤46.8 GeV

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Zeitschrift für Physik C Particles and Fields

Abstract

The reactione + e −→µ+µ− has been studied at centre of mass energies between 35.0 and 46.8 GeV using the TASSO detector at PETRA. We present measurements of the forward-backward charge asymmetry (A μμ) and cross section σμμ for this reaction at three energies. At 35.0 GeV we obtain a cross section relative to the QED prediction ofR μμ=σμμ/σo=0.932±0.018±0.044 andA μμ=(−10.6 +2.2−2.3 ±0.5)%. At 38.3 GeV we findR μμ=0.951±0.072 +0.063−0.057 andA μμ=(+1.7 +8.5−8.6 ±0.5)%. At 43.6 GeV we measureR μμ=0.921±0.037±0.055 andA μμ=(−17.6 +4.4−4.3 ±0.5)%. Our results are in good agreement with the predictions of the standard model. Including previous TASSO data we present improved determinations of muonic electroweak parameters. We also report on lower limits of possible contributions from contact interactions.

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Author information

Author notes

  1. B. Bock

    Present address: Krupp Atlas Elektr. GmbH, Bremen, FRG

  2. K. Genser, J. M. Pawlak & R. Walczak

    Present address: Warsaw University, Poland

  3. P. Mättig

    Present address: IPP Canada, Carleton University, Ottawa, Canada

  4. T. Kracht

    Present address: Hasylab, DESY, Hamburg, FRG

  5. C. M. Hawkes

    Present address: California Institute of Technology, Pasadena, CA, USA

  6. G. E. Forden

    Present address: SUNY Stony Brook, Stony Brook, NY, USA

  7. L. Labarga

    Present address: SLAC, Stanford, CA, USA

  8. D. Strom

    Present address: University of Chicago, Chicago, IL, USA

Authors and Affiliations

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

    W. Braunschweig, R. Gerhards, F. J. Kirschfink & H. -U. Martyn

  2. Physikalisches Institut der Universität Bonn, D-5300, Bonn, Federal Republic of Germany

    B. Bock, H. M. Fischer, H. Hartmann, J. Hartmann, E. Hilger, A. Jocksch & R. Wedemeyer

  3. H.H. Wills Physics Laboratory, University of Bristol, BS8 1TL, Bristol, UK

    B. Foster, A. J. Martin & A. J. Sephton

  4. Deutsches Elektronen-Synchrotron, DESY, D-2000, Hamburg, Federal Republik of Germany

    E. Bernardi, J. Chwastowski, A. Eskreys, K. Gather, K. Genser, H. Hultschig, P. Joos, H. Kowalski, A. Ladage, B. Löhr, D. Lüke, P. Mättig, D. Notz, J. M. Pawlak, K. -U. Pösnecker, E. Ros, D. Trines, R. Walczak & G. Wolf

  5. Institut für Physik, Universität Dortmund, D-4600, Dortmund, Federal Republic of Germany

    H. Kolanoski

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

    T. Kracht, J. Krüger, E. Lohrmann, G. Poelz & W. Zeuner

  7. Department of Physics, Imperial College, SW7 2AZ, London, UK

    J. Hassard, J. Shulman & D. Su

  8. Universidad Autónoma de Madrid, E-28049, Madrid, Spain

    F. Barreiro, L. Hervas, A. Leites, J. del Peso & M. Traseira

  9. Department of Nuclear Physics, Oxford University, OX1 3RH, Oxford, UK

    C. Balkwill, M. G. Bowler, P. N. Burrows, R. J. Cashmore, C. M. Hawkes, G. P. Heath, P. N. Ratoff, I. M. Silvester, I. R. Tomalin & M. E. Veitch

  10. Rutherford Appleton Laboratory, Chilton, OX11 0QX, Didcot, Oxon, UK

    G. E. Forden, J. C. Hart & D. H. Saxon

  11. Fachbereich Physik der Universität-Gesamthochschule Siegen, D-5900, Siegen, Federal Republic of Germany

    S. Brandt, M. Holder & L. Labarga

  12. Weizmann Institute, 76100, Rehovot, Israel

    E. Duchovni, Y. Eisenberg, U. Karshon, G. Mikenberg, A. Montag, D. Revel, E. Ronat, A. N. Wainer & G. Yekutieli

  13. Department of Physics, University of Wisconsin, 53706, Madison, WI, USA

    D. Muller, S. Ritz, D. Strom, M. Takashima, Sau Lan Wu & G. Zobernig

Authors
  1. W. Braunschweig
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  2. R. Gerhards
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  3. F. J. Kirschfink
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  4. H. -U. Martyn
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  5. B. Bock
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  6. H. M. Fischer
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  7. H. Hartmann
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  8. J. Hartmann
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  9. E. Hilger
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  10. A. Jocksch
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  11. R. Wedemeyer
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  12. B. Foster
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  13. A. J. Martin
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  14. A. J. Sephton
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  15. E. Bernardi
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  16. J. Chwastowski
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  17. A. Eskreys
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  18. K. Gather
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  19. K. Genser
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  20. H. Hultschig
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  21. P. Joos
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  22. H. Kowalski
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  23. A. Ladage
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  24. B. Löhr
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  25. D. Lüke
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  26. P. Mättig
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  27. D. Notz
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  28. J. M. Pawlak
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  29. K. -U. Pösnecker
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  30. E. Ros
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  31. D. Trines
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  32. R. Walczak
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  33. G. Wolf
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  34. H. Kolanoski
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  35. T. Kracht
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  36. J. Krüger
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  37. E. Lohrmann
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  38. G. Poelz
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  39. W. Zeuner
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  40. J. Hassard
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  41. J. Shulman
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  42. D. Su
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  43. F. Barreiro
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  44. L. Hervas
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  45. A. Leites
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  46. J. del Peso
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  47. M. Traseira
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  48. C. Balkwill
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  49. M. G. Bowler
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  50. P. N. Burrows
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  51. R. J. Cashmore
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  52. C. M. Hawkes
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  53. G. P. Heath
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  54. P. N. Ratoff
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  55. I. M. Silvester
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  56. I. R. Tomalin
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  57. M. E. Veitch
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  58. G. E. Forden
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  59. J. C. Hart
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  60. D. H. Saxon
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  61. S. Brandt
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  62. M. Holder
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  63. L. Labarga
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  64. E. Duchovni
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  65. Y. Eisenberg
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  66. U. Karshon
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  67. G. Mikenberg
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  68. A. Montag
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  69. D. Revel
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  70. E. Ronat
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  71. A. N. Wainer
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  72. G. Yekutieli
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  73. D. Muller
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  74. S. Ritz
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  75. D. Strom
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  76. M. Takashima
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  77. Sau Lan Wu
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  78. G. Zobernig
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Consortia

TASSO Collaboration

Additional information

On leave from Inst. of Nuclear Physics, Cracow, Poland

Supported by the Bundesministerium für Forschung und Technologie

Supported by the UK Science and Engineering Research Council

Supported by CAICYT

Supported by the Minerva Gesellschaft für Forschung mbH

Supported by the US Dept. of Energy, contract DE-AC02-76ER0088 by the U.S. National Science Foundation Grant no. INT-8313994 for travel

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TASSO Collaboration., Braunschweig, W., Gerhards, R. et al. A measurement of muon pair production ine + e − annihilation at centre of mass energies 35.0≤\(\sqrt s \)≤46.8 GeV. Z. Phys. C - Particles and Fields 40, 163–170 (1988). https://doi.org/10.1007/BF01555879

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  • DOI: https://doi.org/10.1007/BF01555879

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