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A precise determination of the electroweak mixing angle from semileptonic neutrino scattering

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Zeitschrift für Physik C Particles and Fields

Abstract

The cross-section ratio of neutral-current and charged-current semileptonic interactions of muon-neutrinos on isoscalar nuclei has been measured with the result:R v=0.3093±0.0031 for hadronic energy larger than 4 GeV. From this ratio we determined the electroweak mixing angle sin2 θ W , wherem c is the charm-quark mass in GeV/c2. Comparison with direct measurements ofm w andm z determines the radiative shift of the intermediate boson mass Δr=0.077±0.025(exp.)±0.038(syst.), in agreement with the prediction. Assuming the validity of the electroweak standard theory we determined ϱ=0.990−0.013(m c −1.5)±0.009(exp.)±0.003(theor.).

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Author information

Author notes

  1. M. Baubillier

    Present address: LPNHE, Paris, France

  2. F. Grancagnolo

    Present address: Dipartimento di Fisica, Università di Napoli and INFN Sezione di Napoli, Napoli, Italy

  3. L. Lanceri

    Present address: Dipartimento di Fisica, Università di Trieste and INFN Sezione di Trieste, Trieste, Italy

  4. R. Plunckett

    Present address: Physics Department, Rockefeller University, New York, USA

  5. A. Baroncelli, C. Bosio & L. Tortora

    Present address: INFN Sezione Sanità and Istituto Superiore di Sanità, Rome, Italy

  6. L. Barone, B. Borgia, M. Diemoz, C. Dionisi, U. Dore, F. Ferroni, E. Longo, P. F. Loverre, L. Luminari, P. Monacelli, S. Morganti & F. de Notaristefani

    Present address: Dipartimento di Fisica, Università ‘La Sapienza’, and INFN Sezione di Roma, Rome, Italy

  7. C. Santoni

    Present address: Institute of Physics, University of Basel, Switzerland

  8. V. Valente

    Present address: Laboratori Nazionali INFN Frascati, Italy

Authors and Affiliations

  1. CERN, CH-1211, Geneva 23, Switzerland

    J. V. Allaby, U. Amaldi, G. Barbiellini, M. Baubillier, F. Bergsma, A. Capone, W. Flegel, F. Grancagnolo, L. Lanceri, M. Metcalf, C. Nieuwenhuis, R. Pain, J. Panman, R. Plunckett & K. Winter

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

    I. Abt, J. Aspiazu, A. Bungener, F. W. Büsser, P. D. Gall, T. Hebbeker, F. Niebergall, P. Schütt & P. Stähelin

  3. Institute for Theoretical and Experimental Physics, SU-117259, Moscow, USSR

    P. Gorbunov, E. Grigoriev, V. Khovansky & A. Rosanov

  4. Istituto Nazionale di Fisica Nucleare, I-00100, Rome, Italy

    A. Baroncelli, L. Barone, B. Borgia, C. Bosio, M. Diemoz, C. Dionisi, U. Dore, F. Ferroni, E. Longo, P. F. Loverre, L. Luminari, P. Monacelli, S. Morganti, F. de Notaristefani, C. Santoni, L. Tortora & V. Valente

Authors
  1. J. V. Allaby
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  2. U. Amaldi
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  3. G. Barbiellini
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  9. L. Lanceri
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  10. M. Metcalf
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  11. C. Nieuwenhuis
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  15. K. Winter
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  16. I. Abt
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  29. A. Baroncelli
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  31. B. Borgia
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  32. C. Bosio
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  33. M. Diemoz
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  34. C. Dionisi
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  35. U. Dore
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  36. F. Ferroni
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  37. E. Longo
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  38. P. F. Loverre
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  39. L. Luminari
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  40. P. Monacelli
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  42. F. de Notaristefani
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  43. C. Santoni
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  44. L. Tortora
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  45. V. Valente
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Consortia

CHARM Collaboration

Additional information

Supported by Bundesministerium für Forschung und Technologie, Bonn, FRG, under contract 4HH22P

On leave from absence from LPNHE, Paris, France

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CHARM Collaboration., Allaby, J.V., Amaldi, U. et al. A precise determination of the electroweak mixing angle from semileptonic neutrino scattering. Z. Phys. C - Particles and Fields 36, 611–628 (1987). https://doi.org/10.1007/BF01630598

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  • DOI: https://doi.org/10.1007/BF01630598

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