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Final results on the μ3He-capture experiment and perspectives for μ p-capture studies

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Abstract

Muon capture on hydrogen gives a unique possibility for a measurement of the pseudo-scalar form factor g p (q 2c = -0.88 m 2μ ) of the nucleonic weak current, thus providing a sensitive test of the QCD chiral symmetry perturbation theory which predicts the value of this form factor with a precision of Δg p /g p ≃ 2%. For adequate comparison with theory, the muon capture rate Λc should be measured with a precision of ΔΛc/Λc ≤ 1%, that is an order of magnitude better than the precision of the present world data. We report on the project of an experiment designed to provide the required precision. Also, we present the final result of our previous experiment on a high precision measurement of the μ3He capture rate and compare this result with the PCAC prediction.

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Authors and Affiliations

  1. Petersburg Nuclear Physics Institute, Gatchina, 188350, Russia

    A.A. Vorobyov, V.A. Andreev, D.V. Balin, A.A. Fetisov, V.A. Ganzha, A.G. Krivshich, E.M. Maev, G.E. Petrov, G.N. Schapkin, G.G. Semenchuk, Yu.V. Smirenin & N.I. Voropaev

  2. Austrian Academy of Sciences, A-1090, Vienna, Austria

    P. Ackerbauer, W.H. Breunlich, B. Lauss, J. Marton & W. Prymas

  3. Institute of Nuclear Physics, 31-342, Krakow, Poland

    A. Adamczak

  4. University of Victoria, Victoria, B.C., Canada, V8W 2Y2

    G.A. Beer

  5. University of California and Lawrence Berkeley Laboratory, Berkeley, CA, 94720, USA

    T. Case, K.M. Crowe, P. Kammel & M. Mühlbauer

  6. Physik Department, Technische Universität München, D-85748, Garching, Germany

    H. Daniel, T. von Egidy, F.J. Hartmann & W. Schott

  7. Université Catholique de Louvain, B-1348 Louvain-La-, Neuve, Belgium

    J. Deutsch, J. Govaerts & R. Prieels

  8. Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland

    P.U. Dick, A. Dijksman, J. Egger, W.D. Herold, V.E. Markushin, C. Petitjean, T. Petitjean & W. Schöps

  9. Russian Research Center “, Kurchatov Institute”, Moscow, 123182, Russia

    M.P. Faifman, V.V. Gusev, L.I. Menshikov & L.I. Ponomarev

  10. CEN Saclay, F-91191 Gif-sur-, Yvettes Cedex, France

    J. Martino

Authors
  1. A.A. Vorobyov
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  2. P. Ackerbauer
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  3. A. Adamczak
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  4. V.A. Andreev
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  5. D.V. Balin
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  6. G.A. Beer
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  7. W.H. Breunlich
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  8. T. Case
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  9. K.M. Crowe
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  10. H. Daniel
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  11. J. Deutsch
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  12. P.U. Dick
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  13. A. Dijksman
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  14. J. Egger
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  15. T. von Egidy
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  16. M.P. Faifman
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  17. A.A. Fetisov
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  18. V.A. Ganzha
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  19. J. Govaerts
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  20. V.V. Gusev
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  21. F.J. Hartmann
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  22. W.D. Herold
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  23. P. Kammel
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  24. A.G. Krivshich
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  25. B. Lauss
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  26. E.M. Maev
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  27. V.E. Markushin
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  28. J. Martino
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  29. J. Marton
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  30. L.I. Menshikov
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  31. M. Mühlbauer
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  32. C. Petitjean
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  33. T. Petitjean
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  34. G.E. Petrov
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  35. L.I. Ponomarev
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  36. R. Prieels
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  37. W. Prymas
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  38. G.N. Schapkin
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  39. W. Schöps
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  40. W. Schott
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  41. G.G. Semenchuk
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  42. Yu.V. Smirenin
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  43. N.I. Voropaev
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Vorobyov, A., Ackerbauer, P., Adamczak, A. et al. Final results on the μ3He-capture experiment and perspectives for μ p-capture studies. Hyperfine Interactions 118, 13–24 (1999). https://doi.org/10.1023/A:1012616015304

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