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Ke3 Decay Studies in the OKA Experiment

  • Fields, Particles, and Nuclei
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Abstract

Recent results from OKA setup concerning form factor studies in Ke3 decay are presented. About 5.25 M events obtained for decays of 17.7 GeV/cK+ are selected for the analysis. The linear and quadratic slopes for the decay form factor f+(t) are measured: λ'+ = 2.95 ± 0.022 ± 0.018 × 10 -2 for the linear slope fit and λ+ = 2.611 ± 0.035 ± 0.028 × 10 -2, λ"+ = 1.91 ± 0.19 ± 0.14 × 10 -3 for the quadratic one. The scalar and tensor contributions are compatible with zero. Several alternative parametrizations are tried: the Pole fit parameter is found to be M V = 891 ± 3 MeV; the parameter of the dispersive parametrization is measured to be Λ+ = 2.458 ± 0.018 × 10-2.

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Authors and Affiliations

  1. Institute for High Energy Physics, National Research Center Kurchatov Institute, Protvino, Moscow region, 142281, Russia

    O. P. Yushchenko, V. F. Kurshetsov, A. P. Filin, S. A. Akimenko, A. V. Artamonov, A. M. Blik, V. V. Brekhovskikh, V. S. Burtovoy, S. V. Donskov, A. V. Inyakin, A. M. Gorin, G. V. Khaustov, S. A. Kholodenko, V. N. Kolosov, A. S. Konstantinov, V. M. Leontiev, V. A. Lishin, M. V. Medynsky, Yu. V. Mikhailov, V. F. Obraztsov, V. A. Polyakov, A. V. Popov, V. I. Romanovsky, V. I. Rykalin, A. S. Sadovsky, V. D. Samoilenko, V. K. Semenov, O. V. Stenyakin, O. G. Tchikilev & V. A. Uvarov

  2. Institute for Nuclear Research, Russian Academy of Sciences, Troitsk, Moscow, 142190, Russia

    V. A. Duk, S. N. Filippov, E. N. Guschin, Yu. G. Kudenko, A. A. Khudyakov & V. I. Kravtsov

  3. Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, Russia

    A. Yu. Polyarush, V. N. Bychkov, G. D. Kekelidze, V. M. Lysan & B. Zh. Zalikhanov

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  1. O. P. Yushchenko
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  2. V. F. Kurshetsov
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  3. A. P. Filin
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  4. S. A. Akimenko
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  5. A. V. Artamonov
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  6. A. M. Blik
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  7. V. V. Brekhovskikh
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  8. V. S. Burtovoy
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  9. S. V. Donskov
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  10. A. V. Inyakin
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  11. A. M. Gorin
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  12. G. V. Khaustov
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  13. S. A. Kholodenko
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  14. V. N. Kolosov
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  15. A. S. Konstantinov
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  16. V. M. Leontiev
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  17. V. A. Lishin
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  18. M. V. Medynsky
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  19. Yu. V. Mikhailov
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  20. V. F. Obraztsov
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  21. V. A. Polyakov
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  22. A. V. Popov
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  26. V. D. Samoilenko
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  27. V. K. Semenov
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  28. O. V. Stenyakin
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  29. O. G. Tchikilev
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  30. V. A. Uvarov
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  31. V. A. Duk
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  32. S. N. Filippov
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  33. E. N. Guschin
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  34. Yu. G. Kudenko
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  35. A. A. Khudyakov
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  36. V. I. Kravtsov
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  37. A. Yu. Polyarush
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  38. V. N. Bychkov
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  39. G. D. Kekelidze
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  40. V. M. Lysan
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  41. B. Zh. Zalikhanov
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Corresponding author

Correspondence to O. P. Yushchenko.

Additional information

Published in Russian in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2018, Vol. 107, No. 3, pp. 147–150.

The article is published in the original.

Also at the University of Birmingham, United Kingdom.

Also at National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409 Russia and Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow region, Russia.

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Yushchenko, O.P., Kurshetsov, V.F., Filin, A.P. et al. Ke3 Decay Studies in the OKA Experiment. Jetp Lett. 107, 139–142 (2018). https://doi.org/10.1134/S0021364018030037

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  • DOI: https://doi.org/10.1134/S0021364018030037

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