Test of exotic scalar and tensor interactions in Ke3 decay using stopped positive kaons

A. S. Levchenko, A. N. Khotjantsev, A. P. Ivashkin, M. Abe, M. A. Aliev, V. V. Anisimovsky, M. Aoki, I. Arai, Y. Asano, T. Baker, M. Blecher, P. Depommier, M. Hasinoff, K. Horie, H. C. Huang, Y. Igarashi, T. Ikeda, J. Imazato, M. M. Khabibullin, Yu G. KudenkoY. Kuno, L. S. Lee, G. Y. Lim, J. A. Macdonald, D. R. Marlow, C. R. Mindas, O. V. Mineev, C. Rangacharyulu, S. Shimizu, Y. M. Shin, A. Suzuki, A. Watanabe, N. V. Yershov, T. Yokoi

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The form factors of the decay K+ → π+e+νe (Ke3) have been determined from the comparison of the experimental and Monte Carlo Dalitz distributions containing about 105 Ke3 events. The following values of the parameters were obtained: λ+ = 0.0278 ± 0.0017 (stat.) ± 0.0015 (syst.), |fS/f+(0)| = 0.0040 ± 0.0160 (stat.) ± 0.0067 (syst.), and |fT/f+(0)| = 0.019 ± 0.080 (stat.), ± 0.038 (syst.). Both scalar fS and tensor fT form factors are consistent with the Standard Model predictions of zero values.

Original languageEnglish (US)
Pages (from-to)2232-2237
Number of pages6
JournalPhysics of Atomic Nuclei
Issue number12
StatePublished - Dec 2002

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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    Levchenko, A. S., Khotjantsev, A. N., Ivashkin, A. P., Abe, M., Aliev, M. A., Anisimovsky, V. V., Aoki, M., Arai, I., Asano, Y., Baker, T., Blecher, M., Depommier, P., Hasinoff, M., Horie, K., Huang, H. C., Igarashi, Y., Ikeda, T., Imazato, J., Khabibullin, M. M., ... Yokoi, T. (2002). Test of exotic scalar and tensor interactions in Ke3 decay using stopped positive kaons. Physics of Atomic Nuclei, 65(12), 2232-2237. https://doi.org/10.1134/1.1530306