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arXiv · 2409.08817

The upper limit on the $K^+ \to \pi^0\pi^0\pi^0e^+\nu$ decay

A. V. Kulik·S. N. Filippov·E. N. Gushchin·A. A. Khudyakov·V. I. Kravtsov·Yu. G. Kudenko·A. Yu. Polyarush·A. V. Artamonov·S. V. Donskov·A. P. Filin·A. M. Gorin·A. V. Inyakin·G. V. Khaustov·S. A. Kholodenko·V. N. Kolosov·A. K. Konoplyannikov·V. F. Kurshetsov·V. A. Lishin·M. V. Medynsky·V. F. Obraztsov·A. V. Okhotnikov·V. A. Polyakov·V. I. Romanovsky·V. I. Rykalin·A. S. Sadovsky·V. D. Samoylenko·I. S. Tiurin·V. A. Uvarov·O. P. Yushchenko
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Abstract

A search for the $K^{+} \to \pi^{0}\pi^{0}\pi^{0}e^+\nu$ decay is performed by the OKA collaboration. The search is based on $3.65 \times 10^9 ~ K^+$ decays. No signal is observed. The upper limit set is $BR(K^{+} \to \pi^{0}\pi^{0}\pi^{0}e^+\nu) < 5.4\times 10^{-8} ~ 90\%$ CL, 65 times lower than the one currently listed by PDG.

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A. V. Kulik, S. N. Filippov, E. N. Gushchin, A. A. Khudyakov, V. I. Kravtsov, Yu. G. Kudenko, A. Yu. Polyarush, A. V. Artamonov, S. V. Donskov, A. P. Filin, A. M. Gorin, A. V. Inyakin, G. V. Khaustov, S. A. Kholodenko, V. N. Kolosov, A. K. Konoplyannikov, V. F. Kurshetsov, V. A. Lishin, M. V. Medynsky, V. F. Obraztsov, A. V. Okhotnikov, V. A. Polyakov, V. I. Romanovsky, V. I. Rykalin, A. S. Sadovsky, V. D. Samoylenko, I. S. Tiurin, V. A. Uvarov, O. P. Yushchenko. 2024-09-13. The upper limit on the $K^+ \to \pi^0\pi^0\pi^0e^+\nu$ decay. https://arxiv.org/abs/2409.08817

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