A. V. Artamonov, V. N. Bychkov, S. V. Donskov, A. P. Filin, S. N. Filippov, A. M. Gorin, E. N. Gushchin, A. V. Inyakin, G. D. Kekelidze, G. V. Khaustov, S. A. Kholodenko, A. A. Khudyakov, V. N. Kolosov, A. K. Konoplyannikov, V. I. Kravtsov, Yu. G. Kudenko, A. V. Kulik, V. F. Kurshetsov, V. A. Lishin, V. M. Lysan, M. V. Medynsky, V. F. Obraztsov, A. V. Okhotnikov, V. A. Polyakov, A. Yu. Polyarush, V. I. Romanovsky, V. I. Rykalin, A. S. Sadovsky, V. D. Samoylenko, M. M. Shapkin, I. S. Tyurin, V. A. Uvarov, O. P. Yushchenko, B. Zh. Zalikhanov, “Upper limit on the <nobr>$K^{+} \to \pi^{0}\pi^{0}\pi^{0}e^+\nu$</nobr>”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2024, Volume 120, Issue 8,Pages <nobr>578–582</nobr>

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Pis'ma v Zh. Èksper. Teoret. Fiz., 2024 Volume 120, Issue 8, Pages 578–582 (Mi jetpl7346)

This article is cited in 2 papers

FIELDS, PARTICLES, AND NUCLEI

Upper limit on the $K^{+} \to \pi^{0}\pi^{0}\pi^{0}e^+\nu$

A. V. Artamonov^a, V. N. Bychkov^b, S. V. Donskov^a, A. P. Filin^a, S. N. Filippov^c, A. M. Gorin^a, E. N. Gushchin^c, A. V. Inyakin^a, G. D. Kekelidze^b, G. V. Khaustov^a, S. A. Kholodenko^ad, A. A. Khudyakov^c, V. N. Kolosov^a, A. K. Konoplyannikov^a, V. I. Kravtsov^c, Yu. G. Kudenko^cef, A. V. Kulik^c, V. F. Kurshetsov^a, V. A. Lishin^a, V. M. Lysan^b, M. V. Medynsky^a, V. F. Obraztsov^a, A. V. Okhotnikov^a, V. A. Polyakov^a, A. Yu. Polyarush^c, V. I. Romanovsky^a, V. I. Rykalin^a, A. S. Sadovsky^a, V. D. Samoylenko^a, M. M. Shapkin^a, I. S. Tyurin^a, V. A. Uvarov^a, O. P. Yushchenko^a, B. Zh. Zalikhanov^b

^a IHEP, National Research Center Kurchatov Institute, 142281, Protvino, Moscow region, Russia
^b Joint Institute of Nuclear Research, 141980, Dubna, Moscow region, Russia
^c Institute for Nuclear Research, Russian Academy of Sciences, 117312, Moscow, Russia
^d Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, 3-56127, Pisa, Italy
^e National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409, Moscow, Russia
^f Moscow Institute of Physics and Technology MIPT (National Research University), 141701, Dolgoprudnyi, Moscow region, Russia

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.

Received: 26.07.2024
Revised: 11.09.2024
Accepted: 11.09.2024

DOI: 10.31857/S0370274X24100145

English version: Journal of Experimental and Theoretical Physics Letters, 2024, 120:8, 554–558

© Steklov Math. Inst. of RAS, 2025