The upper limit on the $K^+ \to π^0π^0π^0e^+ν$ decay

arXiv - PHYS - High Energy Physics - Experiment Pub Date : 2024-09-13 DOI:arxiv-2409.08817

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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$K^+ to π^0π^0π^0e^+ν$ 衰变的上限

OKA 合作小组对 $K^{+} to\pi^{0}\pi^{0}\pi^{0}e^+\nu$ 衰变进行了搜索。搜索基于 3.65 times 10^9 ~ K^+$ 衰变。没有观测到信号。设定的上限为：$BR(K^{+} \to\pi^{0}\pi^{0}\pi^{0}e^+\nu) < 5.4 次 10^{-8} ~ 90\%$ CL, 65.~ 90%$ CL，比 PDG 目前列出的数值低 65 倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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arXiv - PHYS - High Energy Physics - Experiment

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