Upper Limit on the K+ → π0π0π0e+ν Decay

IF 1.4 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

JETP Letters Pub Date : 2024-10-11 DOI:10.1134/S0021364024603415

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. Tiurin, V. A. Uvarov, O. P. Yushchenko, B. Zh. Zalikhanov

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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 × 10^–8 90% CL, 65 times lower than the one currently listed by PDG.

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K+→π0π0π0e+ν衰变的上限

对\({{K}^{ + }} \to {{\pi }^{0}}{{\pi }^{0}}{{\pi }^{0}}{{e}^{ + }}\nu \)衰减的搜索由OKA协作执行。搜索是基于\(3.65 \times {{10}^{9}}\) K+衰变。没有观测到信号。上限设置为BR \(({{K}^{ + }} \to {{\pi }^{0}}{{\pi }^{0}}{{\pi }^{0}}{{e}^{ + }}\nu )\) ＆lt；5.4 × 10-8 90% CL, 65 times lower than the one currently listed by PDG.

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来源期刊

JETP Letters 物理-物理：综合

CiteScore

2.40

自引率

30.80%

发文量

164

审稿时长

3-6 weeks

期刊介绍： All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.