Searches for the light invisible axion-like particle in \(K^{+}\to\pi^{+}\pi^{0}a\) decay

Searches for the light invisible axion-like particle in \(K^{+}\to\pi^{+}\pi^{0}a\) decay

A high statistics data sample of the \(K^{+}\) decays is recorded by the OKA collaboration. A missing mass analysis is performed to search for a light invisible pseudoscalar axion-like particle (ALP) \(a\) in the decay \(K^{+} \to \pi^{+} \pi^{0} a\). No signal is observed, the upper limits for the...

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Hauptverfasser: Sadovsky, A S, Filin, A P, Akimenko, S A, Artamonov, A V, Blik, A M, Donskov, S V, Gorin, A M, Inyakin, A V, Khaustov, G V, Kholodenko, S A, Kolosov, V N, Kurshetsov, V F, Lishin, V A, Medynsky, M V, Obraztsov, V F, Okhotnikov, A V, Polyakov, V A, Romanovsky, V I, Rykalin, V I, Samoylenko, V D, Tiurin, I S, Uvarov, V A, Yushchenko, O P, Filippov, S N, Gushchin, E N, Khudyakov, A A, Kravtsov, V I, Kudenko, Yu G, Kulik, A V, A Yu Polyarush, Bychkov, V N, Kekelidze, G D, Lysan, V M, Zalikhanov, B Zh
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Confidence intervals
Particle decay
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container_title arXiv.org
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creator Sadovsky, A S
Filin, A P
Akimenko, S A
Artamonov, A V
Blik, A M
Donskov, S V
Gorin, A M
Inyakin, A V
Khaustov, G V
Kholodenko, S A
Kolosov, V N
Kurshetsov, V F
Lishin, V A
Medynsky, M V
Obraztsov, V F
Okhotnikov, A V
Polyakov, V A
Romanovsky, V I
Rykalin, V I
Samoylenko, V D
Tiurin, I S
Uvarov, V A
Yushchenko, O P
Filippov, S N
Gushchin, E N
Khudyakov, A A
Kravtsov, V I
Kudenko, Yu G
Kulik, A V
A Yu Polyarush
Bychkov, V N
Kekelidze, G D
Lysan, V M
Zalikhanov, B Zh
description A high statistics data sample of the \(K^{+}\) decays is recorded by the OKA collaboration. A missing mass analysis is performed to search for a light invisible pseudoscalar axion-like particle (ALP) \(a\) in the decay \(K^{+} \to \pi^{+} \pi^{0} a\). No signal is observed, the upper limits for the branching ratio of the decay are calculated. The \(90\%\) confidence level upper limit is changing from \(2.5\cdot10^{-6}\) to \(2\cdot10^{-7}\) for the ALP mass from 0 to 200 MeV/\(c^{2}\), except for the region of \(\pi^{0}\) mass, where the upper limit is \(4.4\cdot10^{-6}\).
doi_str_mv 10.48550/arxiv.2310.16429
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subjects Confidence intervals
Particle decay
title Searches for the light invisible axion-like particle in \(K^{+}\to\pi^{+}\pi^{0}a\) decay
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