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Study of the decay $$K^{+}\rightarrow \pi ^{+}\pi ^{-}\pi ^{+}\gamma $$ K+→π+π-π+γ in the OKA experiment
| Title: | Study of the decay $$K^{+}\rightarrow \pi ^{+}\pi ^{-}\pi ^{+}\gamma $$ K+→π+π-π+γ in the OKA experiment |
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| Authors: | M. M. Shapkin, S. A. Akimenko, A. V. Artamonov, A. M. Blik, V. S. Burtovoy, V. N. Bychkov, S. V. Donskov, V. A. Duk, 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. S. Konstantinov, V. I. Kravtsov, Yu. G. Kudenko, V. F. Kurshetsov, V. A. Lishin, V. M. Lysan, M. V. Medynsky, Yu. V. Mikhailov, V. F. Obraztsov, V. A. Polyakov, A. Yu. Polyarush, A. V. Popov, V. I. Romanovsky, V. I. Rykalin, A. S. Sadovsky, V. D. Samoilenko, V. K. Semenov, O. V. Stenyakin, O. G. Tchikilev, V. A. Uvarov, O. P. Yushchenko, B. Zh. Zalikhanov |
| Source: | European Physical Journal C: Particles and Fields, Vol 79, Iss 4, Pp 1-6 (2019) |
| Publisher Information: | SpringerOpen, 2019. |
| Publication Year: | 2019 |
| Collection: | LCC:Astrophysics LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| Subject Terms: | Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| More Details: | Abstract A high statistics data sample of the decays of $$K^+$$ K+ mesons to three charged particles was accumulated by the OKA experiment in 2012 and 2013. This allowed to select a clean sample of about 450 events with $$K^{+}\rightarrow \pi ^{+}\pi ^{-}\pi ^{+}\gamma $$ K+→π+π-π+γ decays with the energy of the photon in the kaon rest frame greater than 30 MeV. The measured branching fraction of the $$K^{+}\rightarrow \pi ^{+}\pi ^{-}\pi ^{+}\gamma $$ K+→π+π-π+γ , with $$E_{\gamma }^{*} > 30\ \hbox {MeV}$$ Eγ∗>30MeV is equal to $$(0.71 \pm 0.05) \times 10^{-5}$$ (0.71±0.05)×10-5 . The measured differential branching fraction over photon energy is compared with the prediction of the chiral perturbation theory to $${\mathcal {O}}(p^{4})$$ O(p4) . A search for an up-down asymmetry of the photon with respect to the hadronic system decay plane is also performed. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 1434-6044 1434-6052 |
| Relation: | http://link.springer.com/article/10.1140/epjc/s10052-019-6797-1; https://doaj.org/toc/1434-6044; https://doaj.org/toc/1434-6052 |
| DOI: | 10.1140/epjc/s10052-019-6797-1 |
| Access URL: | https://doaj.org/article/4d474731f24740bbb870df8e09a42cf3 |
| Accession Number: | edsdoj.4d474731f24740bbb870df8e09a42cf3 |
| Database: | Directory of Open Access Journals |
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| ISSN: | 14346044 14346052 |
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| DOI: | 10.1140/epjc/s10052-019-6797-1 |
| Published in: | European Physical Journal C: Particles and Fields |
| Language: | English |