تقرير
Study of the decay $K^{+}\to\pi^{+}\pi^{-}\pi^{+}\gamma$ in the OKA experiment
| العنوان: | Study of the decay $K^{+}\to\pi^{+}\pi^{-}\pi^{+}\gamma$ in the OKA experiment |
|---|---|
| المؤلفون: | Shapkin, M. M., Akimenko, S. A., Artamonov, A. V., Blik, A. M., Burtovoy, V. S., Donskov, S. V., Filin, A. P., Inyakin, A. V., Gorin, A. M., Khaustov, G. V., Kholodenko, S. A., Kolosov, V. N., Konstantinov, A. S., Kurshetsov, V. F., Lishin, V. A., Medynsky, M. V., Mikhailov, Yu. V., Obraztsov, V. F., Polyakov, V. A., Popov, A. V., Romanovsky, V. I., Rykalin, V. I., Sadovsky, A. S., Samoilenko, V. D., Semenov, V. K., Stenyakin, O. V., Tchikilev, O. G., Uvarov, V. A., Yushchenko, O. P., Duk, V. A., Filippov, S. N., Guschin, E. N., Khudyakov, A. A., Kravtsov, V. I., Kudenko, Yu. G., Polyarush, A. Yu., Bychkov, V. N., Kekelidze, G. D., Lysan, V. M., Zalikhanov, B. Zh. |
| المصدر: | Eur. Phys. J. C (2019) 79: 296 |
| سنة النشر: | 2018 |
| المجموعة: | High Energy Physics - Experiment |
| مصطلحات موضوعية: | High Energy Physics - Experiment |
| الوصف: | A high statistics data sample of the decays of $K^+$ 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 $K^{+}\to\pi^{+}\pi^{-}\pi^{+}\gamma$ decays with the energy of the photon in the kaon rest frame greater than 30 MeV. The measured branching fraction of the $K^{+}\to\pi^{+}\pi^{-}\pi^{+}\gamma$, with $E_{\gamma}^{*}$ > 30 MeV is $(0.71 \pm 0.05) \times 10^{-5}$. The measured energy spectrum of the decay photon is compared with the prediction of the chiral perturbation theory to O$(p^{4})$. A search for an up-down asymmetry of the photon with respect to the hadronic system decay plane is also performed. Comment: 9 pages, 7 figures, 1 table |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1140/epjc/s10052-019-6797-1 |
| URL الوصول: | http://arxiv.org/abs/1808.09176 |
| رقم الأكسشن: | edsarx.1808.09176 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1140/epjc/s10052-019-6797-1 |
|---|