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Burtovoy, V. S.; Akimenko, S. A.; Artamonov, A. V.; Blik, A. M.; Brekhovskikh, V. V.; Gorin, A. M.; Donskov, S. V.; Inyakin, A. V.; Kolosov, V. N.; Kurshetsov, V. F.; Lishin, V. A.; Medynsky, M. V.; Mikhailov, Yu. V.; Obraztsov, V. F.; Polyakov, V. A.; Romanovsky, V. I.; Rykalin, V. I.; Sadovsky, A. S.; Samoilenko, V. D.; Stenyakin, O. V.; Uvarov, V. A.; Filin, A. P.; Khaustov, G. V.; Kholodenko, S. A.; Tchikilev, O. G.; Yushchenko, O. P.; Guschin, E. N.; Duk, V. A.; Kravtsov, V. I.; Kudenko, Yu. G.; Polyarush, A. Yu; Filippov, S. N.; Khudyakov, A. A.; Bychkov, V. N.; Zalikhanov, B. Zh; Kekelidze, G. D.; Lysan, V. M.
Journal of experimental and theoretical physics, 12/2020, Letnik: 131, Številka: 6Journal Article
On the statistics of ~1.7 × 10 8 interactions of positively charged kaons on copper nuclei, coherent events of the K + π 0 system production are selected. The cross sections for the Coulomb and coherent strong components and their interference in the region of the K *(892) meson are measured. The partial width for the decay K *(892) → K + γ is determined. When studying the mass spectrum of the K + π 0 system, an effect which can be interpreted as the interference of the chiral anomaly and the K *(892) s -channel amplitudes is found. This gives an estimate for the ratio of the observed amplitude of the chiral anomaly to the theoretical one: A exp / A th = 0.9 ± 0.24(stat.) ± 0.3(syst.).
