A. Amirkhanov, A. Anisenkov, V. Aulchenko, R. R. Akhmetshin, N. S. Bashtovoy, D. Berkaev, A. Bondar, A. Bragin, D. S. Vasileuskaya, A. O. Gorkovenko, F. Grancagnolo, A. Grebenuk, S. Gribanov, D. Grigoriev, D. Epifanov, A. Erofeev, D. Zhadan, I. Zemlyansky, A. Zubakin, V. Ivanov, F. Ignatov, S. Karpov, V. Kazanin, A. Kirpotin, I. Koop, A. Korobov, A. Kozyrev, E. Kozyrev, P. Krokovny, A. Kuzmin, A. Kuzmenko, Y. Kurochkin, B. D. Kutsenko, I. Logashenko, P. Lukin, K. Mikhailov, V. S. Okhapkin, A. Otboev, Y. Pestov, A. Popov, G. Razuvaev, Yu. A. Rogovsky, A. A. Ruban, N. Ryskulov, A. Ryzhenenkov, A. Semenov, A. Senchenko, A. Sibidanov, E. Solodov, A. Talyshev, V. Titov, S. S. Tolmachev, G. Fedotovich, Y. Shatunov, B. Shwartz, V. Shebalin, D. Shemyakin, D. Shoukavy, L. Epshteyn, Y. Yudin
{"title":"在 CMD-3 探测器上首次测量欧米茄介子转换衰变为中性先驱和电子-正电子对的情况","authors":"A. Amirkhanov, A. Anisenkov, V. Aulchenko, R. R. Akhmetshin, N. S. Bashtovoy, D. Berkaev, A. Bondar, A. Bragin, D. S. Vasileuskaya, A. O. Gorkovenko, F. Grancagnolo, A. Grebenuk, S. Gribanov, D. Grigoriev, D. Epifanov, A. Erofeev, D. Zhadan, I. Zemlyansky, A. Zubakin, V. Ivanov, F. Ignatov, S. Karpov, V. Kazanin, A. Kirpotin, I. Koop, A. Korobov, A. Kozyrev, E. Kozyrev, P. Krokovny, A. Kuzmin, A. Kuzmenko, Y. Kurochkin, B. D. Kutsenko, I. Logashenko, P. Lukin, K. Mikhailov, V. S. Okhapkin, A. Otboev, Y. Pestov, A. Popov, G. Razuvaev, Yu. A. Rogovsky, A. A. Ruban, N. Ryskulov, A. Ryzhenenkov, A. Semenov, A. Senchenko, A. Sibidanov, E. Solodov, A. Talyshev, V. Titov, S. S. Tolmachev, G. Fedotovich, Y. Shatunov, B. Shwartz, V. Shebalin, D. Shemyakin, D. Shoukavy, L. Epshteyn, Y. Yudin","doi":"10.29235/1561-2430-2024-60-1-52-71","DOIUrl":null,"url":null,"abstract":"The conversion decay w® p0e+e- with the CMD-3 detector on the VEPP-2000 electron-positron collider VEPP-2000 at the Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences was investigated. The data from the first scan were used in the work, which corresponded to an integral brightness of around 10 pb–1 in the energy range of 660 to 840 MeV in the center of mass system. The 1113 ± 37 signal events were detected. The product of the relative decay probability and ω-meson width G(w® e+e- ) × Br(w® p0e+e- ) = (4, 20 ± 0,12 ± 0, 25) ×10-7 MeV, as well branching ratio Br(w® p0e+e- ) = (6, 78 ± 0,19 ± 0, 40) ×10-4 are measured with better precision than the world average.","PeriodicalId":516297,"journal":{"name":"Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series","volume":"33 21","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The first measurement of the conversion decay of the omega meson into a neutral pion and an electron-positron pair at the CMD-3 detector\",\"authors\":\"A. Amirkhanov, A. Anisenkov, V. Aulchenko, R. R. Akhmetshin, N. S. Bashtovoy, D. Berkaev, A. Bondar, A. Bragin, D. S. Vasileuskaya, A. O. Gorkovenko, F. Grancagnolo, A. Grebenuk, S. Gribanov, D. Grigoriev, D. Epifanov, A. Erofeev, D. Zhadan, I. Zemlyansky, A. Zubakin, V. Ivanov, F. Ignatov, S. Karpov, V. Kazanin, A. Kirpotin, I. Koop, A. Korobov, A. Kozyrev, E. Kozyrev, P. Krokovny, A. Kuzmin, A. Kuzmenko, Y. Kurochkin, B. D. Kutsenko, I. Logashenko, P. Lukin, K. Mikhailov, V. S. Okhapkin, A. Otboev, Y. Pestov, A. Popov, G. Razuvaev, Yu. A. Rogovsky, A. A. Ruban, N. Ryskulov, A. Ryzhenenkov, A. Semenov, A. Senchenko, A. Sibidanov, E. Solodov, A. Talyshev, V. Titov, S. S. Tolmachev, G. Fedotovich, Y. Shatunov, B. Shwartz, V. Shebalin, D. Shemyakin, D. Shoukavy, L. Epshteyn, Y. Yudin\",\"doi\":\"10.29235/1561-2430-2024-60-1-52-71\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The conversion decay w® p0e+e- with the CMD-3 detector on the VEPP-2000 electron-positron collider VEPP-2000 at the Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences was investigated. The data from the first scan were used in the work, which corresponded to an integral brightness of around 10 pb–1 in the energy range of 660 to 840 MeV in the center of mass system. The 1113 ± 37 signal events were detected. 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The first measurement of the conversion decay of the omega meson into a neutral pion and an electron-positron pair at the CMD-3 detector
The conversion decay w® p0e+e- with the CMD-3 detector on the VEPP-2000 electron-positron collider VEPP-2000 at the Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences was investigated. The data from the first scan were used in the work, which corresponded to an integral brightness of around 10 pb–1 in the energy range of 660 to 840 MeV in the center of mass system. The 1113 ± 37 signal events were detected. The product of the relative decay probability and ω-meson width G(w® e+e- ) × Br(w® p0e+e- ) = (4, 20 ± 0,12 ± 0, 25) ×10-7 MeV, as well branching ratio Br(w® p0e+e- ) = (6, 78 ± 0,19 ± 0, 40) ×10-4 are measured with better precision than the world average.
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