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|a 10.1103/PhysRevD.105.112010
|2 doi
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|a koha001007868
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|a RU-ToGU
|b rus
|c RU-ToGU
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|a Observation of the double Dalitz decay η′ → e+ e− e+ e−
|c M. Ablikim, M. N. Achasov, P. Adlarson [et al.]
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|a Текст
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|a электронный
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|a Библиогр.: 29 назв.
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|a Based on (0087 +/- 44) x 10(6) J/psi events collected with the BESIII detector at BEPCII, the double Dalitz decay eta' -> e(+)e(-)e(+)e(-) is observed for the first time via the J/psi -> gamma eta' decay process. The significance is found to be 5.7s with systematic uncertainties taken into consideration. Its branching fraction is determined to be B(eta' -> e(+)e(-)e(+)e(-)) = (4.5 +/- 1.0(stat) +/- 0.5(sys)) x 10(-6).
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|a Далица двойной распад
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|a BESIII, детектор
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|a BEPCII, коллайдер
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|a статьи в журналах
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|a Ablikim, M.
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|a Achasov, M. N.
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|a Adlarson, P.
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|a Chelkov, G. A.
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|t Physical Review D
|d 2022
|g Vol. 105, № 11. P. 112010-1-112010-8
|x 2470-0010
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|a RU-ToGU
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|u http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001007868
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|a статья
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|c 1007868
|d 1007868
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