Improved measurements of branching fractions for ηc →φφ and ωφ

Using ð223.7 1.4Þ × 106 J=ψ events accumulated with the BESIII detector, we study ηc decays to ϕϕ and ωϕ final states. The branching fraction of ηc → ϕϕ is measured to be Brðηc → ϕϕÞ ¼ ð2.5 0.3þ0.3 −0.7 0.6Þ × 10−3, where the first uncertainty is statistical, the second is systematic, and the thi...

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Bibliographic Details

Published in:	Physical Review D Vol. 95, № 9. P. 092004-1-092004-13
Other Authors:	Ablikim, M., Ai, X. C., Chelkov, G. A., Achasov, M. N.
Format:	Article
Language:	English
Subjects:	BESIII, детектор BEPCII, коллайдер статьи в журналах
Online Access:	http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000583259 Перейти в каталог НБ ТГУ