Browsing Makale by Subject ":E(+)E(-)"
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Search for rare decay J/psi -> phi e(+)e(-)
(2019)Using a data sample of 448.1 x 10(6) psi(3686) events collected at root s = 3.686 GeV with the BESIII detector at the Beijing Electron-Positron Collider II, we search for the rare decay J/psi -> phi e(+)e(-) via psi(3686) ...