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Search for rare decay J/psi -> phi e(+)e(-)
Journal article   Peer reviewed

Search for rare decay J/psi -> phi e(+)e(-)

M. Ablikim, M. N. Achasov, S. Ahmed, M. Albrecht, M. Alekseev, A. Amoroso, F. F. An, Q. An, Y. Bai, O. Bakina, …
Physical review. D, Vol.99(5)
2019-03-26
DOI: https://doi.org/10.1103/PhysRevD.99.052010

Abstract

Astronomy & Astrophysics Physical Sciences Physics Physics, Particles & Fields Science & Technology
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) -> pi(+)pi(-) J/psi. No signal events are observed and the upper limit on the branching fraction is set to be B(J/psi -> phi e(+)e(-)) < 1.2 x 10(-7) at the 90% confidence level, which is still about one order of magnitude higher than the Standard Model prediction.

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5 Physics
5.9 Particles & Fields
5.9.73 Nucleon
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Astronomy & Astrophysics
Physics, Particles & Fields
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Physics

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