Search for the charged lepton flavor violating decay J/ψ→eτ
Collaboration
10 pages
Published in:
- Phys.Rev.D 103 (2021) 11, 112007
- Published: Jun 1, 2021and
- Published: Jun 23, 2021
e-Print:
- 2103.11540 [hep-ex]
DOI:
- 10.1103/PhysRevD.103.112007 (publication)
PDG: J/ψ(1S) → e±τ∓
Experiments:
View in:
Citations per year
Abstract: (APS)
A search for the charged lepton flavor violating decay J/ψ→e±τ∓ with τ∓→π∓π0ντ is performed with about 10 billion J/ψ events collected with the BESIII detector at the BEPCII. No significant signal is observed, and an upper limit is set on the branching fraction B(J/ψ→e±τ∓)<7.5×10−8 at the 90% confidence level. This improves the previously published limit by two orders of magnitude.Note:
- 9 pages, 4 figures, 2 tables
- new physics
- lepton: flavor: violation
- BES
- Beijing Stor
- J/psi(3100): leptonic decay
- J/psi(3100): rare decay
- J/psi(3100): branching ratio
- branching ratio: upper limit
- J/psi(3100) --> electron tau
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