Using 1.31 × 10^9 J/ψ events collected by the BESIII detector at the Beijing Electron Positron Collider, we search for the process J/ψ → Λc+ e− + c:c: for the first time. In this process, both baryon and lepton number conservation is violated. No signal is found and the upper limit on the branching fraction B(J/ψ → Λc+ e− + c:c:) is set to be 6.9 × 10−8 at the 90% confidence level.

Search for baryon and lepton number violation in J/ψ→Λc+e−+c.c

Farinelli, R.;Garzia, I.;
2019

Abstract

Using 1.31 × 10^9 J/ψ events collected by the BESIII detector at the Beijing Electron Positron Collider, we search for the process J/ψ → Λc+ e− + c:c: for the first time. In this process, both baryon and lepton number conservation is violated. No signal is found and the upper limit on the branching fraction B(J/ψ → Λc+ e− + c:c:) is set to be 6.9 × 10−8 at the 90% confidence level.
2019
Ablikim, M.; Achasov, M.  N.; Ahmed, S.; Albrecht, M.; Amoroso, A.; An, F.  F.; An, Q.; Bai, J.  Z.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Ban, Y....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2403875
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