Search for the Bc meson in hadronic Z0 decays

The OPAL Collaboration

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

A search for decays of the Bc meson was performed using data collected from 1990-1995 with the OPAL detector on or near the Z0 peak at LEP. The decay channels B+c→J/ψπ+, B+c→J/ψa+1 and B+c→J/ψℓ+v were investigated, where ℓ denotes an electron or a muon. Two candidates are observed in the mode B+c→J/ψπ+, with an estimated background of (0.63 ± 0.20) events. The weighted mean of the masses of the two candidates is (6.32 ± 0.06) GeV/c2, which is consistent with the predicted mass of the Bc meson. One candidate event is observed in the mode B+c→J/ψℓ+v, with an estimated background of (0.82 ± 0.19) events. No candidate events are observed in the B+c→J/ψa+1 decay mode, with an estimated background of (1.10 ± 0.22) events. Upper bounds at the 90% confidence level are set on the production rates for these processes.

Original languageEnglish
Pages (from-to)157-168
Number of pages12
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume420
Issue number1-2
DOIs
StatePublished - 19 Feb 1998
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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