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First measurement of the B(S) meson mass

Research output: Contribution to journalJournal article


  • ALEPH Collaboration
<mark>Journal publication date</mark>1993
<mark>Journal</mark>Physics Letters B
Issue number1-4
Number of pages12
Pages (from-to)425-436
<mark>Original language</mark>English


In a sample of about 1.1 million hadronic Z decays recorded with the ALEPH detector during the 1990–1992 running of LEP, two unambiguous BS meson candidates were observed. From these events the mass of the BS meson has been measured to be 5.3686 ± 0.0056 (stat.) ± 0.0015 (syst.) GeV.