Observation of the decay Bs 0 → ηc ϕ and evidence for Bs 0 → ηc π + π

The LHCb collaboration

Research output: Indexed journal article Articlepeer-review

8 Citations (Scopus)


A study of Bs 0 → ηcϕ and Bs 0 → ηcπ+π decays is performed using pp collision data corresponding to an integrated luminosity of 3.0 fb−1, collected with the LHCb detector in Run 1 of the LHC. The observation of the decay Bs 0 → ηcϕ is reported, where the ηc meson is reconstructed in the pp¯ , K+Kπ+π, π+ππ+π and K+KK+K decay modes and the ϕ(1020) in the K+K decay mode. The decay Bs 0 → J/ψϕ is used as a normalisation channel. Evidence is also reported for the decay Bs 0 → ηcπ+π, where the ηc meson is reconstructed in the pp¯ decay mode, using the decay Bs 0 → J/ψπ+π as a normalisation channel. The measured branching fractions are(Formula Presented.)where in each case the first uncertainty is statistical, the second systematic and the third uncertainty is due to the limited knowledge of the external branching fractions.[Figure not available: see fulltext.].

Original languageEnglish
Article number21
JournalJournal of High Energy Physics
Issue number7
Publication statusPublished - 1 Jul 2017


  • B physics
  • Branching fraction
  • Flavor physics
  • Hadron-Hadron scattering (experiments)

Cite this