Study of b-hadron decays to Λc+h−h′− final states

The Lhcb Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

Decays of Ξb and Ωb baryons to Λc+hh′− final states, with hh′− being ππ, Kπ and KK meson pairs, are searched for using data collected with the LHCb detector. The data sample studied corresponds to an integrated luminosity of 8.7 fb−1 of pp collisions collected at centre-of-mass energies s = 7, 8 and 13 TeV. The products of the relative branching fractions and fragmentation fractions for each signal mode, relative to the B→Λc+p¯π mode, are measured, with Ξb→Λc+Kπ, Ξb→Λc+KK and Ωb→Λc+KK decays being observed at over 5 σ significance. The Ξb→Λc+Kπ mode is also used to measure the Ξb production asymmetry, which is found to be consistent with zero. In addition, the B→Λc+p¯K decay is observed for the first time, and its branching fraction is measured relative to that of the B→Λc+p¯π mode.

Original languageEnglish (US)
Article number132
JournalJournal of High Energy Physics
Volume2024
Issue number8
DOIs
StatePublished - Aug 2024

Keywords

  • B Physics
  • Branching fraction
  • Hadron-Hadron Scattering
  • Heavy Quark Production

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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