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

LHCb collaboration

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Decays of Ξ b and Ω b baryons to Λ c +h h ′− final states, with h h ′− being π π , K π and K K 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 →Λ c +p¯π mode, are measured, with Ξ b →Λ c +K π , Ξ b →Λ c +K K and Ω b →Λ c +K K decays being observed at over 5 σ significance. The Ξ b →Λ c +K π mode is also used to measure the Ξ b production asymmetry, which is found to be consistent with zero. In addition, the B →Λ c +p¯K decay is observed for the first time, and its branching fraction is measured relative to that of the B →Λ c +p¯π mode.

Original languageEnglish
Article number132
JournalJournal of High Energy Physics
Volume2024
Issue number8
DOIs
Publication statusPublished - 1 Aug 2024

Keywords

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

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