The b quark fragmentation fractions at LHCb and meson decays with heavy quark spectators C. O. Dib, C. S. Kim and N. A. Neill Eur. Phys. J. C, 83 9 (2023) 793 Published online: 08 September 2023 DOI: 10.1140/epjc/s10052-023-11974-1