From LHCbPhysics https://twitter.com/LHCbPhysics on Twitter: Precise measurement of the f/fd ratio of fragmentation fractions and of B0 decay branching fractions https://arxiv.org/abs/2103.06810 - These results reduce a major source of systematic uncertainty in several measurements of B0 branching fractions. https://twitter.com/LHCbPhysics/status/1370281553700524033/photo/1 https://chirp.cooleysekula.net/attachment/71303