https://doi.org/10.1140/epjc/s10052-023-11974-1
Regular Article - Theoretical Physics
The b quark fragmentation fractions at LHCb and meson decays with heavy quark spectators
1
Department of Physics and CCTVal, Federico Santa Maria Technical University, Valparaiso, Chile
2
Department of Physics and IPAP, Yonsei University, 120-749, Seoul, Korea
3
Department of Electrical-Electronic Engineering, University of Tarapacá, Arica, Chile
Received:
22
June
2023
Accepted:
25
August
2023
Published online:
8
September
2023
We study the current estimates of 
to extract the fragmentation fraction 
at the LHCb. A rather robust estimate of 
based on factorization and lattice results for the form factor gives 
with a 16% error. We also revisit the extraction of 
using 
instead of the theoretical cleaner but more suppressed channel 
. We also find a tension on the predictions of 
and 
considering the measurements of these modes at LHCb, and find that, within a 23% uncertainty, only the lower end of the current prediction range 
would be consistent with the LHCb measurements.
© The Author(s) 2023
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