Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions
Name
PhysRevD.104.032005.pdf
Description
Published version
Size
685.55 KB
Format
Adobe PDF
Checksum (MD5)
e5d4a0e3882b9b8c913e1c5693082b7b
Author(s)
Williams, Michael
Date Issued
2021
Journal
Physical Review D
Publisher
American Physical Society (APS)
Citation
Williams, Michael. 2021. "Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions." Physical Review D, 104 (3).
Version
Final published version
Abstract
The ratio of the $B^0_s$ and $B^0$ fragmentation fractions, $f_s/f_d$, in
proton-proton collisions at the LHC, is obtained as a function of $B$-meson
transverse momentum and collision centre-of-mass energy from the combined
analysis of different $B$-decay channels measured by the LHCb experiment. The
results are described by a linear function of the meson transverse momentum, or
with a function inspired by Tsallis statistics. Precise measurements of the
branching fractions of the $B^0_s \to J/\psi \phi$ and $B^0_s \to D^-_s \pi^+$
decays are performed, reducing their uncertainty by about a factor of two with
respect to previous world averages. Numerous $B^0_s$ decay branching fractions,
measured at the LHCb experiment, are also updated using the new values of
$f_s/f_d$ and branching fractions of normalisation channels. These results
reduce a major source of systematic uncertainty in several searches for new
physics performed through measurements of $B^0_s$ branching fractions.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PHYSREVD.104.032005
