World average values for the branching fractions of hadronic Ds meson decays
(updated 10 December 2014)

People working on this:   Anze Zupanc

 

BaBar, CLEO-c and Belle collaborations have measured the absolute branching fractions of hadronic decays, Ds+ → K-K+π+, Ds+K0π+, and Ds+ → ηπ+. The first two decay modes are the reference modes for the measurements of branching fractions of the Ds+ decays to any other final state. Table and figure 1 (figure 2, figure 3) summarise the individual measurements and averaged values, which are found to be

Br(Ds+ → K-K+π+) = (5.44 ± 0.14)%,
Br(Ds+K0π+) = (3.00 ± 0.09)%,
Br(Ds+ → ηπ+) = (1.71 ± 0.08)%,

where the uncertainties are total uncertainties. Individual measurements are found to be uncorrelated.

 

Experimental results and world averages for branching fractions of hadronic Ds+ decays.
The first uncertainty is statistical and the second is experimental systematic. CLEO reports Br(Ds+ → KS0π+).
We include it in the average of Br(Ds+K0π+) by using the relation Br(Ds+K0π+) = 2Br(Ds+ → KS0π+).
Mode Branching Fraction Experiment Source
K-K+π+ (5.78 ± 0.20 ± 0.30) × 10-2 BaBar P. del Amo Sanchez et al. (BaBar Collaboration), Phys. Rev. D 82, 091103 (2010)
(5.55 ± 0.14 ± 0.13) × 10-2 CLEO P. U. E. Onyisi et al. (CLEO Collaboration), Phys. Rev. D 88, 032009 (2013)
(5.06 ± 0.15 ± 0.21) × 10-2 Belle A. Zupanc et al. (Belle Collaboration), JHEP 1309, 139 (2013)
(5.44 ± 0.09 ± 0.11) × 10-2 HFAG Average
K0π+ (3.04 ± 0.10 ± 0.06) × 10-2 CLEO P. U. E. Onyisi et al. (CLEO Collaboration), Phys. Rev. D 88, 032009 (2013)
(2.95 ± 0.11 ± 0.09) × 10-2 Belle A. Zupanc et al. (Belle Collaboration), JHEP 1309, 139 (2013)
(3.00 ± 0.07 ± 0.05) × 10-2 HFAG Average
ηπ+ (1.67 ± 0.08 ± 0.06) × 10-2 CLEO P. U. E. Onyisi et al. (CLEO Collaboration), Phys. Rev. D 88, 032009 (2013)
(1.82 ± 0.14 ± 0.07) × 10-2 Belle A. Zupanc et al. (Belle Collaboration), JHEP 1309, 139 (2013)
(1.71 ± 0.07 ± 0.08) × 10-2 HFAG Average

 


WA value for Br(Ds+ → K-K+π+). For each point, the first error listed is the statistical
and the second error is the systematic error. (Click on figure for higher resolution.)

 


WA value for Br(Ds+K0π+). For each point, the first error listed is the statistical
and the second error is the systematic error. (Click on figure for higher resolution.)

 


WA value for Br(Ds+ → ηπ+). For each point, the first error listed is the statistical
and the second error is the systematic error. (Click on figure for higher resolution.)

This page is maintained by A. Zupanc and was last updated