Speaker
Munira Khan
(BELLE (BELLE II Experiment))
Description
We propose new methods to determine the $\Upsilon(4S)\to B^+B^-$ and $\Upsilon(4S)\to B^0\overline B^0$ decay rates. These rates and their ratio are some of the limiting uncertainties in absolute branching fraction measurements, and thereby for a variety of applications, such as flavor symmetry relations. The new methods we propose are based in one case on exploiting the $\Upsilon(5S)$ data sets, in the other case on the different average number of charged tracks in $B^\pm$ and $B^0$ decays. We estimate future sensitivities using these methods and discuss possible measurements of $f_d / f_u$ at the LHC.
| Collaboration / Activity | Phenomenology |
|---|
Primary authors
Florian Bernlochner
(BELLE (BELLE II Experiment))
Greg Landsberg
(Brown University)
Martin Jung
(TU Munich)
Munira Khan
(BELLE (BELLE II Experiment))
Zoltan Ligeti
(LBNL)
