Kavli Affiliate: T. Higuchi
| First 5 Authors: Belle II Collaboration, F. Abudinén, I. Adachi, K. Adamczyk, L. Aggarwal
| Summary:
We report the measurement of the branching fraction of the $B^0 to K_S^0
pi^0 gamma$ decay in $e^+ e^- to Upsilon(4S) to B overline{B}$ data
recorded by the Belle II experiment at the SuperKEKB asymmetric-energy collider
and corresponding to 190 fb$^{-1}$ of integrated luminosity. The signal yield
is measured to be $121pm 29,hbox{(stat.)}$, leading to the branching
fraction ${cal B}left(B^0 to K_S^0 pi^0 gammaright) = left(7.3 pm
1.8,hbox{(stat.)} pm 1.0,hbox{(syst.)} right)times 10^{-6}$, which
agrees with the known value.
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