Kavli Affiliate: T. Higuchi
| First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Ahmed, H. Aihara
| Summary:
We report measurements of time-dependent $CP$ asymmetries in $B^0 to K^0_S
pi^0 gamma$ decays based on a data sample of $(388pm6)times10^6$ $Bbar{B}$
events collected at the $Upsilon(4S)$ resonance with the Belle II detector.
The Belle II experiment operates at the SuperKEKB asymmetric-energy $e^+e^-$
collider. We measure decay-time distributions to determine $CP$-violating
parameters $S$ and $C$. We determine these parameters for two ranges of $K^0_S
pi^0$ invariant mass: $m(K^0_S pi^0)in (0.8, 1.0)$ $GeV/c^2$, which is
dominated by $B^0 to K^{*0} (to K^0_S pi^0) gamma$ decays, and a
complementary region $m(K^0_S pi^0)in (0.6, 0.8)cup(1.0, 1.8)$ $GeV/c^2$.
Our results have improved precision as compared to previous measurements and
are consistent with theory predictions.
| Search Query: ArXiv Query: search_query=au:”T. Higuchi”&id_list=&start=0&max_results=3