Measurement of decay-time dependent CP violation in B0 → KS0KS0KS0 using 2019--2021 Belle II data
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| Authors | Koji Hara, Kazutaka Sumisawa, Yutaka Ushiroda |
|---|---|
| Non-Belle II authors | Hikaru Tanigawa |
| Date | Sept. 14, 2022 |
| Belle II Number | BELLE2-CONF-PH-2022-007 |
| Abstract | We report a measurement of decay-time dependent CP-violating parameters in B0 → KS0KS0KS0 decays. We use $(198.0 \pm 3.0) \times 10^6\ \BB$ pairs collected at the \FourS resonance with the Belle II detector at the SuperKEKB asymmetric-energy $e^+e^-$ collider. The observed mixing-induced and direct \cp violation parameters are $\scp = -1.86\ _{-0.46}^{+0.91}~{\rm (stat)} \pm 0.09~{\rm (syst)}$ and $\acp = -0.22\ _{-0.27}^{+0.30}~{\rm (stat)} \pm 0.04~{\rm (syst)}$, respectively. |
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- BELLE2-CONF-PH-2022-007.pdf (versions: 2, 1)