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Measurement of time-dependent C P violation in B 0 → K S 0 π 0 π 0 decays
- Source :
- Physical review / D 99(1), 011102 (2019). doi:10.1103/PhysRevD.99.011102
- Publication Year :
- 2019
- Publisher :
- Inst.812068, 2019.
-
Abstract
- We report a measurement of time-dependent CP violation in B0→K0Sπ0π0 decays using a data sample of 772×106 B¯B pairs collected by the Belle experiment running at the Υ(4S) resonance at the KEKB e+e− collider. This decay proceeds mainly via a b→sd¯d “penguin” amplitude. The results are sin2ϕeff1=0.92+0.27−0.31 (stat.) ±0.11 (syst.) and A=0.28±0.21 (stat.) ±0.04 (syst.), which are the most precise measurements of CP violation in this decay mode to date. The value for the CP-violating parameter sin2ϕeff1 is consistent with that obtained using decay modes proceeding via a b→c¯cs “tree” amplitude
- Subjects :
- ddc:530
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Physical review / D 99(1), 011102 (2019). doi:10.1103/PhysRevD.99.011102
- Accession number :
- edsair.od......3364..58ece977e6d85a75706a502dfc1510fd