Measurement of time-dependent violation in decays decays
Journal Article
·
· Physical Review. D.
Here, 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.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Univ. of Hawaii, Honolulu, HI (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); KEK - High Energy Accelerator Research Organization; National Science Foundation (NSF)
- Contributing Organization:
- The Belle Collaboration; Belle Collaboration
- Grant/Contract Number:
- AC05-76RL01830; SC0012704; SC0009973; SC0010504
- OSTI ID:
- 1491281
- Alternate ID(s):
- OSTI ID: 1494995; OSTI ID: 1508737; OSTI ID: 1593820
- Report Number(s):
- BNL-211266-2019-JAAM; PNNL-SA-142802; PRVDAQ; 011102
- Journal Information:
- Physical Review. D., Journal Name: Physical Review. D. Vol. 99 Journal Issue: 1; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 2 works
Citation information provided by
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