Journal
PHYSICAL REVIEW D
Volume 81, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.81.011101
Keywords
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Funding
- Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan
- Japan Society for the Promotion of Science (JSPS)
- Tau-Lepton Physics Research Center of Nagoya University
- Australian Research Council
- Australian Department of Industry, Innovation, Science and Research
- National Natural Science Foundation of China [10575109, 10775142, 10875115, 10825524]
- Department of Science and Technology of India
- Ministry Education Science and Technology
- Korea Science and Engineering Foundation [R01-2008000-10477-0]
- Korea Research Foundation [KRF-2008-313C00177]
- Korea Institute of Science and Technology Information
- Polish Ministry of Science and Higher Education
- Ministry of Education and Science of the Russian Federation
- Russian Federal Agency for Atomic Energy
- Slovenian Research Agency
- Swiss National Science Foundation
- National Science Council
- Ministry of Education of Taiwan
- U. S. Department of Energy
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We report measurements of CP violation parameters in B-0 -> K-0 pi(0) decays based on a data sample of 657 X 10(6)B (B) over bar pairs collected with the Belle detector at the KEKB e(+)e(-) asymmetric-energy collider. We use B-0 -> K-S(0)pi(0) decays for both mixing-induced and direct CP violating asymmetry measurements and B-0 -> K-L(0)pi(0) decays for the direct CP violation measurement. The CP violation parameters obtained are sin2 phi(eff)(1) - +0.67 +/- 0.31(stat) +/- 0.08(syst) and A(K0 pi 0) - +0.14 +/- 0.13(stat) +/- 0.06(syst). The branching fraction of B-0 -> K-0 pi(0) decay is measured to be B(B-0 -> K-0 pi(0)) - (8.7 +/- 0.5(stat) +/- 0.6(syst)) X 10(-6). The observed A(K0 pi 0) value differs by 1.9 standard deviations from the value expected from an isospin sum rule.
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