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Measurement of CP asymmetries in B-0 -> K-0 pi(0) decays
- Authors
- Fujikawa, M.; Yusa, Y.; Dalseno, J.; Hazumi, M.; Sumisawa, K.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Aziz, T.; Bakich, A. M.; Balagura, V.; Barberio, E.; Belous, K.; Bhardwaj, V.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Chao, Y.; Chen, A.; Cheon, B. G.; Choi, S. -K.; Choi, Y.; Dungel, W.; Eidelman, S.; Feindt, M.; Goldenzweig, P.; Ha, H.; Haba, J.; Han, B. -Y.; Hara, K.; Hasegawa, Y.; Hayasaka, K.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W. -S.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Julius, T.; Kang, J. H.; Kawai, H.; Kiesling, C.; Kim, H. O.; Kim, S. K.; Kim, Y. I.; Kim, Y. J.; Kinoshita, K.; Ko, B. R.; Korpar, S.; Kreps, M.; Krokovny, P.; Kuhr, T.; Kumar, R.; Kumita, T.; Kwon, Y. -J.; Kyeong, S. -H.; Lee, S. -H.; Li, J.; Liu, C.; Liventsev, D.; Louvot, R.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mori, T.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Nishida, S.; Nishimura, K.; Nitoh, O.; Nozaki, T.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H.; Park, H. K.; Pestotnik, R.; Piilonen, L. E.; Rozanska, M.; Sakai, Y.; Schneider, O.; Schwartz, A. J.; Senyo, K.; Shapkin, M.; Shebalin, V.; Shen, C. P.; Shiu, J. -G.; Singh, J. B.; Sokolov, A.; Solovieva, E.; Stanic, S.; Staric, M.; Sumiyoshi, T.; Taylor, G. N.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Vervink, K.; Vinokurova, A.; Wang, C. H.; Wang, P.; Watanabe, Y.; Wedd, R.; Won, E.; Yabsley, B. D.; Yamashita, Y.; Zhang, C. C.; Zhang, Z. P.; Zupanc, A.
- Issue Date
- 1월-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.81, no.1
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 81
- Number
- 1
- ISSN
- 1550-7998
- Abstract
- 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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