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Measurement of CP violating asymmetries in B-0 -> (K+K-KS0) decays with a time-dependent Dalitz approach
- Authors
- Nakahama, Y.; Sumisawa, K.; Aihara, H.; Arinstein, K.; Aushev, T.; Aziz, T.; Bakich, A. M.; Balagura, V.; Belous, K.; Bhardwaj, V.; Bischofberger, M.; Bondar, A.; Bonvicini, G.; Bozek, A.; Bracko, M.; Browder, T. E.; Chang, P.; Chao, Y.; Chen, A.; Chen, P.; Cheon, B. G.; Chiang, C. -C.; Cho, I. -S.; Choi, Y.; Dalseno, J.; Das, A.; Dolezal, Z.; Drasal, Z.; Drutskoy, A.; Eidelman, S.; Goldenzweig, P.; Golob, B.; Haba, J.; Hara, K.; Hayasaka, K.; Hazumi, M.; Higuchi, T.; Horii, Y.; Hoshi, Y.; Hou, W. -S.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Inami, K.; Itoh, R.; Iwabuchi, M.; Iwasaki, M.; Iwasaki, Y.; Julius, T.; Kang, J. H.; Kapusta, P.; Katayama, N.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, H. J.; Kim, J. H.; Kim, M. J.; Ko, B. R.; Kodys, P.; Korpar, S.; Krizan, P.; Krokovny, P.; Kuhr, T.; Kumita, T.; Kyeong, S. -H.; Lee, M. J.; Lee, S. -H.; Liu, Y.; Louvot, R.; Matyja, A.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mohanty, G. B.; Nakano, E.; Nakao, M.; Nakazawa, H.; Neubauer, S.; Nishida, S.; Nishimura, K.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Olsen, S. L.; Ostrowicz, W.; Ozaki, H.; Park, C. W.; Park, H.; Park, H. K.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Prim, M.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shiu, J. -G.; Shwartz, B.; Smerkol, P.; Solovieva, E.; Stanic, S.; Staric, M.; Sumiyoshi, T.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Ushiroda, Y.; Varner, G.; Varvell, K. E.; Vervink, K.; Wang, C. H.; Wang, P.; Wang, X. L.; Watanabe, Y.; Wedd, R.; Won, E.; Yamashita, Y.; Yusa, Y.; Zander, D.; Zhang, Z. P.; Zhilich, V.; Zhou, P.; Zivko, T.; Zupanc, A.
- Issue Date
- Oct-2010
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.82, no.7, pp.1 - 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 82
- Number
- 7
- Start Page
- 1
- End Page
- 12
- ISSN
- 1550-7998
- Abstract
- We report a measurement of CP violating asymmetries in B-0 ((B-0) over bar) -> (K+K-KS0) decays with a time-dependent Dalitz approach. This analysis is based on a data sample of 657 x 10(6) B (B) over bar pairs accumulated at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. As the result of an unbinned maximum likelihood fit to the selected candidates, the mixing-induced and direct CP violation parameters phi(eff)(1) and A(CP) are obtained for B-0 -> phi(1020)K-S(0), B-0 -> f(0)(980)K-S(0), and other B-0 -> (K+K-KS0) decays. We find four solutions that describe the data. There are phi(eff)(1) (B-0 -> phi(1020)K-S(0)) = (32.2 +/- 9.0 +/- 2.6 +/- 1.4); phi(eff)(1)(B-0 -> phi(1020)K-S(0)) = 26.2 +/- 8.8 +/- 2.7 +/- 1.2); phi(eff)(1)(B-0 phi(1020)K-S(0)) = (27.3 +/- 8.6 +/- 2.8 +/- 1.3); and phi(eff)(1)(B-0 -> phi(1020)K-S(0)) = (24.3 +/- 8.0 +/- 2.9 +/- 5.2). The values for the CP violating phase in B-0 -> phi(1020)K-S(0) are similar, but other properties of the Dalitz plot are quite different for the four solutions. These four solutions have consistent phi(eff)(1) values for all three B-meson decay channels and none of them deviates significantly from the values measured in B -> (c (c) over bar )K-0 decays with the currently available statistics. In addition, we find no significant direct CP violation.
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Related Researcher
- Cheon, Byung Gu
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)