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Evidence for the suppressed decay B- -> DK-, D -> K+ pi(-)pi(0)
- Authors
- Nayak, M.; Libby, J.; Trabelsi, K.; Adachi, I.; Aihara, H.; Asner, D. M.; Aushev, T.; Bakich, A. M.; Bala, A.; Behera, P.; Belous, K.; Bhardwaj, V.; Bonvicini, G.; Bozek, A.; Bracko, M.; Browder, T. E.; Cervenkov, D.; Chang, M-C.; Chang, P.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chistov, R.; Cho, I-S.; Cho, K.; Chobanova, V.; Choi, Y.; Cinabro, D.; Dalseno, J.; Danilov, M.; Dolezal, Z.; Drasal, Z.; Dutta, D.; Eidelman, S.; Esen, S.; Farhat, H.; Fast, J. E.; Ferber, T.; Gaur, V.; Gabyshev, N.; Ganguly, S.; Gillard, R.; Goh, Y. M.; Golob, B.; Haba, J.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W-S.; Hyun, H. J.; Iijima, T.; Ishikawa, A.; Iwashita, T.; Jaegle, I.; Julius, T.; Kah, D. H.; Kato, E.; Kim, D. Y.; Kim, H. J.; Kim, J. B.; Kim, M. J.; Kim, Y. J.; Kinoshita, K.; Klucar, J.; Ko, B. R.; Kodys, P.; Korpar, S.; Krishnan, P.; Krizan, P.; Krokovny, P.; Kuhr, T.; Kumita, T.; Kuzmin, A.; Kwon, Y-J.; Lee, S-H.; Li, J.; Li, Y.; Gioi, L. Li; Liu, Y.; Liventsev, D.; Lukin, P.; Miyake, H.; Mizuk, R.; Mohanty, G. B.; Moll, A.; Mori, T.; Muramatsu, N.; Mussa, R.; Nagasaka, Y.; Nakao, M.; Nedelkovska, E.; Negishi, K.; Ng, C.; Nisar, N. K.; Nitoh, O.; Ogawa, S.; Okuno, S.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H.; Pedlar, T. K.; Petric, M.; Piilonen, L. E.; Ritter, M.; Roehrken, M.; Rostomyan, A.; Sahoo, H.; Saito, T.; Sakai, Y.; Sandilya, S.; Santelj, L.; Sanuki, T.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Schwartz, A. J.; Senyo, K.; Seon, O.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shibata, T-A.; Shiu, J-G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Sohn, Y-S.; Sokolov, A.; Solovieva, E.; Staric, M.; Steder, M.; Suzuki, Z.; Tamponi, U.; Tatishvili, G.; Teramoto, Y.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Vahsen, S. E.; Van Hulse, C.; Vanhoefer, P.; Varner, G.; Varvell, K. E.; Wagner, M. N.; Wang, C. H.; Wang, M-Z.; Watanabe, Y.; Williams, K. M.; Won, E.; Yamashita, Y.; Yashchenko, S.; Yusa, Y.; Zhilich, V.; Zhulanov, V.; Zupanc, A.
- Issue Date
- 14-11월-2013
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.88, no.9
- Indexed
- SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 88
- Number
- 9
- ISSN
- 2470-0010
- Abstract
- We report a study of the suppressed decay B- -> DK-, D -> K+ pi(-) pi(0), where D denotes either a D-0 or a (D) over bar (0) meson. The decay is sensitive to the CP-violating parameter phi(3). Using a data sample of 772 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector, we measure the ratio of branching fractions of the above suppressed decay to the favored decay B- -> DK-, D -> K- pi(+) pi(0). Our result is R-DK = [1.98 +/- 0.62 (stat) +/- 0.24 (syst)] x 10(-2), which indicates the first evidence of the signal for this suppressed decay with a significance of 3.2 standard deviations. We measure the direct CP asymmetry between the suppressed B- and B+ decays to be A(DK) = 0.41 +/- 0.30(stat) +/- 0.05(syst). We also report measurements for the analogous quantities R-D pi and A(D pi) for the decay B- -> D pi(-), D -> K+ pi(-)pi(0).
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