Evidence for direct CP violation in the decay B^{±}→D^{(}*^{)}K^{±}, D→K_{S}^{0}π^{+}π^{-} and measurement of the CKM phase ϕ_{3}
Poluektov, A.; Bondar, A.; Yabsley, B.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Bakich, A.; Balagura, V.; Barberio, E.; Bay, A.; Belous, K.; Bischofberger, M.; Bozek, A.; Bračko, M.; Browder, T.; Chang, M.-C.; Chang, P.; Chen, A.; Chen, K.-F.; Chen, P.; Cheon, B.; Cho, I.-S.; Choi, Y.; Dalseno, J.; Danilov, M.; Dash, M.; Drutskoy, A.; Dungel, W.; Eidelman, S.; Epifanov, D.; Gabyshev, N.; Garmash, A.; Goldenzweig, P.; Golob, B.; Ha, H.; Haba, J.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y.; Hyun, H.; Iijima, T.; Inami, K.; Iwabuchi, M.; Iwasaki, M.; Iwasaki, Y.; Joshi, N.; Julius, T.; Kah, D.; Kang, J.; Kapusta, P.; Katayama, N.; Kawasaki, T.; Kiesling, C.; Kim, H.; Kim, H.; Kim, J.; Kim, M.; Kim, Y.; Kinoshita, K.; Ko, B.; Kodyš, P.; Korpar, S.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumar, R.; Kuzmin, A.; Kwon, Y.-J.; Kyeong, S.-H.; Lange, J.; Lee, M.; Lee, S.-H.; Li, J.; Liu, C.; Liventsev, D.; Louvot, R.; Matyja, A.; Mconie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mohanty, G.; Nakao, M.; Natkaniec, Z.; Neubauer, S.; Nishida, S.; Nishimura, K.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S.; Pakhlova, G.; Park, H.; Petrič, M.; Piilonen, L.; Röhrken, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Schneider, O.; Schwanda, C.; Schwartz, A.; Senyo, K.; Sevior, M.; Shapkin, M.; Shebalin, V.; Shen, C.; Shiu, J.-G.; Shwartz, B.; Singh, J.; Smerkol, P.; Sokolov, A.; Stanič, S.; Starič, M.; Sumisawa, K.; Sumiyoshi, T.; Suzuki, S.; Tanaka, M.; Trabelsi, K.; Tsuboyama, T.; Uehara, S.; Uno, S.; Usov, Y.; Varner, G.; Varvell, K.; Vervink, K.; Vinokurova, A.; Wang, C.; Wang, J.; Wang, M.-Z.; Wang, P.; Wang, X.; Watanabe, M.; Watanabe, Y.; Wedd, R.; Won, E.; Yamamoto, H.; Yamashita, Y.; Zhang, Z.; Zhilich, V.; Zhulanov, V.; Zivko, T.; Zupanc, A.; Zyukova, O.; Belle Collaboration
2010

Abstract

We present a new measurement of the unitarity triangle angle phi(3) using a Dalitz plot analysis of the K-S(0)pi(+)pi(-) decay of the neutral D meson produced in B-+/- -> D-(*()) K-+/- decays. The method exploits the interference between D-0 and (D) over bar (0) to extract the angle phi(3), strong phase delta, and the ratio r of suppressed and allowed amplitudes. We apply this method to a 605 fb(-1) data sample collected by the Belle experiment. The analysis uses three decays: B-+/- -> DK +/-, and B-+/- -> D*K-+/- with D* -> D pi(0) and D* -> D gamma, as well as the corresponding charge-conjugate modes. From a combined maximum likelihood fit to the three modes, we obtain phi(3) = 78.4 degrees (+10.8 degrees)(-11.6 degrees) +/- 3.6 degrees (syst) +/- 8.9 degrees (model). CP conservation in this process is ruled out at the confidence level (1 - CL) = 5 X 10(-4), or 3.5 standard deviations.

Details

Title Evidence for direct CP violation in the decay B^{±}→D^{(}*^{)}K^{±}, D→K_{S}^{0}π^{+}π^{-} and measurement of the CKM phase ϕ_{3}
Author(s) Poluektov, A. ; Bondar, A. ; Yabsley, B. ; Adachi, I. ; Aihara, H. ; Arinstein, K. ; Aulchenko, V. ; Aushev, T. ; Bakich, A. ; Balagura, V. ; Barberio, E. ; Bay, A. ; Belous, K. ; Bischofberger, M. ; Bozek, A. ; Bračko, M. ; Browder, T. ; Chang, M.-C. ; Chang, P. ; Chen, A. ; Chen, K.-F. ; Chen, P. ; Cheon, B. ; Cho, I.-S. ; Choi, Y. ; Dalseno, J. ; Danilov, M. ; Dash, M. ; Drutskoy, A. ; Dungel, W. ; Eidelman, S. ; Epifanov, D. ; Gabyshev, N. ; Garmash, A. ; Goldenzweig, P. ; Golob, B. ; Ha, H. ; Haba, J. ; Hayashii, H. ; Horii, Y. ; Hoshi, Y. ; Hou, W.-S. ; Hsiung, Y. ; Hyun, H. ; Iijima, T. ; Inami, K. ; Iwabuchi, M. ; Iwasaki, M. ; Iwasaki, Y. ; Joshi, N. ; Julius, T. ; Kah, D. ; Kang, J. ; Kapusta, P. ; Katayama, N. ; Kawasaki, T. ; Kiesling, C. ; Kim, H. ; Kim, H. ; Kim, J. ; Kim, M. ; Kim, Y. ; Kinoshita, K. ; Ko, B. ; Kodyš, P. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kuhr, T. ; Kumar, R. ; Kuzmin, A. ; Kwon, Y.-J. ; Kyeong, S.-H. ; Lange, J. ; Lee, M. ; Lee, S.-H. ; Li, J. ; Liu, C. ; Liventsev, D. ; Louvot, R. ; Matyja, A. ; Mconie, S. ; Miyabayashi, K. ; Miyata, H. ; Miyazaki, Y. ; Mizuk, R. ; Mohanty, G. ; Nakao, M. ; Natkaniec, Z. ; Neubauer, S. ; Nishida, S. ; Nishimura, K. ; Nitoh, O. ; Ogawa, S. ; Ohshima, T. ; Okuno, S. ; Olsen, S. ; Pakhlova, G. ; Park, H. ; Petrič, M. ; Piilonen, L. ; Röhrken, M. ; Ryu, S. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Schwanda, C. ; Schwartz, A. ; Senyo, K. ; Sevior, M. ; Shapkin, M. ; Shebalin, V. ; Shen, C. ; Shiu, J.-G. ; Shwartz, B. ; Singh, J. ; Smerkol, P. ; Sokolov, A. ; Stanič, S. ; Starič, M. ; Sumisawa, K. ; Sumiyoshi, T. ; Suzuki, S. ; Tanaka, M. ; Trabelsi, K. ; Tsuboyama, T. ; Uehara, S. ; Uno, S. ; Usov, Y. ; Varner, G. ; Varvell, K. ; Vervink, K. ; Vinokurova, A. ; Wang, C. ; Wang, J. ; Wang, M.-Z. ; Wang, P. ; Wang, X. ; Watanabe, M. ; Watanabe, Y. ; Wedd, R. ; Won, E. ; Yamamoto, H. ; Yamashita, Y. ; Zhang, Z. ; Zhilich, V. ; Zhulanov, V. ; Zivko, T. ; Zupanc, A. ; Zyukova, O. ; Belle Collaboration
Published in Physical Review D
Volume 81
Issue 11
Pages 112002
Date 2010
ISSN 1550-2368
Keywords
DOI https://doi.org/10.1103/PhysRevD.81.112002
Other identifier(s) View record in Web of Science
Laboratories LPHE
Record Appears in Scientific production and competences > SB - School of Basic Sciences > IPHYS - Institute of Physics > LPHE - High Energy Physics Laboratory
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date 2010-11-05

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