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arXiv · 1204.6561

First Measurement of phi_3 with a Model-independent Dalitz Plot Analysis of B->DK, D->KsPiPi Decay

Belle collaboration·H. Aihara·K. Arinstein·D. M. Asner·V. Aulchenko·T. Aushev·A. M. Bakich·K. Belous·B. Bhuyan·M. Bischofberger·A. Bondar·G. Bonvicini·A. Bozek·M. Bračko·T. E. Browder·M. -C. Chang·P. Chang·B. G. Cheon·K. Chilikin·R. Chistov·K. Cho·Y. Choi·J. Dalseno·Z. Doležal·A. Drutskoy·S. Eidelman·D. Epifanov·J. E. Fast·M. Feindt·V. Gaur·N. Gabyshev·A. Garmash·Y. M. Goh·B. Golob·J. Haba·H. Hayashii·Y. Horii·Y. Hoshi·W. -S. Hou·Y. B. Hsiung·H. J. Hyun·T. Iijima·A. Ishikawa·R. Itoh·M. Iwabuchi·T. Julius·J. H. Kang·T. Kawasaki·C. Kiesling·H. J. Kim·H. O. Kim·J. B. Kim·J. H. Kim·K. T. Kim·M. J. Kim·Y. J. Kim·K. Kinoshita·B. R. Ko·S. Koblitz·P. Kodyš·S. Korpar·P. Križan·P. Krokovny·B. Kronenbitter·T. Kuhr·T. Kumita·A. Kuzmin·Y. -J. Kwon·S. -H. Lee·J. Li·Y. Li·J. Libby·C. Liu·Y. Liu·Z. Q. Liu·D. Liventsev·R. Louvot·D. Matvienko·K. Miyabayashi·H. Miyata·R. Mizuk·G. B. Mohanty·A. Moll·T. Mori·N. Muramatsu·Y. Nagasaka·E. Nakano·M. Nakao·Z. Natkaniec·S. Nishida·O. Nitoh·S. Ogawa·T. Ohshima·S. Okuno·S. L. Olsen·G. Pakhlova·C. W. Park·H. Park·H. K. Park·K. S. Park
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Abstract

We present the first measurement of the angle phi_3 of the Unitarity Triangle using a model-independent Dalitz plot analysis of B->DK, D->KsPiPi decays. The method uses an input measurements of the strong phase of the D->KsPiPi amplitude from the CLEO collaboration. The result is based on the full data set of 772x10^6 BBbar pairs collected by the Belle experiment at the Upsilon(4S) resonance. We obtain phi_3 = (77.3^{+15.1}_{-14.9} +- 4.1 +- 4.3)^{\circ} and the suppressed amplitude ratio r_B = 0.145 +- 0.030 +- 0.010 +- 0.011. Here the first error is statistical, the second is the experimental systematic uncertainty, and the third is the error due to the precision of the strong-phase parameters obtained by CLEO.

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Belle collaboration, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, K. Belous, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M. -C. Chang, P. Chang, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, Y. Choi, J. Dalseno, Z. Doležal, A. Drutskoy, S. Eidelman, D. Epifanov, J. E. Fast, M. Feindt, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, J. Haba, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, M. Iwabuchi, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Koblitz, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, Y. -J. Kwon, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, G. Pakhlova, C. W. Park, H. Park, H. K. Park, K. S. Park. 2012-07-31. First Measurement of phi_3 with a Model-independent Dalitz Plot Analysis of B->DK, D->KsPiPi Decay. https://doi.org/10.1103/physrevd.85.112014

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