Measurement of D0- D ̄ 0 mixing and search for indirect CP violation using D0 → KS0 π+π- Decays MEASUREMENT of D0- D ̄ 0 MIXING and ... T. PENG et al.

T. Peng, Z. P. Zhang, A. Abdesselam, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, D. Červenkov, V. ChekelianA. Chen, B. G. Cheon, I. S. Cho, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. DoleŽal, Z. Drásal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, O. Frost, V. Gaur, S. Ganguly, A. Garmash, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, E. Kato, P. Katrenko, H. Kawai, T. Kawasaki, H. Kichimi, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. KriŽan, P. Krokovny, B. Kronenbitter, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, S. H. Lee, Y. Li, L. Li Gioi, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, P. Lukin, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, P. Pakhlov, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, E. RibeŽl, M. Ritter, M. Röhrken, A. Rostomyan, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, R. Seidl, D. Semmler, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. A. Shibata, J. G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, T. Sumiyoshi, U. Tamponi, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M. Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Y. Yook, C. Z. Yuan, C. C. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

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Abstract

We report a measurement of D0-D̄0 mixing parameters and a search for indirect CP violation through a time-dependent amplitude analysis of D0→KS0π+π- decays. The results are based on 921fb-1 of data accumulated with the Belle detector at the KEKB asymmetric-energy e+e- collider. Assuming CP conservation, we measure the mixing parameters x=(0.56±0.19- 0.09-0.09+0.03+0.06)% and y=(0.30±0.15-0.05-0.06+0.04+0.03)%, where the errors are statistical, experimental systematic, and systematic due to the amplitude model, respectively. With CP violation allowed, the parameters |q/p|=0.90-0.15-0.04-0.05+0.16+0.05+0.06 and arg(q/p)=(-6±11±3- 4+3)° are found to be consistent with conservation of CP symmetry in mixing and in the interference between mixing and decay, respectively.

Original languageEnglish
Article number091103
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume89
Issue number9
DOIs
Publication statusPublished - 2014 May 30

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Peng, T., Zhang, Z. P., Abdesselam, A., Adachi, I., Aihara, H., Arinstein, K., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Bakich, A. M., Bala, A., Bhardwaj, V., Bhuyan, B., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Červenkov, D., ... Zupanc, A. (2014). Measurement of D0- D ̄ 0 mixing and search for indirect CP violation using D0 → KS0 π+π- Decays MEASUREMENT of D0- D ̄ 0 MIXING and ... T. PENG et al. Physical Review D - Particles, Fields, Gravitation and Cosmology, 89(9), [091103]. https://doi.org/10.1103/PhysRevD.89.091103