Measurement of D-0-(D) over bar(0) mixing and search for indirect CP violation using D-0 -> K-S(0)pi(+)pi(-) decays

/ Authors

T. Peng, Z. P. Zhang, A. Abdesselam, I. Adachi, H. Aihara, K. Arinstein, D. Asner, V. Aulchenko, T. Aushev, R. Ayad

and 175 more authors

A. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bobrov, A. Bondar, G. Bonvicini, A. Bozek, D. Červenkov, V. Chekelian, A. Chen, B. Cheon, I. Cho, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, Z. Dr'asal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. Fast, T. Ferber, O. Frost, V. Gaur, S. Ganguly, A. Garmash, R. Gillard, Y. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, Y. Hoshi, W. Hou, H. 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. Ko, P. Kodys, S. Korpar, P. Križan, P. Krokovny, B. Kronenbitter, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, S. 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. Mohanty, A. Moll, R. Mussa, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. Nisar, S. Nishida, O. Nitoh, S. Ogawa, P. Pakhlov, H. Park, H. K. Park, T. Pedlar, R. Pestotnik, M. Petrić, L. 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. Schwartz, R. Seidl, D. Semmler, K. Senyo, M. Sevior, M. Shapkin, V. Shebalin, C. Shen, T. Shibata, J. Shiu, B. Shwartz, A. Sibidanov, F. Simon, Y. 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. Varvell, A. Vinokurova, V. Vorobyev, M. Wagner, C. H. Wang, M. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, S. Wehle, K. M. Williams, E. Won, Y. Yamashita, S. Yashchenko, Y. Yook, C. Yuan, C. C. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

/ Abstract

We report a measurement of D-0-(D) over bar(0) mixing parameters and a search for indirect CP violation through a time-dependent amplitude analysis of D-0 -> K-S(0)pi(+)pi(-) decays. The results are based on 921 fb(-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 vertical bar q/p vertical bar = 0.90(-0.15-0.04-0.05)(+0.16+0.05+0.06) and arg(q/p) = (- 6 +/- 11 +/- 3(-4)(+3))degrees are found to be consistent with conservation of CP symmetry in mixing and in the interference between mixing and decay, respectively.

Journal: Physical Review D

DOI: 10.1103/PhysRevD.89.091103