N Dash, S Bahinipati, V Bhardwaj, K Trabelsi, I Adachi, H Aihara, S Al Said, D M Asner, V Aulchenko, T Aushev, R Ayad, V Babu, I Badhrees, A M Bakich, V Bansal, E Barberio, B Bhuyan, J Biswal, A Bobrov, A Bondar, G Bonvicini, A Bozek, M Bračko, F Breibeck, T E Browder, D Červenkov, M-C Chang, V Chekelian, A Chen, B G Cheon, K Chilikin, K Cho, Y Choi, D Cinabro, S Di Carlo, Z Doležal, Z Drásal, D Dutta, S Eidelman, D Epifanov, H Farhat, J E Fast, T Ferber, B G Fulsom, V Gaur, N Gabyshev, A Garmash, R Gillard, P Goldenzweig, J Haba, T Hara, K Hayasaka, H Hayashii, M T Hedges, W-S Hou, T Iijima, K Inami, A Ishikawa, R Itoh, Y Iwasaki, W W Jacobs, I Jaegle, H B Jeon, Y Jin, D Joffe, K K Joo, T Julius, J Kahn, A B Kaliyar, G Karyan, P Katrenko, T Kawasaki, C Kiesling, D Y Kim, H J Kim, J B Kim, K T Kim, M J Kim, S H Kim, Y J Kim, K Kinoshita, P Kodyš, S Korpar, D Kotchetkov, P Križan, P Krokovny, T Kuhr, R Kulasiri, R Kumar, T Kumita, A Kuzmin, Y-J Kwon, J S Lange, I S Lee, C H Li, L Li, Y Li, L Li Gioi, J Libby, D Liventsev, M Lubej, T Luo, M Masuda, D Matvienko, M Merola, K Miyabayashi, H Miyata, R Mizuk, G B Mohanty, S Mohanty, H K Moon, T Mori, R Mussa, E Nakano, M Nakao, T Nanut, K J Nath, Z Natkaniec, M Nayak, M Niiyama, N K Nisar, S Nishida, S Ogawa, S Okuno, H Ono, P Pakhlov, G Pakhlova, B Pal, S Pardi, C-S Park, H Park, S Paul, T K Pedlar, L Pesántez, R Pestotnik, L E Piilonen, K Prasanth, M Ritter, A Rostomyan, H Sahoo, Y Sakai, S Sandilya, L Santelj, T Sanuki, Y Sato, V Savinov, O Schneider, G Schnell, C Schwanda, A J Schwartz, Y Seino, K Senyo, M E Sevior, V Shebalin, C P Shen, T-A Shibata, J-G Shiu, B Shwartz, F Simon, A Sokolov, E Solovieva, M Starič, J F Strube, J Stypula, K Sumisawa, T Sumiyoshi, M Takizawa, U Tamponi, K Tanida, F Tenchini, M Uchida, T Uglov, Y Unno, S Uno, P Urquijo, Y Usov, C Van Hulse, G Varner, V Vorobyev, A Vossen, E Waheed, C H Wang, M-Z Wang, P Wang, M Watanabe, Y Watanabe, E Widmann, K M Williams, E Won, Y Yamashita, H Ye, J Yelton, Y Yook, C Z Yuan, Y Yusa, Z P Zhang, V Zhilich, V Zhukova, V Zhulanov, A Zupanc
We report a study of the decay D^{0}→K_{S}^{0}K_{S}^{0} using 921 fb^{-1} of data collected at or near the ϒ(4S) and ϒ(5S) resonances with the Belle detector at the KEKB asymmetric energy e^{+}e^{-} collider. The measured time-integrated CP asymmetry is A_{CP}(D^{0}→K_{S}^{0}K_{S}^{0})=(-0.02±1.53±0.02±0.17)%, and the branching fraction is B(D^{0}→K_{S}^{0}K_{S}^{0})=(1.321±0.023±0.036±0.044)×10^{-4}, where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D^{0}→K_{S}^{0}π^{0})...
October 27, 2017: Physical Review Letters