Authors
Kazuo Abe, R Abe, I Adachi, Byoung Sup Ahn, H Aihara, M Akatsu, G Alimonti, K Asai, M Asai, Y Asano, T Aso, V Aulchenko, T Aushev, AM Bakich, E Banas, S Behari, PK Behera, D Beiline, A Bondar, A Bozek, TE Browder, BCK Casey, P Chang, Y Chao, K-F Chen, BG Cheon, R Chistov, S-K Choi, Y Choi, LY Dong, J Dragic, A Drutskoy, S Eidelman, V Eiges, Y Enari, R Enomoto, CW Everton, F Fang, H Fujii, C Fukunaga, M Fukushima, N Gabyshev, A Garmash, TJ Gershon, A Gordon, K Gotow, H Guler, R Guo, J Haba, H Hamasaki, K Hanagaki, F Handa, K Hara, T Hara, NC Hastings, H Hayashii, M Hazumi, EM Heenan, Y Higasino, I Higuchi, T Higuchi, T Hirai, H Hirano, T Hojo, T Hokuue, Y Hoshi, K Hoshina, SR Hou, W-S Hou, S-C Hsu, H-C Huang, Y Igarashi, T Iijima, H Ikeda, K Ikeda, K Inami, A Ishikawa, H Ishino, R Itoh, G Iwai, H Iwasaki, Y Iwasaki, DJ Jackson, P Jalocha, HK Jang, M Jones, R Kagan, H Kakuno, J Kaneko, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, DW Kim, Heejong Kim, HJ Kim, Hyunwoo Kim, SK Kim, TH Kim, K Kinoshita, S Kobayashi, S Koishi, H Konishi, K Korotushenko, P Krokovny, R Kulasiri, S Kumar, T Kuniya, E Kurihara, A Kuzmin, Y-J Kwon, JS Lange, G Leder, MH Lee, SH Lee, C Leonidopoulos, Y-S Lin, D Liventsev, R-S Lu, J MacNaughton, D Marlow, T Matsubara, S Matsui, S Matsumoto, T Matsumoto, Y Mikami, K Misono, K Miyabayashi, H Miyake, H Miyata, LC Moffitt, GR Moloney, GF Moorhead, S Mori, T Mori, A Murakami, T Nagamine, Y Nagasaka, Y Nagashima, T Nakadaira, T Nakamura, E Nakano, M Nakao, H Nakazawa, JW Nam
Publication date
2001/8/14
Journal
Physical review letters
Volume
87
Issue
9
Pages
091802
Publisher
American Physical Society
Description
We present a measurement of the standard model CP violation parameter sin 2 φ 1 based on a 29.1 fb− 1 data sample collected at the ϒ (4 S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e− collider. One neutral B meson is fully reconstructed as a J/ψ K S, ψ (2 S) K S, χ c 1 K S, η c K S, J/ψ K L, or J/ψ K* 0 decay and the flavor of the accompanying B meson is identified from its decay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we determine sin 2 φ 1= 0.99±0.14 (stat)±0.06 (syst). We conclude that we have observed CP violation in the neutral B meson system.
Total citations
Scholar articles
K Abe, R Abe, I Adachi, BS Ahn, H Aihara, M Akatsu… - Physical review letters, 2001