Observation of large CP violation in the neutral B meson system - art. no.091802

Authors
Abe, K Abe, K Abe, R Adachi, I Ahn, BS Aihara, H Akatsu, M Alimonti, G Asai, K Asai, M Asano, Y Aso, T Aulchenko, V Aushev, T Bakich, AM Banas, E Behari, S Behara, PK Beiline, D Bondar, A Bozek, A Browder, TE Casey, BCK Chang, P Chao, Y Chen, KF Cheon, BG Chistov, R Choi, SK Choi, Y Dong, LY Dragic, J Drutskoy, A Eidelman, S Eiges, V Enari, Y Enomoto, R Everton, CW Fang, F Fujii, H Fukunaga, C Fukushima, M Gabyshev, N Garmash, A Gershon, TJ Gordon, A Gotow, K Guler, H Guo, R Haba, J Hamasaki, H Hanagaki, K Handa, F Hara, K Hara, T Hastings, NC Hayashii, H Hazumi, M Heenan, EM Higasino, Y Higuchi, I Higuchi, T Hirai, T Hirano, H Hojo, T Hokuue, T Hoshi, Y Hoshina, K Hou, SR Hou, WS Hsu, SC Huang, HC Igarashi, Y Iijima, T Ikeda, H Ikeda, K Inami, K Ishikawa, A Ishino, H Itoh, R Iwai, G Iwasaki, H Iwasaki, Y Jackson, DJ Jalocha, P Jang, HK Jones, M Kagan, R Kakuno, H Kaneko, J Kang, JH Kang, JS Kapusta, P Katayama, N Kawai, H Kawai, H Kawakami, Y Kawamura, N Kawasaki, T Kichimi, H Kim, DW Kim, H Kim, HJ Kim, H Kim, SK Kim, TH Kinoshita, K Kobayashi, S Koishi, S Konishi, H Korotushenko, K Krokovny, P Kulasiri, R Kumar, S Kuniya, T Kurihara, E Kuzmin, A Kwon, YJ Lange, JS Leder, G Lee, MH Lee, SH Leonidopoulos, C Lin, YS Liventsev, D Lu, RS MacNaughton, J Marlow, D Matsubara, T Matsui, S Matsumoto, S Matsumoto, T Mikami, Y Misono, K Miyabayashi, K Miyake, H Miyata, H Moffitt, LC Moloney, GR Moorhead, GF Mori, S Mori, T Murakami, A Nagamine, T Nagasaka, Y Nagashima, Y Nakadaira, T Nakamura, T Nakano, E Nakao, M Nakazawa, H Nam, JW Natkaniec, Z Neichi, K Nishida, S Nitoh, O Noguchi, S Nozaki, T Ogawa, S Ohshima, T Ohshima, Y Okagbe, T Okazaki, T Okuno, S Olsen, SL Ozaki, H Pakhlov, P Palka, H Park, CS Park, CW Park, H Peak, LS Peters, M Piilonen, LE Prebys, E Rodriguez, JL Root, N Rozanska, M Rybicki, K Ryuko, J Sagawa, H Sakai, Y Sakamoto, H Satapathy, M Satpathy, A Schrenk, S Semenov, S Senyo, K Settai, Y Sevior, ME Shibuya, H Shwartz, B Sidorov, A Stanic, S Sugi, A Sugiyama, A Sumisawa, K Sumiyoshi, T Suzuki, JI Suzuki, K Suzuki, S Suzuki, SY Swain, SK Tajima, H Takahashi, T Takasaki, F Takita, M Tamai, K Tamura, N Tanaka, J Tanaka, M Taylor, GN Teramoto, Y Tomoto, M Tomura, T Tovey, SN Trabelsi, K Tsuboyama, T Tsukamoto, T Uehara, S Ueno, K Unno, M Uno, S Ushiroda, Y Vahsen, SE Varvell, KE Wang, CC Wang, CH Wang, JG Wang, MZ Watanabe, Y Won, E Yabsley, BD Yamada, Y Yamaga, M Yamaguchi, A Yamamoto, H Yamanaka, T Yamashita, Y Yamauchi, M Yanaka, S Yashima, J Yokoyama, M Yoshida, K Yusa, Y Yuta, H Zhang, CC Zhang, J Zhao, HW Zheng, Y Zhilich, V Zontar, D
Citation
K. Abe et al., Observation of large CP violation in the neutral B meson system - art. no.091802, PHYS REV L, 8709(9), 2001, pp. 1802
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
8709
Issue
9
Year of publication
2001
Database
ISI
SICI code
0031-9007(20010827)8709:9<1802:OOLCVI>2.0.ZU;2-V
Abstract
We present a measurement of the standard model CP violation parameter sin2 phi (1) based on a 29.1 fb(-1) data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. O ne neutral B meson is fully reconstructed as a J/psiK(S), psi (2S)K-S, Xc1K S, eta K-c(S), J/psiK(L), or J/psiK*(0) decay and the flavor of the accompa nying 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 sin2 phi (1) = 0.99 +/-0.14(stat) +/-0.06(syst). We conclude that we have observed CP violation in the neutral B meson system.