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Phys Rev Lett. 2001 Mar 19;86(12):2509-14. doi: 10.1103/PhysRevLett.86.2509.

Measurement of the CP violation parameter sin2 phi(1) in B(0)(d) meson decays.

Physical review letters

A Abashian, K Abe, K Abe, I Adachi, B S Ahn, H Aihara, M Akatsu, G Alimonti, K Aoki, K Asai, M Asai, Y Asano, T Aso, V Aulchenko, T Aushev, A M Bakich, E Banas, S Behari, P K Behera, D Beiline, A Bondar, A Bozek, T E Browder, B C Casey, P Chang, Y Chao, B G Cheon, S K Choi, Y Choi, Y Doi, J Dragic, A Drutskoy, S Eidelman, Y Enari, R Enomoto, C W Everton, F Fang, H Fujii, K Fujimoto, Y Fujita, C Fukunaga, M Fukushima, A Garmash, A Gordon, K Gotow, H Guler, R Guo, J Haba, T Haji, H Hamasaki, K Hanagaki, F Handa, K Hara, T Hara, T Haruyama, N C Hastings, K Hayashi, H Hayashii, M Hazumi, E M Heenan, Y Higashi, Y Higashino, I Higuchi, T Higuchi, T Hirai, H Hirano, M Hirose, T Hojo, Y Hoshi, K Hoshina, W S Hou, S C Hsu, H C Huang, Y C Huang, S Ichizawa, Y Igarashi, T Iijima, H Ikeda, K Ikeda, K Inami, Y Inoue, A Ishikawa, H Ishino, R Itoh, G Iwai, M Iwai, M Iwamoto, H Iwasaki, Y Iwasaki, D J Jackson, P Jalocha, H K Jang, M Jones, R Kagan, H Kakuno, J Kaneko, J H Kang, J S Kang, P Kapusta, K Kasami, N Katayama, H Kawai, H Kawai, M Kawai, N Kawamura, T Kawasaki, H Kichimi, D W Kim, H Kim, H J Kim, H Kim, S K Kim, K Kinoshita, S Kobayashi, S Koike, S Koishi, Y Kondo, H Konishi, K Korotushenko, P Krokovny, R Kulasiri, S Kumar, T Kuniya, E Kurihara, A Kuzmin, Y J Kwon, M H Lee, S H Lee, C Leonidopoulos, H B Li, R S Lu, Y Makida, A Manabe, D Marlow, T Matsubara, T Matsuda, S Matsui, S Matsumoto, T Matsumoto, Y Mikami, K Misono, K Miyabayashi, H Miyake, H Miyata, L C Moffitt, A Mohapatra, G R Moloney, G F Moorhead, N Morgan, S Mori, T Mori, A Murakami, T Nagamine, Y Nagasaka, Y Nagashima, T Nakadaira, T Nakamura, E Nakano, M Nakao, H Nakazawa, J W Nam, S Narita, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, Y Ohshima, T Okabe, T Okazaki, S Okuno, S L Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, C S Park, C W Park, H Park, L S Peak, M Peters, L E Piilonen, E Prebys, J L Rodriguez, N Root, M Rozanska, K Rybicki, J Ryuko, H Sagawa, S Saitoh, Y Sakai, H Sakamoto, H Sakaue, M Satapathy, N Sato, A Satpathy, S Schrenk, S Semenov, Y Settai, M E Sevior, H Shibuya, B Shwartz, A Sidorov, V Sidorov, J B Singh, S Stanic, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, J Suzuki, J Suzuki, K Suzuki, S Suzuki, S Y Suzuki, S K Swain, H Tajima, T Takahashi, F Takasaki, M Takita, K Tamai, N Tamura, J Tanaka, M Tanaka, Y Tanaka, G N Taylor, Y Teramoto, M Tomoto, T Tomura, S N Tovey, K Trabelsi, T Tsuboyama, Y Tsujita, T Tsukamoto, T Tsukamoto, S Uehara, K Ueno, N Ujiie, Y Unno, S Uno, Y Ushiroda, Y Usov, S E Vahsen, G Varner, K E Varvell, C C Wang, C H Wang, M Z Wang, T J Wang, Y Watanabe, E Won, B D Yabsley, Y Yamada, M Yamaga, A Yamaguchi, H Yamaguchi, H Yamamoto, T Yamanaka, H Yamaoka, Y Yamaoka, Y Yamashita, M Yamauchi, S Yanaka, M Yokoyama, K Yoshida, Y Yusa, H Yuta, C C Zhang, H W Zhao, J Zhang, Y Zheng, V Zhilich, D Zontar

Affiliations

  1. Aomori University.

PMID: 11289969 DOI: 10.1103/PhysRevLett.86.2509

Abstract

We present a measurement of the standard model CP violation parameter sin2 phi(1) (also known as sin2beta) based on a 10.5 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) collider. One neutral B meson is reconstructed in the J/psiK(S), psi(2S)K(S), chi(c1)K(S), eta(c)K(S), J/psiK(L), or J/psipi(0) CP-eigenstate decay channel and the flavor of the accompanying B meson is identified from its charged particle decay products. From the asymmetry in the distribution of the time interval between the two B-meson decay points, we determine sin2 phi(1) = 0.58(+0.32)(-0.34)(stat)+0.09-0.10(syst).

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