Observation of the decay B(0)-->J/psieta

M-C Chang; K Abe; K Abe; I Adachi; H Aihara; D Anipko; K Arinstein; T Aushev; A M Bakich; E Barberio; A Bay; I Bedny; K Belous; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; T E Browder; P Chang; Y Chao; A Chen; K-F Chen; W T Chen; B G Cheon; R Chistov; S-K Choi; Y Choi; Y K Choi; S Cole; J Dalseno; M Danilov; M Dash; A Drutskoy; S Eidelman; S Fratina; N Gabyshev; T Gershon; A Go; G Gokhroo; H Ha; J Haba; T Hara; K Hayasaka; M Hazumi; D Heffernan; T Hokuue; Y Hoshi; S Hou; W-S Hou; Y B Hsiung; T Iijima; K Inami; A Ishikawa; H Ishino; R Itoh; M Iwasaki; Y Iwasaki; H Kaji; J H Kang; S U Kataoka; H Kawai; T Kawasaki; H R Khan; H Kichimi; S K Kim; Y J Kim; K Kinoshita; S Korpar; P Krizan; P Krokovny; R Kulasiri; R Kumar; C C Kuo; A Kuzmin; Y-J Kwon; G Leder; M J Lee; S E Lee; T Lesiak; A Limosani; S-W Lin; G Majumder; F Mandl; T Matsumoto; A Matyja; S McOnie; W Mitaroff; K Miyabayashi; H Miyake; H Miyata; Y Miyazaki; R Mizuk; T Mori; T Nagamine; I Nakamura; E Nakano; M Nakao; S Nishida; O Nitoh; S Noguchi; S Ogawa; T Ohshima; S Okuno; S L Olsen; Y Onuki; H Ozaki; P Pakhlov; G Pakhlova; H Palka; H Park; K S Park; L S Peak; R Pestotnik; L E Piilonen; Y Sakai; N Satoyama; T Schietinger; O Schneider; J Schümann; A J Schwartz; R Seidl; K Senyo; M Shapkin; H Shibuya; B Shwartz; J B Singh; A Somov; N Soni; S Stanic; M Staric; H Stoeck; K Sumisawa; T Sumiyoshi; S Suzuki; O Tajima; F Takasaki; K Tamai; N Tamura; M Tanaka; G N Taylor; Y Teramoto; X C Tian; I Tikhomirov; K Trabelsi; T Tsuboyama; T Tsukamoto; S Uehara; T Uglov; S Uno; P Urquijo; Y Ushiroda; Y Usov; G Varner; K E Varvell; S Villa; C C Wang; C H Wang; M-Z Wang; Y Watanabe; R Wedd; E Won; Q L Xie; A Yamaguchi; Y Yamashita; M Yamauchi; Y Yusa; C C Zhang; L M Zhang; Z P Zhang; A Zupanc; Belle Collaboration

doi:10.1103/PhysRevLett.98.131803

Observation of the decay B(0)-->J/psieta

Phys Rev Lett. 2007 Mar 30;98(13):131803. doi: 10.1103/PhysRevLett.98.131803. Epub 2007 Mar 30.

Authors

M-C Chang¹, K Abe, K Abe, I Adachi, H Aihara, D Anipko, K Arinstein, T Aushev, A M Bakich, E Barberio, A Bay, I Bedny, K Belous, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, T E Browder, P Chang, Y Chao, A Chen, K-F Chen, W T Chen, B G Cheon, R Chistov, S-K Choi, Y Choi, Y K Choi, S Cole, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, S Fratina, N Gabyshev, T Gershon, A Go, G Gokhroo, H Ha, J Haba, T Hara, K Hayasaka, M Hazumi, D Heffernan, T Hokuue, Y Hoshi, S Hou, W-S Hou, Y B Hsiung, T Iijima, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, H Kaji, J H Kang, S U Kataoka, H Kawai, T Kawasaki, H R Khan, H Kichimi, S K Kim, Y J Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kulasiri, R Kumar, C C Kuo, A Kuzmin, Y-J Kwon, G Leder, M J Lee, S E Lee, T Lesiak, A Limosani, S-W Lin, G Majumder, F Mandl, T Matsumoto, A Matyja, S McOnie, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, Y Miyazaki, R Mizuk, T Mori, T Nagamine, I Nakamura, E Nakano, M Nakao, S Nishida, O Nitoh, S Noguchi, S Ogawa, T Ohshima, S Okuno, S L Olsen, Y Onuki, H Ozaki, P Pakhlov, G Pakhlova, H Palka, H Park, K S Park, L S Peak, R Pestotnik, L E Piilonen, Y Sakai, N Satoyama, T Schietinger, O Schneider, J Schümann, A J Schwartz, R Seidl, K Senyo, M Shapkin, H Shibuya, B Shwartz, J B Singh, A Somov, N Soni, S Stanic, M Staric, H Stoeck, K Sumisawa, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, G N Taylor, Y Teramoto, X C Tian, I Tikhomirov, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, S Uno, P Urquijo, Y Ushiroda, Y Usov, G Varner, K E Varvell, S Villa, C C Wang, C H Wang, M-Z Wang, Y Watanabe, R Wedd, E Won, Q L Xie, A Yamaguchi, Y Yamashita, M Yamauchi, Y Yusa, C C Zhang, L M Zhang, Z P Zhang, A Zupanc; Belle Collaboration

Affiliation

¹ Department of Physics, Fu Jen Catholic University, Taipei.

PMID: 17501188
DOI: 10.1103/PhysRevLett.98.131803

Abstract

We report the first observation of B(0)-->J/psieta decay. These results are obtained from a data sample that contains 449 x10(6) BB[over] pairs accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal with a significance of 8.1 sigma and obtain a branching fraction of (9.5+/-1.7(stat)+/-0.8(syst)) x 10(-6).