Measurement of forward-backward asymmetry and Wilson coefficients in B --> K*l+l-

A Ishikawa; K Abe; I Adachi; H Aihara; D Anipko; Y Asano; T Aushev; A M Bakich; V Balagura; M Barbero; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bracko; T E Browder; P Chang; Y Chao; A Chen; B G Cheon; Y Choi; Y K Choi; A Chuvikov; J Dalseno; M Danilov; M Dash; A Drutskoy; S Eidelman; S Fratina; N Gabyshev; T Gershon; G Gokhroo; B Golob; A Gorisek; H Ha; J Haba; T Hara; K Hayasaka; H Hayashii; M Hazumi; L Hinz; T Hokuue; Y Hoshi; S Hou; W-S Hou; Y B Hsiung; T Iijima; K Ikado; K Inami; H Ishino; R Itoh; M Iwasaki; Y Iwasaki; J H Kang; S U Kataoka; N Katayama; H Kawai; T Kawasaki; H R Khan; H Kichimi; S K Kim; S M Kim; K Kinoshita; S Korpar; P Krizan; R Kulasiri; R Kumar; C C Kuo; Y-J Kwon; J Lee; S E Lee; T Lesiak; J Li; A Limosani; S-W Lin; D Liventsev; G Majumder; F Mandl; T Matsumoto; A Matyja; S McOnie; W Mitaroff; K Miyabayashi; H Miyake; H Miyata; Y Miyazaki; R Mizuk; G R Moloney; T Nagamine; E Nakano; M Nakao; Z Natkaniec; S Nishida; O Nitoh; T Nozaki; T Ohshima; T Okabe; S Okuno; S L Olsen; Y Onuki; H Ozaki; C W Park; R Pestotnik; L E Piilonen; M Rozanska; Y Sakai; N Sato; N Satoyama; T Schietinger; O Schneider; C Schwanda; A J Schwartz; R Seidl; K Senyo; M E Sevior; M Shapkin; H Shibuya; A Somov; N Soni; R Stamen; S Stanic; M Staric; H Stoeck; K Sumisawa; S Suzuki; O Tajima; F Takasaki; K Tamai; N Tamura; M Tanaka; G N Taylor; Y Teramoto; X C Tian; K Trabelsi; T Tsukamoto; S Uehara; S Uno; P Urquijo; Y Ushiroda; Y Usov; G Varner; S Villa; C C Wang; C H Wang; M-Z Wang; Y Watanabe; E Won; Q L Xie; B D Yabsley; A Yamaguchi; Y Yamashita; M Yamauchi; J Ying; Y Yusa; J Zhang; L M Zhang; Z P Zhang; Belle Collaboration

doi:10.1103/PhysRevLett.96.251801

Measurement of forward-backward asymmetry and Wilson coefficients in B --> K*l+l-

Phys Rev Lett. 2006 Jun 30;96(25):251801. doi: 10.1103/PhysRevLett.96.251801. Epub 2006 Jun 26.

Authors

A Ishikawa¹, K Abe, I Adachi, H Aihara, D Anipko, Y Asano, T Aushev, A M Bakich, V Balagura, M Barbero, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, M Bracko, T E Browder, P Chang, Y Chao, A Chen, B G Cheon, Y Choi, Y K Choi, A Chuvikov, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, S Fratina, N Gabyshev, T Gershon, G Gokhroo, B Golob, A Gorisek, H Ha, J Haba, T Hara, K Hayasaka, H Hayashii, M Hazumi, L Hinz, T Hokuue, Y Hoshi, S Hou, W-S Hou, Y B Hsiung, T Iijima, K Ikado, K Inami, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, J H Kang, S U Kataoka, N Katayama, H Kawai, T Kawasaki, H R Khan, H Kichimi, S K Kim, S M Kim, K Kinoshita, S Korpar, P Krizan, R Kulasiri, R Kumar, C C Kuo, Y-J Kwon, J Lee, S E Lee, T Lesiak, J Li, A Limosani, S-W Lin, D Liventsev, G Majumder, F Mandl, T Matsumoto, A Matyja, S McOnie, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, Y Miyazaki, R Mizuk, G R Moloney, T Nagamine, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, T Ohshima, T Okabe, S Okuno, S L Olsen, Y Onuki, H Ozaki, C W Park, R Pestotnik, L E Piilonen, M Rozanska, Y Sakai, N Sato, N Satoyama, T Schietinger, O Schneider, C Schwanda, A J Schwartz, R Seidl, K Senyo, M E Sevior, M Shapkin, H Shibuya, A Somov, N Soni, R Stamen, S Stanic, M Staric, H Stoeck, K Sumisawa, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, G N Taylor, Y Teramoto, X C Tian, K Trabelsi, T Tsukamoto, S Uehara, S Uno, P Urquijo, Y Ushiroda, Y Usov, G Varner, S Villa, C C Wang, C H Wang, M-Z Wang, Y Watanabe, E Won, Q L Xie, B D Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, J Ying, Y Yusa, J Zhang, L M Zhang, Z P Zhang; Belle Collaboration

Affiliation

¹ Department of Physics, University of Tokyo, Tokyo.

PMID: 16907294
DOI: 10.1103/PhysRevLett.96.251801

Abstract

We report the first measurement of the forward-backward asymmetry and the ratios of Wilson coefficients and in A9/A7 and A10/A7 in B --> K*l+l-, where l represents an electron or a muon. We find evidence for the forward-backward asymmetry with a significance of 3.4sigma. The results are obtained from a data sample containing 386 x 10(6) BB pairs that were collected on the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.