Measurement of D0-->pilnu(Klnu) form factors and absolute branching fractions

L Widhalm; K Abe; K Abe; I Adachi; H Aihara; K Arinstein; Y Asano; T Aushev; A M Bakich; V Balagura; E Barberio; M Barbero; A Bay; I Bedny; K Belous; U Bitenc; I Bizjak; S Blyth; A Bondar; A Bozek; M Bracko; T E Browder; P Chang; A Chen; W T Chen; Y Choi; A Chuvikov; S Cole; J Dalseno; M Danilov; M Dash; A Drutskoy; S Eidelman; N Gabyshev; A Garmash; T Gershon; G Gokhroo; B Golob; A Gorisek; H Ha; J Haba; T Hara; K Hayasaka; H Hayashii; M Hazumi; T Hokuue; Y Hoshi; S Hou; W-S Hou; T Iijima; K Ikado; A Imoto; K Inami; A Ishikawa; R Itoh; M Iwasaki; Y Iwasaki; H Kakuno; J H Kang; P Kapusta; S U Kataoka; H Kawai; T Kawasaki; H R Khan; H J Kim; H O Kim; K Kinoshita; P Krokovny; R Kulasiri; R Kumar; C C Kuo; Y-J Kwon; J S Lange; G Leder; J Lee; T Lesiak; J Li; A Limosani; S-W Lin; G Majumder; F Mandl; T Matsumoto; A Matyja; S McOnie; W Mitaroff; H Miyata; Y Miyazaki; D Mohapatra; I Nakamura; Z Natkaniec; S Nishida; O Nitoh; S Ogawa; T Ohshima; T Okabe; S Okuno; S L Olsen; P Pakhlov; C W Park; L S Peak; R Pestotnik; L E Piilonen; Y Sakai; N Sato; N Satoyama; K Sayeed; T Schietinger; O Schneider; C Schwanda; A J Schwartz; K Senyo; M E Sevior; M Shapkin; H Shibuya; B Shwartz; A Somov; R Stamen; S Stanic; M Staric; H Stoeck; S Y Suzuki; F Takasaki; K Tamai; M Tanaka; G N Taylor; Y Teramoto; X C Tian; T Tsukamoto; S Uehara; T Uglov; K Ueno; Y Unno; S Uno; P Urquijo; Y Usov; G Varner; S Villa; C C Wang; C H Wang; M-Z Wang; Y Watanabe; E Won; B D Yabsley; A Yamaguchi; Y Yamashita; M Yamauchi; J Ying; L M Zhang; Z P Zhang; D Zürcher; Belle Collaboration

doi:10.1103/PhysRevLett.97.061804

Measurement of D0-->pilnu(Klnu) form factors and absolute branching fractions

Phys Rev Lett. 2006 Aug 11;97(6):061804. doi: 10.1103/PhysRevLett.97.061804. Epub 2006 Aug 11.

Authors

L Widhalm¹, K Abe, K Abe, I Adachi, H Aihara, K Arinstein, Y Asano, T Aushev, A M Bakich, V Balagura, E Barberio, M Barbero, A Bay, I Bedny, K Belous, U Bitenc, I Bizjak, S Blyth, A Bondar, A Bozek, M Bracko, T E Browder, P Chang, A Chen, W T Chen, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, A Gorisek, H Ha, J Haba, T Hara, K Hayasaka, H Hayashii, M Hazumi, T Hokuue, Y Hoshi, S Hou, W-S Hou, T Iijima, K Ikado, A Imoto, K Inami, A Ishikawa, R Itoh, M Iwasaki, Y Iwasaki, H Kakuno, J H Kang, P Kapusta, S U Kataoka, H Kawai, T Kawasaki, H R Khan, H J Kim, H O Kim, K Kinoshita, P Krokovny, R Kulasiri, R Kumar, C C Kuo, Y-J Kwon, J S Lange, G Leder, J Lee, T Lesiak, J Li, A Limosani, S-W Lin, G Majumder, F Mandl, T Matsumoto, A Matyja, S McOnie, W Mitaroff, H Miyata, Y Miyazaki, D Mohapatra, I Nakamura, Z Natkaniec, S Nishida, O Nitoh, S Ogawa, T Ohshima, T Okabe, S Okuno, S L Olsen, P Pakhlov, C W Park, L S Peak, R Pestotnik, L E Piilonen, Y Sakai, N Sato, N Satoyama, K Sayeed, T Schietinger, O Schneider, C Schwanda, A J Schwartz, K Senyo, M E Sevior, M Shapkin, H Shibuya, B Shwartz, A Somov, R Stamen, S Stanic, M Staric, H Stoeck, S Y Suzuki, F Takasaki, K Tamai, M Tanaka, G N Taylor, Y Teramoto, X C Tian, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, P Urquijo, Y Usov, G Varner, S Villa, C C Wang, C H Wang, M-Z Wang, Y Watanabe, E Won, B D Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, J Ying, L M Zhang, Z P Zhang, D Zürcher; Belle Collaboration

Affiliation

¹ Institute of High Energy Physics, Vienna, Austria.

PMID: 17026160
DOI: 10.1103/PhysRevLett.97.061804

Abstract

Using a 282 fb-1 data sample collected by the Belle experiment at the KEKB e+e- collider, we study D0 decays to K-l+nu and pi-l+nu final states. The D0 flavor and momentum are tagged through a full reconstruction of the recoiling charm meson and additional mesons from fragmentation. The reconstruction method provides very good resolution in neutrino momentum and in q2=(pl+pnu)2. Normalizing to the total number of D0 tags, we measure the absolute branching fractions to be B(D0-->Klnu)=(3.45+/-0.07stat+/-0.20syst)% and B(D0-->pilnu)=(0.255+/-0.019stat+/-0.016syst)% and the semileptonic form factors (within the modified pole model) f+K(0)=0.695+/-0.007stat+/-0.022syst and f+pi(0)=0.624+/-0.020stat+/-0.030syst.