Measurement of /V(ub)/ using inclusive B-->X(u)lnu decays with a novel X(u)-reconstruction method

H Kakuno; K Abe; K Abe; I Adachi; H Aihara; Y Asano; T Aso; V Aulchenko; T Aushev; A M Bakich; Y Ban; S Banerjee; I Bizjak; A Bondar; A Bozek; M Bracko; T E Browder; Y Chao; B G Cheon; R Chistov; S-K Choi; Y Choi; Y K Choi; A Chuvikov; S Cole; M Danilov; M Dash; L Y Dong; J Dragic; A Drutskoy; S Eidelman; V Eiges; N Gabyshev; A Garmash; T Gershon; G Gokhroo; B Golob; J Haba; C Hagner; T Hara; M Hazumi; I Higuchi; L Hinz; T Hokuue; Y Hoshi; W-S Hou; H-C Huang; T Iijima; K Inami; A Ishikawa; R Itoh; H Iwasaki; Y Iwasaki; J H Kang; J S Kang; P Kapusta; N Katayama; H Kawai; T Kawasaki; H Kichimi; H J Kim; J H Kim; K Kinoshita; S Korpar; P Krizan; P Krokovny; Y-J Kwon; G Leder; S H Lee; T Lesiak; J Li; A Limosani; S-W Lin; J MacNaughton; F Mandl; A Matyja; Y Mikami; W Mitaroff; K Miyabayashi; H Miyata; G R Moloney; T Mori; T Nagamine; Y Nagasaka; T Nakadaira; E Nakano; M Nakao; H Nakazawa; Z Natkaniec; S Nishida; O Nitoh; T Nozaki; S Ogawa; T Ohshima; S Okuno; S L Olsen; W Ostrowicz; H Ozaki; P Pakhlov; C W Park; H Park; K S Park; N Parslow; L S Peak; L E Piilonen; H Sagawa; S Saitoh; Y Sakai; O Schneider; A J Schwartz; S Semenov; K Senyo; M E Sevior; H Shibuya; B Shwartz; V Sidorov; J B Singh; N Soni; S Stanic; M Staric; A Sugiyama; T Sumiyoshi; S Y Suzuki; O Tajima; F Takasaki; K Tamai; M Tanaka; Y Teramoto; T Tomura; T Tsuboyama; T Tsukamoto; S Uehara; K Ueno; T Uglov; Y Unno; S Uno; G Varner; K E Varvell; C C Wang; C H Wang; J G Wang; M-Z Wang; M Watanabe; Y Watanabe; B D Yabsley; Y Yamada; A Yamaguchi; H Yamamoto; Y Yamashita; M Yamauchi; H Yanai; Heyoung Yang; Y Yuan; Y Yusa; J Zhang; Z P Zhang; V Zhilich; D Zontar

doi:10.1103/PhysRevLett.92.101801

Measurement of /V(ub)/ using inclusive B-->X(u)lnu decays with a novel X(u)-reconstruction method

Phys Rev Lett. 2004 Mar 12;92(10):101801. doi: 10.1103/PhysRevLett.92.101801. Epub 2004 Mar 10.

Authors

H Kakuno¹, K Abe, K Abe, I Adachi, H Aihara, Y Asano, T Aso, V Aulchenko, T Aushev, A M Bakich, Y Ban, S Banerjee, I Bizjak, A Bondar, A Bozek, M Bracko, T E Browder, Y Chao, B G Cheon, R Chistov, S-K Choi, Y Choi, Y K Choi, A Chuvikov, S Cole, M Danilov, M Dash, L Y Dong, J Dragic, A Drutskoy, S Eidelman, V Eiges, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, J Haba, C Hagner, T Hara, M Hazumi, I Higuchi, L Hinz, T Hokuue, Y Hoshi, W-S Hou, H-C Huang, T Iijima, K Inami, A Ishikawa, R Itoh, H Iwasaki, Y Iwasaki, J H Kang, J S Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, H Kichimi, H J Kim, J H Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, Y-J Kwon, G Leder, S H Lee, T Lesiak, J Li, A Limosani, S-W Lin, J MacNaughton, F Mandl, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyata, G R Moloney, T Mori, T Nagamine, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, S Okuno, S L Olsen, W Ostrowicz, H Ozaki, P Pakhlov, C W Park, H Park, K S Park, N Parslow, L S Peak, L E Piilonen, H Sagawa, S Saitoh, Y Sakai, O Schneider, A J Schwartz, S Semenov, K Senyo, M E Sevior, H Shibuya, B Shwartz, V Sidorov, J B Singh, N Soni, S Stanic, M Staric, A Sugiyama, T Sumiyoshi, S Y Suzuki, O Tajima, F Takasaki, K Tamai, M Tanaka, Y Teramoto, T Tomura, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, T Uglov, Y Unno, S Uno, G Varner, K E Varvell, C C Wang, C H Wang, J G Wang, M-Z Wang, M Watanabe, Y Watanabe, B D Yabsley, Y Yamada, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, H Yanai, Heyoung Yang, Y Yuan, Y Yusa, J Zhang, Z P Zhang, V Zhilich, D Zontar

Affiliation

¹ Tokyo Institute of Technology, Tokyo.

PMID: 15089194
DOI: 10.1103/PhysRevLett.92.101801

Abstract

We report the measurement of an inclusive partial branching fraction for charmless semileptonic B decay and the extraction of /V(ub)/. Candidates for B-->X(u)lnu are identified with a novel X(u) reconstruction method based on neutrino reconstruction via missing 4-momentum and a technique called "simulated annealing." Based on 86.9 fb(-1) of data taken with the Belle detector, we obtain DeltaB(B-->X(u)lnu;M(X)<1.7 GeV/c2,q2>8.0 GeV2/c2)=[7.37+/-0.89(stat)+/-1.12(syst)+/-0.55(b-->c)+/-0.24(b-->u)]x10(-4) and determine |V(ub)|=[4.66+/-0.28(stat)+/-0.35(syst)+/-0.17(b-->c)+/-0.08(b-->u)+/-0.58(theory)]x10(-3).