Measurement of|Vub|from Inclusive Charmless SemileptonicBDecays Academic Article uri icon

abstract

  • We present the partial branching fraction for inclusive charmless semileptonic B decays and the corresponding value of the Cabibbo-Kobayashi-Maskawa matrix element |V{ub}|, using a multivariate analysis method to access approximately 90% of the B-->X{u}lnu phase space. This approach dramatically reduces the theoretical uncertainties from the b-quark mass and nonperturbative QCD compared to all previous inclusive measurements. The results are based on a sample of 657x10{6} BB[over ] pairs collected with the Belle detector. We find that DeltaB(B-->X{u}lnu;p(l){*B}>1.0 GeV/c)=1.963x(1+/-0.088{stat}+/-0.081{syst})x10{-3}. Corresponding values of |V{ub}| are extracted using several theoretical calculations.

authors

  • Diezmann, Carmel
  • Urquijo, P
  • Barberio, E
  • Adachi, I
  • Aihara, H
  • Arinstein, K
  • Bakich, AM
  • Belous, K
  • Bhardwaj, V
  • Bischofberger, M
  • Bozek, A
  • Bračko, M
  • Browder, TE
  • Chao, Y
  • Chen, A
  • Cheon, BG
  • Chistov, R
  • Cho, I-S
  • Choi, Y
  • Dalseno, J
  • Das, A
  • Dash, M
  • Dungel, W
  • Eidelman, S
  • Gabyshev, N
  • Goldenzweig, P
  • Golob, B
  • Ha, H
  • Haba, J
  • Hayashii, H
  • Horii, Y
  • Hoshi, Y
  • Hou, W-S
  • Hsiung, YB
  • Hyun, HJ
  • Iijima, T
  • Inami, K
  • Ishikawa, A
  • Itoh, R
  • Iwasaki, M
  • Kah, DH
  • Kang, JH
  • Katayama, N
  • Kawai, H
  • Kawasaki, T
  • Kim, HO
  • Kim, JH
  • Kim, SK
  • Kim, YI
  • Kim, YJ
  • Kinoshita, K
  • Ko, BR
  • Kreps, M
  • Križan, P
  • Krokovny, P
  • Kuhr, T
  • Kuzmin, A
  • Kwon, Y-J
  • Kyeong, S-H
  • Lee, MJ
  • Lee, SE
  • Lee, S-H
  • Lesiak, T
  • Li, J
  • Limosani, A
  • Liu, C
  • Liventsev, D
  • Louvot, R
  • Mandl, F
  • Matyja, A
  • McOnie, S
  • Miyata, H
  • Miyazaki, Y
  • Mizuk, R
  • Mori, T
  • Nagasaka, Y
  • Nakano, E
  • Nakao, M
  • Natkaniec, Z
  • Nishida, S
  • Nishimura, K
  • Nitoh, O
  • Nozaki, T
  • Ogawa, S
  • Ohshima, T
  • Okuno, S
  • Ostrowicz, W
  • Ozaki, H
  • Pakhlova, G
  • Park, CW
  • Park, HK
  • Park, KS
  • Pestotnik, R
  • Piilonen, LE
  • Sahoo, H
  • Sakai, Y
  • Schneider, O
  • Schwanda, C
  • Seidl, R
  • Senyo, K
  • Sevior, ME
  • Shapkin, M
  • Shiu, J-G
  • Shwartz, B
  • Singh, JB
  • Stanič, S
  • Starič, M
  • Sumisawa, K
  • Taylor, GN
  • Teramoto, Y
  • Trabelsi, K
  • Uehara, S
  • Uglov, T
  • Unno, Y
  • Uno, S
  • Varner, G
  • Varvell, KE
  • Vervink, K
  • Wang, CH
  • Wang, M-Z
  • Wang, P
  • Watanabe, Y
  • Wedd, R
  • Won, E
  • Yabsley, BD
  • Yamashita, Y
  • Zhang, ZP
  • Zhilich, V
  • Zhulanov, V
  • Zivko, T
  • Zupanc, A
  • Zyukova, O

publication date

  • January 13, 2010