Measurement of vertical bar V-ub vertical bar from Inclusive Charmless Semileptonic B Decays

  • Urquijo, P.
  • Barberio, E.
  • Adachi, I.
  • Aihara, H.
  • Arinstein, K.
  • ... Cheon, B. G.
  • 외 125명
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초록

We present the partial branching fraction for inclusive charmless semileptonic B decays and the corresponding value of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar, using a multivariate analysis method to access similar to 90% of the B -> X(u)l nu 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 657 X 10(6) B (B) over bar pairs collected with the Belle detector. We find that Delta B(B -> X(u)l nu; p(l)*(B) > 1.0 GeV/c) = 1.963X(1 +/- 0.088(stat) +/- 0.081(syst)) X 10(-3). Corresponding values of vertical bar V-ub vertical bar are extracted using several theoretical calculations.

키워드

HEAVY-QUARK SYMMETRYMESON DECAYSCP-VIOLATION
제목
Measurement of vertical bar V-ub vertical bar from Inclusive Charmless Semileptonic B Decays
저자
Urquijo, P.Barberio, E.Adachi, I.Aihara, H.Arinstein, K.Bakich, A. M.Belous, K.Bhardwaj, V.Bischofberger, M.Bozek, A.Bracko, M.Browder, T. E.Chao, Y.Chen, A.Cheon, B. G.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, Y. B.Hyun, H. J.Iijima, T.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, M.Kah, D. H.Kang, J. H.Katayama, N.Kawai, H.Kawasaki, T.Kim, H. O.Kim, J. H.Kim, S. K.Kim, Y. I.Kim, Y. J.Kinoshita, K.Ko, B. R.Kreps, M.Krizan, P.Krokovny, P.Kuhr, T.Kuzmin, A.Kwon, Y-J.Kyeong, S-H.Lee, M. J.Lee, S. E.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, C. W.Park, H. K.Park, K. S.Pestotnik, R.Piilonen, L. E.Sahoo, H.Sakai, Y.Schneider, O.Schwanda, C.Seidl, R.Senyo, K.Sevior, M. E.Shapkin, M.Shiu, J-G.Shwartz, B.Singh, J. B.Stanic, S.Staric, M.Sumisawa, K.Taylor, G. N.Teramoto, Y.Trabelsi, K.Uehara, S.Uglov, T.Unno, Y.Uno, S.Varner, G.Varvell, K. E.Vervink, K.Wang, C. H.Wang, M-Z.Wang, P.Watanabe, Y.Wedd, R.Won, E.Yabsley, B. D.Yamashita, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zivko, T.Zupanc, A.Zyukova, O.
DOI
10.1103/PhysRevLett.104.021801
발행일
2010-01
유형
Article
저널명
Physical Review Letters
104
2
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