Measurement of the form factors of the decay B-0 -> D*(-) l(+) v(l) and determination of the CKM matrix element vertical bar V-cb vertical bar

  • Dungel, W.
  • Schwanda, C.
  • Adachi, I.
  • Aihara, H.
  • Aushev, T.
  • ... Cheon, B. G.
  • 외 122명
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85

초록

This article describes a determination of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar from the decay B-0 -> D*(-) l(+) v(l) using 711 fb(-1) of Belle data collected near the Y(4S) resonance. We simultaneously measure the product of the form factor normalization F(1) and the matrix element vertical bar V-cb vertical bar as well as the three parameters rho(2), R-1(1) and R-2(1), which determine the form factors of this decay in the framework of the heavy quark effective theory. The results, based on about 120 000 reconstructed B-0 -> D*(-) l(+) v(l) decays, are rho(2) = 1.214 +/- 0.034 +/- 0.009, R-1(1) = 1.401 +/- 0.034 +/- 0.018, R-2(1) = 0.864 +/- 0.024 +/- 0.008 and F(1)vertical bar V-cb vertical bar = (34.6 +/- 0.2 +/- 1.0) x 10(-3). The branching fraction of B-0 -> D*(-) l(+) v(l) is measured at the same time; we obtain a value of B-0 -> D*(-) l(+) v(l) = (4.58 +/- 0.03 +/- 0.26)%. The errors correspond to the statistical and systematic uncertainties. These results give the most precise determination of the form factor parameters and F(1)vertical bar V-cb vertical bar to date. In addition, a direct, model-independent determination of the form factor shapes has been carried out.

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MONTE-CARLOIDENTIFICATION
제목
Measurement of the form factors of the decay B-0 -> D*(-) l(+) v(l) and determination of the CKM matrix element vertical bar V-cb vertical bar
저자
Dungel, W.Schwanda, C.Adachi, I.Aihara, H.Aushev, T.Aziz, T.Bakich, A. M.Balagura, V.Barberio, E.Bischofberger, M.Bozek, A.Bracko, M.Browder, T. E.Chang, P.Chao, Y.Chen, A.Chen, P.Cheon, B. G.Chistov, R.Cho, I. -S.Cho, K.Choi, K. -S.Choi, Y.Dalseno, J.Drutskoy, A.Eidelman, S.Ha, H.Haba, J.Hayashii, H.Horii, Y.Hoshi, Y.Hou, W. -S.Iijima, T.Inami, K.Iwabuchi, M.Iwasaki, Y.Joshi, N. J.Julius, T.Kang, J. H.Kawasaki, T.Kim, H. J.Kim, H. O.Kim, J. H.Kim, M. J.Kim, Y. J.Kinoshita, K.Ko, B. R.Krizan, P.Krokovny, P.Kuhr, T.Kumita, T.Kuzmin, A.Kwon, Y. -J.Kyeong, S. -H.Lee, M. J.Lee, S. -H.Li, J.Limosani, A.Liu, C.Liu, Y.Liventsev, D.Louvot, R.Matyja, A.McOnie, S.Miyata, H.Mizuk, R.Mohanty, G. B.Mori, T.Nakano, E.Nakao, M.Natkaniec, Z.Neubauer, S.Nishida, S.Nitoh, O.Nozaki, T.Ohshima, T.Okuno, S.Olsen, S. L.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Petric, M.Piilonen, L. E.Prim, M.Roehrken, M.Rozanska, M.Ryu, S.Sahoo, H.Sakai, K.Sakai, Y.Schneider, O.Schwartz, A. J.Senyo, K.Sevior, M. E.Shiu, J. -G.Singh, J. B.Smerkol, P.Sokolov, A.Stanic, S.Staric, M.Sumiyoshi, T.Suzuki, S.Tanaka, S.Taylor, G. N.Teramoto, Y.Trabelsi, K.Uehara, S.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Varner, G.Varvell, K. E.Vervink, K.Wang, C. H.Wang, P.Watanabe, M.Watanabe, Y.Wedd, R.Williams, K. M.Won, E.Yamashita, Y.Zander, D.Zhang, Z. P.Zhou, P.Zhulanov, V.Zivko, T.
DOI
10.1103/PhysRevD.82.112007
발행일
2010-12
유형
Article
저널명
Physical Review D - Particles, Fields, Gravitation and Cosmology
82
11
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1 ~ 16