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Measurement of the decay B -> Dl nu(l) in fully reconstructed events and determination of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar

Authors
Glattauer, R.Schwanda, C.Abdesselam, A.Adachi, I.Adamczyk, K.Aihara, H.Al Said, S.Asner, D. M.Aushev, T.Ayad, R.Aziz, T.Badhrees, I.Bakich, A. M.Bansal, V.Barberio, E.Bhuyan, B.Biswal, J.Bonvicini, G.Bozek, A.Bracko, M.Breibeck, F.Browder, T. E.Cervenkov, D.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Chistov, R.Cho, K.Chobanova, V.Choi, Y.Cinabro, D.Dalseno, J.Danilov, M.Dash, N.Dingfelder, J.Dolezal, Z.Drutskoy, A.Dutta, D.Eidelman, S.Farhat, H.Fast, J. E.Ferber, T.Frey, A.Fulsom, B. G.Gaur, V.Gabyshev, N.Garmash, A.Gillard, R.Goh, Y. M.Goldenzweig, P.Golob, B.Greenwald, D.Haba, J.Hamer, P.Hara, T.Hasenbusch, J.Hayasaka, K.Hayashii, H.Hou, W. -S.Hsu, C. -L.Iijima, T.Inami, K.Inguglia, G.Ishikawa, A.Jeon, H. B.Joffe, D.Joo, K. K.Julius, T.Kang, K. H.Kato, E.Kawasaki, T.Kiesling, C.Kim, D. Y.Kim, J. B.Kim, J. H.Kim, K. T.Kim, M. J.Kim, S. H.Kim, Y. J.Kinoshita, K.Kodys, P.Korpar, S.Krizan, P.Krokovny, P.Kuhr, T.Kuzmin, A.Kwon, Y. -J.Lee, I. S.Li, L.Li, Y.Libby, J.Liu, Y.Liventsev, D.Lukin, P.MacNaughton, J.Masuda, M.Matvienko, D.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Mohanty, S.Moll, A.Moon, H. K.Mussa, R.Nakano, E.Nakao, M.Nanut, T.Natkaniec, Z.Nayak, M.Nisar, N. K.Nishida, S.Ogawa, S.Okuno, S.Oswald, C.Pakhlov, P.Pakhlova, G.Pal, B.Park, H.Pedlar, T. K.Pesntez, L.Pestotnik, R.Petric, M.Piilonen, L. E.Pulvermacher, C.Rauch, J.Ribezl, E.Ritter, M.Rostomyan, A.Sahoo, H.Sakai, Y.Sandilya, S.Santelj, L.Sanuki, T.Savinov, V.Schneider, O.Schnell, G.Schwartz, A. J.Seino, Y.Senyo, K.Seon, O.Sevior, M. E.Shebalin, V.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Sibidanov, A.Simon, F.Sohn, Y. -S.Sokolov, A.Solovieva, E.Staric, M.Sumiyoshi, T.Tamponi, U.Teramoto, Y.Trabelsi, K.Trusov, V.Uchida, M.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Van Hulse, C.Vanhoefer, P.Varner, G.Varvell, K. E.Vorobyev, V.Vossen, A.Wang, C. H.Wang, M. -Z.Wang, P.Watanabe, Y.Won, E.Yamamoto, H.Yamashita, Y.Yook, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zupanc, A.
Issue Date
25-2월-2016
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.93, no.3
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
93
Number
3
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/89470
DOI
10.1103/PhysRevD.93.032006
ISSN
2470-0010
Abstract
We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar using the decay B -> Dl nu(l) (l = e,mu) based on 711 fb(-1) of e(+)e(-) -> Upsilon(4S) data recorded by the Belle detector and containing 772 x 10(6) B (B) over bar pairs. One B meson in the event is fully reconstructed in a hadronic decay mode, while the other, on the signal side, is partially reconstructed from a charged lepton and either a D+ or D-0 meson in a total of 23 hadronic decay modes. The isospin-averaged branching fraction of the decay B -> Dl nu(l) is found to be B(B-0 -> D(-)l(vertical bar)nu(l)) = (2.31 +/- 0.03(stat) +/- 0.11(syst))%. Analyzing the differential decay rate as a function of the hadronic recoil with the parametrization of Caprini, Lellouch, and Neubert and using the form-factor prediction G(1) = 1.0541 +/- 0.0083 calculated by FNAL/MILC, we obtain eta(EW)vertical bar V-cb vertical bar = (40.12 +/- 1.34) x 10(-3), where eta(EW) is the electroweak correction factor. Alternatively, assuming the model-independent form-factor parametrization of Boyd, Grinstein, and Lebed and using lattice QCD data from the FNAL/MILC and HPQCD collaborations, we find eta(EW)vertical bar V-cb vertical bar = (41.10 +/- 1.14) x 10(-3).
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