Measurement of the branching fraction of B →d (∗)πν at Belle using hadronic tagging in fully reconstructed events

Date Issued
01-07-2018
Author(s)
Vossen, A.
Adachi, I.
Adamczyk, K.
Aihara, H.
Al Said, S.
Asner, D. M.
Aulchenko, V.
Aushev, T.
Ayad, R.
Badhrees, I.
Bansal, V.
Beleño, C.
Bhuyan, B.
Bilka, T.
Biswal, J.
Bondar, A.
Bozek, A.
Browder, T. E.
ÄŒervenkov, D.
Chen, A.
Cheon, B. G.
Chilikin, K.
Cho, K.
Choi, S. K.
Choi, Y.
Choudhury, S.
Cinabro, D.
Cunliffe, S.
Dash, N.
Di Carlo, S.
DoleŽal, Z.
Eidelman, S.
Fast, J. E.
Ferber, T.
Fulsom, B. G.
Garg, R.
Gaur, V.
Gabyshev, N.
Garmash, A.
Gelb, M.
Goldenzweig, P.
Guido, E.
Hara, T.
Hartbrich, O.
Hayasaka, K.
Hayashii, H.
Hedges, M. T.
Hirose, S.
Hou, W. S.
Inami, K.
Ishikawa, A.
Itoh, R.
Iwasaki, M.
Iwasaki, Y.
Jacobs, W. W.
Jaegle, I.
Jia, S.
Jin, Y.
Julius, T.
Kim, D. Y.
Kim, H. J.
Kim, J. B.
Kim, K. T.
Kim, S. H.
Kinoshita, K.
Korpar, S.
Kotchetkov, D.
KriŽan, P.
Kroeger, R.
Krokovny, P.
Kuhr, T.
Kulasiri, R.
Kumita, T.
Kwon, Y. J.
Lange, J. S.
Lee, I. S.
Lee, S. C.
Li, L. K.
Li, Y.
Li Gioi, L.
Indian Institute of Technology, Madras
Liventsev, D.
Lubej, M.
Masuda, M.
Merola, M.
Miyabayashi, K.
Miyata, H.
Mizuk, R.
Moon, H. K.
Mussa, R.
Nakano, E.
Nakao, M.
Nanut, T.
Nath, K. J.
Nayak, M.
Niiyama, M.
Nishida, S.
Ono, H.
Pakhlov, P.
Pakhlova, G.
DOI
Abstract
We report a measurement of the branching fractions of the decays B→D(∗)πν. The analysis uses 772×106 BB. pairs produced in e+e-→(4S) data recorded by the Belle experiment at the KEKB asymmetric-energy e+e- collider. The tagging B meson in the decay is fully reconstructed in a hadronic decay mode. On the signal side, we reconstruct the decay B→D(∗)πν(=e,μ). The measured branching fractions are B(B+→D-π++ν)=[4.55±0.27 (stat.)±0.39 (syst.)]×10-3, B(B0→D.0π-+ν)=[4.05±0.36 (stat.)±0.41 (syst.)]×10-3, B(B+→D∗-π++ν)=[6.03±0.43 (stat.)±0.38 (syst.)]×10-3, and B(B0→D.∗0π-+ν)=[6.46±0.53 (stat.)±0.52 (syst.)]×10-3. These are in good agreement with the current world-average values.
Volume
98