Liventsev, D.Matsumoto, T.Abe, K.Aihara, H.Asano, Y.Aushev, T.Bakich, A.M.Balagura, V.Barbero, M.Bedny, I.Bitenc, U.Bizjak, I.Blyth, S.Bondar, A.Bračko, M.Browder, T.E.Chao, Y.Chen, A.Chen, W.T.Cheon, B.G.Chistov, R.Choi, Y.Chuvikov, A.Cole, S.Dalseno, J.Dash, M.Dong, L.Y.Eidelman, S.Enari, Y.Fratina, S.Gabyshev, N.Gershon, T.Go, A.Gokhroo, G.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hazumi, M.Hinz, L.Hokuue, T.Hoshi, Y.Hou, S.Hou, W.-S.Iijima, T.Ikado, K.Imoto, A.Ishikawa, A.Itoh, R.Iwasaki, M.Kang, J.H.Kang, J.S.Kataoka, S.U.Kawasaki, T.Khan, H.R.Kichimi, H.Kim, S.M.Kinoshita, K.Križan, P.Krokovny, P.Kuo, C.C.Kuzmin, A.Kwon, Y.-J.Lesiak, T.Lin, S.-W.Mandl, F.Matyja, A.Mitaroff, W.Miyake, H.Miyata, H.Miyazaki, Y.Mizuk, R.Nakano, E.Nakao, M.Natkaniec, Z.Nishida, S.Nitoh, O.Nozaki, T.Ogawa, S.Ohshima, T.Okabe, T.Okuno, S.Olsen, S.L.Onuki, Y.Ostrowicz, W.Ozaki, H.Pakhlov, P.Palka, H.Park, C.W.Parslow, N.Pestotnik, R.Piilonen, L.E.Ronga, F.J.Rozanska, M.Sakai, Y.Sato, N.Satoyama, N.Sayeed, K.2010-11-052010-11-052010-11-05200510.1103/PhysRevD.72.0511092-s2.0-33845767063https://infoscience.epfl.ch/handle/20.500.14299/56855WOS:000232230000009We report on a measurement of the branching fractions for B- → D(*)+π- ℓ -v̄ℓ and B̄0 → D (*)0π+ℓ-v̄ℓ with 275 × 106 BB̄ events collected at the γ(4S) resonance with the Belle detector at KEKB. Events are tagged by fully reconstructing one of the B mesons in hadronic modes. We obtain B(B- → D+π- ℓ-v̄ℓ = (0.54±0.07(stat)±0.07(syst)±0.06(BR))× 10 -2, B(B- → D(*)+π- ℓ-v̄ℓ = (0.67 ±0.11(stat) ±0.09(syst) ±0.03(BR)) × 10-2, B(B̄0 → D0π+ ℓ -v̄ℓ) = (0.33 ±0.06(stat) ± 0.06(syst) ±0.03(BR)) × 10-2, B(B̄0 → D(*)0π+ℓ -v̄ℓ) = (0.65 ±0.12(stat) ± 0.08(syst) ±0.05(BR)) × 10-2, where the third error comes from the error on B̄ → D(*)ℓ -v̄ℓ decays. Contributions from B0 → D(*)+ℓ-v̄ℓ decays are excluded in the measurement of B̄0 → D0π +ℓ-v̄ℓ. © 2005 The American Physical Society.text::journal::journal article::research article