2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37816Based on a data sample of an integrated luminosity of 57.4 fb-1 at the Upsilon(4S) resonance taken with the BaBar detector using the SLAC PEP-II asymmetric-energy $B$-Factory, hadronic decays of B meson with the final states D(*) and three pions are studied. The study is performed by fully reconstructing the exclusive decays of B->D(*)a_{1}(1260) and the non-resonant modes B->D(*)rho^{0} pi and B->D(*)pipipi. The current status of the study is presented and a dominant B->D(*)a_{1}(1260) decay is shown.Presentation at DPF 2003 Conference (5-8 April 2003, Philadelphia, Pennsylvania), 9 pages, 16 figures, LatexHigh Energy Physics - Experimenttext