TY - JOUR AU - LHCb Collaboration (Aaij, R. et al AU - Martinez-Vidal, F. AU - Oyanguren, A. AU - Ruiz Valls, P. AU - Sanchez Mayordomo, C. PY - 2015 DA - 2015// TI - Study of B- -> DK-pi(+)pi(-) and B- -> D pi(-)pi(+)pi(-) decays and determination of the CKM angle gamma T2 - Phys. Rev. D JO - Physical Review D SP - 112005 EP - 20pp VL - 92 IS - 11 PB - Amer Physical Soc AB - We report a study of the suppressed B- -> DK-pi(+)pi(-) and favored B- -> D pi(-)pi(+)pi(-) decays, where the neutral D meson is detected through its decays to the K--/+pi(+/-) and CP -even K+K- and pi(+)pi(-) final states. The measurement is carried out using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 3.0 fb(-1). We observe the first significant signals in the CP – even final states of the D meson for both the suppressed B- -> DK-pi(+)pi(-) and favored B- -> D pi(-)pi(+)pi(-) modes, as well as in the doubly Cabibbo suppressed D -> K+pi(-) final state of the B- -> D pi(-)pi(+)pi(-) decay. Evidence for the suppressed decay B- -> DK-pi(+)pi(-), with D -> K+pi(-), is also presented. From the observed yields in the B- -> DK-pi(+)pi(-), B- -> D pi(-)pi(+)pi(-) and their charge conjugate decay modes, the most probable value of the weak phase gamma corresponds to gamma = (74(-19)(+20))degrees. This is one of the most precise single-measurement determinations of gamma to date. SN - 1550-7998 UR - http://arxiv.org/abs/1505.07044 UR - https://doi.org/10.1103/PhysRevD.92.112005 DO - 10.1103/PhysRevD.92.112005 LA - English N1 - WOS:000366733500001 ID - LHCbCollaborationAaij_etal2015 ER -