TY - JOUR
T1 - A model-independent Dalitz plot analysis of B-+/- -> DK +/- with D -> K(S)(0)h(+)h(-) (h = pi, K) decays and constraints on the CKM angle gamma
AU - Aaij, R.
AU - Beteta, C.A.
AU - Adametz, A.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Adrover, C.
AU - Affolder, A.
AU - Ajaltouni, Z.
AU - Albrecht, J.
AU - Alessio, F.
AU - Alexander, M.
AU - Ali, S.
AU - Alkhazov, G.
AU - Cartelle, P.A.
AU - Alves, A.
AU - Amato, S.
AU - Amhis, Y.
AU - Anderlini, L.
AU - Anderson, J.
AU - Appleby, R.B.
AU - Gutierrez, O.A.
AU - Archilli, F.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Auriemma, G.
AU - Bachmann, S.
AU - Back, J.J.
AU - Baesso, C.
AU - Baldini, W.
AU - Barlow, R.J.
AU - Barschel, C.
AU - Barsuk, S.
AU - Barter, W.
AU - Bates, A.
AU - Bauer, T.
AU - Bay, A.
AU - Beddow, J.
AU - Bediaga, I.
AU - Belogurov, S.
AU - Belous, K.
AU - Belyaev, I.
AU - Ben-Haim, E.
AU - Benayoun, M.
AU - Bencivenni, G.
AU - Benson, S.
AU - Benton, J.
AU - Berezhnoy, A.
AU - Bernet, R.
AU - van den Brand, J.
AU - LHCb collaboration
AU - Wilkinson, Guy R.
PY - 2012/11/15
Y1 - 2012/11/15
N2 - A binned Dalitz plot analysis of B-+/- -> DK +/- decays, with D -> K-0(S)pi(+)pi(-) and D -> (KSK+K-)-K-0 is performed to measure the CP-violating observables x(+/-) and y(+/-) which are sensitive to the CKM angle y. The analysis exploits 1.0 fb(-1) of data collected by the LHCb experiment. The study makes no model-based assumption on the variation of the strong phase of the D decay amplitude over the Dalitz plot, but uses measurements of this quantity from CLEO-c as input. The values of the parameters are found to be x_ = (0.0 +/- 4.3 1.5 +/- 0.6) x 10(-2), y_ = (2.7 +/- 5.2 +/- 0.8 +/- 2.3) x 10-2, x(+) =(-10.3 +/- 4.5 +/- 1.8 +/- 1.4) x 10-2 and y(+) = (-0.9 +/- 3.7 0.8 +/- 3.0) x 10-2. The first, second, and third uncertainties are the statistical, the experimental systematic, and the error associated with the precision of the strong-phase parameters measured at CLEO-c, respectively. These results correspond to gamma = (44(-38)(+43))degrees, with a second solution at gamma -> gamma + 180 degrees and r(B) = 0.07 +/- 0.04, where r(B) is the ratio between the suppressed and favoured B decay amplitudes. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
AB - A binned Dalitz plot analysis of B-+/- -> DK +/- decays, with D -> K-0(S)pi(+)pi(-) and D -> (KSK+K-)-K-0 is performed to measure the CP-violating observables x(+/-) and y(+/-) which are sensitive to the CKM angle y. The analysis exploits 1.0 fb(-1) of data collected by the LHCb experiment. The study makes no model-based assumption on the variation of the strong phase of the D decay amplitude over the Dalitz plot, but uses measurements of this quantity from CLEO-c as input. The values of the parameters are found to be x_ = (0.0 +/- 4.3 1.5 +/- 0.6) x 10(-2), y_ = (2.7 +/- 5.2 +/- 0.8 +/- 2.3) x 10-2, x(+) =(-10.3 +/- 4.5 +/- 1.8 +/- 1.4) x 10-2 and y(+) = (-0.9 +/- 3.7 0.8 +/- 3.0) x 10-2. The first, second, and third uncertainties are the statistical, the experimental systematic, and the error associated with the precision of the strong-phase parameters measured at CLEO-c, respectively. These results correspond to gamma = (44(-38)(+43))degrees, with a second solution at gamma -> gamma + 180 degrees and r(B) = 0.07 +/- 0.04, where r(B) is the ratio between the suppressed and favoured B decay amplitudes. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
U2 - 10.1016/j.physletb.2012.10.020
DO - 10.1016/j.physletb.2012.10.020
M3 - Article
SN - 0370-2693
VL - 718
SP - 43
EP - 55
JO - Physics Letters B
JF - Physics Letters B
IS - 1
ER -