%0 Journal Article
%T Observation of B-c(+) -> (DK+)-K-0 Decays
%A LHCb Collaboration (Aaij, R. et al
%A Garcia Martin, L. M.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Valls, P.
%A Sanchez Mayordomo, C.
%J Physical Review Letters
%D 2017
%V 118
%N 11
%I Amer Physical Soc
%@ 0031-9007
%G English
%F LHCbCollaborationAaij_etal2017
%O WOS:000396267100005
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2963), last updated on Thu, 23 Mar 2017 12:17:13 +0000
%X Using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb(-1), recorded by the LHCb detector at center-of-mass energies of 7 and 8 TeV, the B-c(+) -> (DK+)-K-0 decay is observed with a statistical significance of 5.1 standard deviations. By normalizing to B-c(+) -> (D) over bar (0)pi(+) decays, a measurement of the branching fraction multiplied by the production rates for B-c(+) relative to B+ mesons in the LHCb acceptance is obtained, R-D0K = (f(c)/f(u)) x B(B-c(+) -> (DK+)-K-0) = (9.3(-2.5)(+2.8) +/- 0.6) x 10(-7), where the first uncertainty is statistical and the second is systematic. This decay is expected to proceed predominantly through weak annihilation and penguin amplitudes, and is the first B-c(+) decay of this nature to be observed.
%R 10.1103/PhysRevLett.118.111803
%U http://arxiv.org/abs/1701.01856
%U https://doi.org/10.1103/PhysRevLett.118.111803
%P 111803-9pp