%0 Journal Article
%T Measurement of the Semileptonic CP Asymmetry in B-0-(B)over-bar(0) Mixing
%A LHCb Collaboration (Aaij, R. et al
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Ruiz Valls, P.
%A Sanchez Mayordomo, C.
%J Physical Review Letters
%D 2015
%V 114
%N 4
%I Amer Physical Soc
%@ 0031-9007
%G English
%F LHCbCollaborationAaij_etal2015
%O WOS:000349871400002
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2141), last updated on Thu, 26 Mar 2015 10:32:06 +0000
%X The semileptonic CP asymmetry in B-0-(B) over bar (0) mixing, a(s1)(d), is measured in proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb(-1), recorded by the LHCb experiment. Semileptonic B-0 decays are reconstructed in the inclusive final states D-mu(+) and D*(-)mu(+), where the D- meson decays into the K+pi(-)pi(-) final state and the D*(-) meson into the (D) over bar (0)(-> K+pi(-))pi(-) final state. The asymmetry between the numbers of D-(*()-)mu(+) and D-(*()+)mu(-) decays is measured as a function of the decay time of the B-0 mesons. The CP asymmetry is measured to be a(s1)(d) = (-0.02 +/- 0.19 +/- 0.30)%, where the first uncertainty is statistical and the second systematic. This is the most precise measurement of a(s1)(d) to date and is consistent with the prediction from the standard model.
%R 10.1103/PhysRevLett.114.041601
%U http://arxiv.org/abs/1409.8586
%U https://doi.org/10.1103/PhysRevLett.114.041601
%P 041601-9pp