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  - Measurement of the Semileptonic CP Asymmetry in B-0-(B)over-bar(0) Mixing
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 041601
EP  - 9pp
VL  - 114
IS  - 4
PB  - Amer Physical Soc
AB  - 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.
SN  - 0031-9007
UR  - http://arxiv.org/abs/1409.8586
UR  - https://doi.org/10.1103/PhysRevLett.114.041601
DO  - 10.1103/PhysRevLett.114.041601
LA  - English
N1  - WOS:000349871400002
ID  - LHCbCollaborationAaij_etal2015
ER  -