TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Garcia Martin, L. M.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2016
DA  - 2016//
TI  - Measurement of CP Violation in B-0 -> D+D- Decays
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 261801 - 10pp
VL  - 117
IS  - 26
PB  - Amer Physical Soc
AB  - The CP violation observables S and C in the decay channel B-0 -> D+D- are determined from a sample of proton-proton collisions at center-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 3 fb(-1). The observable S describes CP violation in the interference between mixing and the decay amplitude, and C parametrizes direct CP violation in the decay. The following values are obtained from a flavor-tagged, decay-time-dependent analysis: S = -0.54(-0.16)(+0.17) (stat) +/- 0.05(syst) ,C=0.26(-0.17)(+0.18) (stat) +/- 0.02(syst). These values provide evidence for CP violation at a significance level of 4.0 standard deviations. The phase shift due to higher-order standard model corrections is constrained to a small value of Delta phi = -0.16(-0.21)(+0.19) rad.
SN  - 0031-9007
UR  - http://arxiv.org/abs/1608.06620
UR  - https://doi.org/10.1103/PhysRevLett.117.261801
DO  - 10.1103/PhysRevLett.117.261801
LA  - English
N1  - WOS:000390301400002
ID  - LHCbCollaborationAaij_etal2016
ER  -