TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Garcia Martin, L. M.
AU  - Henry, L.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Valls, P.
AU  - Ruiz Vidal, J.
AU  - Sanchez Mayordomo, C.
PY  - 2018
DA  - 2018//
TI  - Updated determination of D-0-(D)over-bar(0) mixing and CP violation parameters with D-0 -> K+ pi(-) decays
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 031101
EP  - 11pp
VL  - 97
IS  - 3
PB  - Amer Physical Soc
AB  - We report measurements of charm-mixing parameters based on the decay-time-dependent ratio of D-0 -> K+pi(-) to D-0 -> K-pi(+) rates. The analysis uses a data sample of proton-proton collisions corresponding to an integrated luminosity of 5.0 fb(-1) recorded by the LHCb experiment from 2011 through 2016. Assuming charge-parity (CP) symmetry, the mixing parameters are determined to be x'(2) = (3.9 +/- 2.7) x 10(-5), y' = (5.28 +/- 0.52) x 10(-3), and R-D = (3.454 +/- 0.031) x 10(-3). Without this assumption, the measurement is performed separately for D-0 and (D) over bar (0) mesons, yielding a direct CP-violating asymmetry A(D) = (-0.1 +/- 9.1) x 10(-3), and magnitude of the ratio of mixing parameters 1.00 < vertical bar q/p vertical bar < 1.35 at the 68.3% confidence level. All results include statistical and systematic uncertainties and improve significantly upon previous single-measurement determinations. No evidence for CP violation in charm mixing is observed.
SN  - 2470-0010
UR  - http://arxiv.org/abs/1712.03220
UR  - https://doi.org/10.1103/PhysRevD.97.031101
DO  - 10.1103/PhysRevD.97.031101
LA  - English
N1  - WOS:000425742600001
ID  - LHCbCollaborationAaij_etal2018
ER  -