TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Henry, L.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
PY  - 2021
DA  - 2021//
TI  - Search for time-dependent CP violation in D-0 -> K+K- and D-0 -> pi(+)pi(-) decays
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 072010
EP  - 23pp
VL  - 104
IS  - 7
PB  - Amer Physical Soc
AB  - A search for time-dependent violation of the charge-parity symmetry in D-0 -> K+K- and D-0 -> pi(+)pi(-) decays is performed at the LHCb experiment using proton-proton collision data recorded from 2015 to 2018 at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb(-1). The D-0 meson is required to originate from a D*(2010)(+) -> D-0 pi(+) decay, such that its flavor at production is identified by the charge of the accompanying pion. The slope of the time-dependent asymmetry of the decay rates of D-0 and (D) over bar (0) mesons into the final states under consideration is measured to be Delta YK+K- = (-2.3 +/- 1.5 +/- 0.3) x 10(-40), Delta Y pi(+)pi(-) = (-4.0 +/- 2.8 +/- 0.4) x 10(-4), where the first uncertainties are statistical and the second are systematic. These results are compatible with the conservation of the charge-parity symmetry at the level of 2 standard deviations and improve the precision by nearly a factor of 2.
SN  - 2470-0010
UR  - https://arxiv.org/abs/2105.09889
UR  - https://doi.org/10.1103/PhysRevD.104.072010
DO  - 10.1103/PhysRevD.104.072010
LA  - English
N1  - WOS:000753732900001
ID  - LHCbCollaborationAaij_etal2021
ER  -