@Article{LHCbCollaborationAaij_etal2017,
author="LHCb Collaboration (Aaij, R. et al
and Garcia Martin, L. M.
and Martinez-Vidal, F.
and Oyanguren, A.
and Remon Alepuz, C.
and Ruiz Valls, P.
and Sanchez Mayordomo, C.",
title="Measurement of CP asymmetry in D-0 -> K- K+ decays",
journal="Physics Letters B",
year="2017",
publisher="Elsevier Science Bv",
volume="767",
pages="177--187",
abstract="A measurement of the time-integrated CP asymmetry in the Cabibbo-suppressed decay D-0 -> K- K+ is performed using pp collision data, corresponding to an integrated luminosity of 3 fb(-1), collected with the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The flavour of the charm meson at production is determined from the charge of the pion in D*(+) -> D-0 pi(+) and D*(-) -> (D) over bar (0)pi(-) decays. The time-integrated CP asymmetry A(CP)(K- K+) is obtained assuming negligible CP violation in charm mixing and in Cabibbo-favoured D-0 -> K- pi(+), D+ -> K- pi(+) pi(+) and D+ -> (K) over bar (0)pi(+) decays used as calibration channels. It is found to be A(CP)(K- K+) = (0.14 +/- 0.15 (stat) +/- 0.10 (syst)){\%}. A combination of this result with previous LHCb measurements yields A(CP)(K- K+) = (0.04 +/- 0.12 (stat) +/- 0.10 (syst)){\%}, A(CP)(pi(-) pi(+)) = (0.07 +/- 0.14 (stat) +/- 0.11 (syst)){\%}. These are the most precise measurements from a single experiment. The result for ACP(K- K+) is the most precise determination of a time-integrated CPasymmetry in the charm sector to date, and neither measurement shows evidence of CP asymmetry.",
optnote="WOS:000397861700027",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3023), last updated on Fri, 14 Apr 2017 23:27:24 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2017.01.061",
opturl="http://arxiv.org/abs/1610.09476",
opturl="https://doi.org/10.1016/j.physletb.2017.01.061",
archivePrefix="arXiv",
eprint="1610.09476",
language="English"
}