Measurement of the time-integrated CP asymmetry in D0 → K0SK0S decays
Loading...
Identifiers
Publication date
Advisors
Tutors
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Metrics
Export
Abstract
A measurement of the time-integrated CP asymmetry in D0 → K0SK0S decays is reported. The data correspond to an integrated luminosity of about 2 fb−1 collected in 2015–2016 by the LHCb collaboration in pp collisions at a centre-of-mass energy of 13 TeV. The D0 candidate is required to originate from a D*+ → D0π+ decay, allowing the determination of the flavour of the D0 meson using the pion charge. The D0 → K+K− decay, which has a well measured CP asymmetry, is used as a calibration channel. The CP asymmetryfor D0 → K 0SK 0S is measured to be
ACP(D0→K0SK0S)=(4.3±3.4±1.0)%,
where the first uncertainty is statistical and the second is systematic. This result is combined with the previous LHCb measurement at lower centre-of-mass energies to obtain
ACP(D0→K0SK0S)=(2.3±2.8±0.9)%.
Description
Bibliographic citation
Aaij, R., Adeva, B., Adinolfi, M. et al. Measurement of the time-integrated CP asymmetry in D0 → K0SK0S decays. J. High Energ. Phys. 2018, 48 (2018). https://doi.org/10.1007/JHEP11(2018)048
Relation
Has part
Has version
Is based on
Is part of
Is referenced by
Is version of
Requires
Publisher version
https://doi.org/10.1007/JHEP11(2018)048Sponsors
Rights
© CERN, for the bene t of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.