Measurement of the time-integrated CP asymmetry in D<sup>0</sup> → K<inf>S</inf><sup>0</sup>K<inf>S</inf><sup>0</sup>decays
- The LHCb collaboration,
- R. Aaij,
- B. Adeva,
- M. Adinolfi,
- A. Affolder,
- Z. Ajaltouni
- CERN,
- University of Santiago de Compostela,
- University of Bristol,
- University of Liverpool,
- Université Clermont Auvergne,
- CNRS
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Abstract
Abstract: The time-integrated CP asymmetry in the decay D 0→ K S 0K S 0is measured using 3 fb −1of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The flavour of the D 0meson is determined by use of the decay D *+→ D 0π +and its charge conjugate mode. The result is A CP=−0.029±0.052±0.022, where the first uncertainty is statistical and the second systematic. The result is consistent with Standard Model expectations and improves the uncertainty with respect to the only previous measurement of this quantity by more than a factor of three.
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EnglishArticle number
55Journal (Volume, Issue Number)
Journal of High Energy Physics (Volume 2015, Issue 10)Publication milestones
- Published - 01/10/2015
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ISSN
1126-6708Publication IDs
- Scopus: 84944046452