Measurement of indirect CP asymmetries in D0 → K−K+ and D0 → π−π+ decays using semileptonic B decays
- R. Aaij,
- B. Adeva,
- M. Adinolfi,
- A. Affolder,
- Z. Ajaltouni,
- S. Akar
- National Institute for Subatomic Physics,
- University of Santiago de Compostela,
- University of Bristol,
- University of Liverpool,
- Université Clermont Auvergne,
- CNRS
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Abstract
Abstract: Time-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D 0 → K −K + and D 0 → π −π + are measured in pp collision data corresponding to an integrated luminosity of 3.0 fb −1 collected by the LHCb experiment. The D 0 mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial state as D 0 or (Formula presented.). The asymmetries in effective lifetimes between D 0 and (Formula presented.) decays, which are sensitive to indirect CP violation, are determined to be
(Formula presented.)
where the first uncertainties are statistical and the second systematic. This result is in agreement with previous measurements and with the hypothesis of no indirect CP violation in D 0 decays.[Figure not available: see fulltext.]
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EnglishArticle number
43Journal (Volume, Issue Number)
Journal of High Energy Physics (Volume 2015, Issue 4)Publication milestones
- Published - 01/04/2015
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1126-6708Publication IDs
- Scopus: 84973508285