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Measurement of CP asymmetry in D0 → KS0KS0 decays with Run 3 data

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  • Additional Information
    • Publication Information:
      Springer
    • Publication Date:
      2026
    • Collection:
      University of Glasgow: Enlighten - Publications
    • Abstract:
      A measurement of CP asymmetry in D0→KS0KS0 decays is reported, based on a data sample of proton-proton collisions collected with the LHCb detector in 2024 at a centre-of-mass energy of 13.6 TeV, corresponding to an integrated luminosity of 6.2 fb−1. The D0→KS0π+π− decay is used as calibration channel to cancel residual detection and production asymmetries. The time-integrated CP asymmetry for the D0→KS0KS0 mode is measured to be ACPD0→KS0KS0=1.86±1.04±0.41%, where the first uncertainty is statistical, and the second is systematic. This measurement represents the most precise single-experiment determination of this quantity to date.
    • File Description:
      text
    • Relation:
      https://eprints.gla.ac.uk/381369/1/381369.pdf; Aaij, R. et al. (2026) Measurement of CP asymmetry in D0 → KS0KS0 decays with Run 3 data. Journal of High Energy Physics , 2026(2), 253. (doi:10.1007/JHEP02(2026)253 )
    • Accession Number:
      10.1007/JHEP02(2026)253
    • Online Access:
      https://eprints.gla.ac.uk/381369/
      https://eprints.gla.ac.uk/381369/1/381369.pdf
      https://doi.org/10.1007/JHEP02(2026)253
    • Rights:
      cc_by_4
    • Accession Number:
      edsbas.ECA464AB