Measurement of the CKM angle γ from a combination of LHCb results

The LHCb Collaboration

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A combination of measurements sensitive to the CKM angle γ from LHCb is performed. The inputs are from analyses of time-integrated B+ → DK+, B0 → DK∗0, B0 → DK+π− and B+ → DK+π+π− tree-level decays. In addition, results from a time-dependent analysis of Bs 0 → Ds ∓K± decays are included. The combination yields γ = (72. 2− 7.3 + 6.8)°, where the uncertainty includes systematic effects. The 95.5% confidence level interval is determined to be γ ∈ [55.9, 85.2]°. A second combination is investigated, also including measurements from B+ → Dπ+ and B+ → Dπ+π−π+ decays, which yields compatible results.
Original languageEnglish
Article number87
Number of pages59
JournalJournal of High Energy Physics
Issue number12
Publication statusPublished - 2016
Externally publishedYes


  • B physics
  • CKM angle gamma
  • CP violation
  • Hadron-Hadron scattering (experiments)

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