Measurement of CP violation in B 0 → D ∗± D decays

The LHCb Collaboration

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Abstract

The decay-time-dependent CP asymmetry in B0→ D∗±D decays is mea- sured using a data set corresponding to an integrated luminosity of 9 fb−1 recorded by the LHCb detector in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The CP parameters are measured asSD∗D=−0.861±0.077(stat)±0.019(syst),ΔSD∗D=0.019±0.075(stat)±0.012(syst),CD∗D=−0.059±0.092(stat)±0.020(syst),ΔCD∗D=−0.031±0.092(stat)±0.016(syst),AD∗D=0.008±0.014(stat)±0.006(syst). The analysis provides the most precise single measurement of CP violation in this decay channel to date. All parameters are consistent with their current world average values. [Figure not available: see fulltext.]

Original languageEnglish
Article number147
Number of pages28
JournalJournal of High Energy Physics
Volume2020
Issue number3
DOIs
Publication statusPublished - 25 Mar 2020
Externally publishedYes

Keywords

  • B physics
  • CP violation
  • Electroweak interaction
  • Flavor physics
  • Hadron- Hadron scattering (experiments)

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