Measurement of CP observables in the process B 0 → DK *0 with two- and four-body D decays

The LHCb Collaboration, Alexander Rudolfovich Wagner

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Abstract

Measurements of CP observables in B0 → DK∗0 decays are presented, where D represents a superposition of D0 and D¯ states. The D meson is reconstructed in the two-body final states K+π, π+K, K+K and π+π, and, for the first time, in the fourbody final states K+ππ+π, π+Kπ+π and π+ππ+π. The analysis uses a sample of neutral B mesons produced in proton-proton collisions, corresponding to an integrated luminosity of 1.0, 2.0 and 1.8 fb−1 collected with the LHCb detector at centre-of-mass energies of s=7,8 and 13 TeV, respectively. First observations of the decays B0 → D(π+K)K∗0 and B0 → D(π+ππ+π)K∗0 are obtained. The measured observables are interpreted in terms of the CP -violating weak phase γ. [Figure not available: see fulltext.]

Original languageEnglish
Article number41
JournalJournal of High Energy Physics
Volume2019
Issue number8
DOIs
Publication statusPublished - 1 Aug 2019

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Keywords

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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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