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

The Lhcb Collaboration

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A measurement of the CP asymmetries Sf and S in B0 → Dπ± decays is reported. The decays are reconstructed in a dataset collected with the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3.0 fb−1. The CP asymmetries are measured to be Sf = 0.058 ± 0.020(stat) ± 0.011(syst) and Sf¯=0.038±0.020(stat)±0.007(syst). These results are in agreement with, and more precise than, previous determinations. They are used to constrain angles of the unitarity triangle, | sin (2β + γ) | and γ, to intervals that are consistent with the current world-average values.[Figure not available: see fulltext.].

Original languageEnglish (US)
Article number84
JournalJournal of High Energy Physics
Volume2018
Issue number6
DOIs
StatePublished - Jun 1 2018

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CP violation
asymmetry
protons
decay
triangles
center of mass
luminosity
intervals
collisions
energy

Keywords

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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Measurement of CP violation in B 0 → D π± decays. / The Lhcb Collaboration.

In: Journal of High Energy Physics, Vol. 2018, No. 6, 84, 01.06.2018.

Research output: Contribution to journalArticle

The Lhcb Collaboration. / Measurement of CP violation in B 0 → D π± decays. In: Journal of High Energy Physics. 2018 ; Vol. 2018, No. 6.
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abstract = "A measurement of the CP asymmetries Sf and Sf¯ in B0 → D∓π± decays is reported. The decays are reconstructed in a dataset collected with the LHCb experiment in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV and corresponding to an integrated luminosity of 3.0 fb−1. The CP asymmetries are measured to be Sf = 0.058 ± 0.020(stat) ± 0.011(syst) and Sf¯=0.038±0.020(stat)±0.007(syst). These results are in agreement with, and more precise than, previous determinations. They are used to constrain angles of the unitarity triangle, | sin (2β + γ) | and γ, to intervals that are consistent with the current world-average values.[Figure not available: see fulltext.].",
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