Search for CP violation in D(s)+ → K K + K + decays

The LHCb collaboration

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Abstract

A search for direct CP violation in the Cabibbo-suppressed decay Ds+ → K K + K + and in the doubly Cabibbo-suppressed decay D + → K K + K + is reported. The analysis is performed with data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb −1. The search is conducted by comparing the D(s)+ and D(s)− Dalitz-plot distributions through a model-independent binned technique, based on fits to the K K + K + invariant-mass distributions, with a total of 0.97 (1.27) million Ds+ (D +) signal candidates. The results are given as p-values for the hypothesis of CP conservation and are found to be 13.3% for the Ds+ → K K + K + decay and 31.6% for the D + → K K + K + decay. No evidence for CP violation is observed in these decays. [Figure not available: see fulltext.]

Original languageEnglish
Article number67
JournalJournal of High Energy Physics
Volume2023
Issue number7
DOIs
Publication statusPublished - Jul 2023

Keywords

  • Charm Physics
  • CP Violation
  • Flavour Physics
  • Hadron-Hadron Scattering

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