Amplitude analysis and branching-fraction measurement of Ds+ → π + π 0 η′

The BESIII Collaboration

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Abstract

Using data collected with the BESIII detector in e+e collisions at center-of-mass energies between 4.178 and 4.226 GeV and corresponding to 6.32 fb−1 of integrated luminosity, we report the amplitude analysis and branching-fraction measurement of the Ds+→ π+π0η′ decay. We find that the dominant intermediate process is Ds+→ ρ+η′ and the significances of other resonant and nonresonant processes are all less than 3σ. The upper limits on the branching fractions of S-wave and P-wave nonresonant components are set to 0.10% and 0.74% at the 90% confidence level, respectively. In addition, the branching fraction of the Ds+→ π+π0η′ decay is measured to be (6.15 ± 0.25(stat.) ± 0.18(syst.))%, which receives significant contribution only from Ds+→ ρ+η′ according to the amplitude analysis. [Figure not available: see fulltext.].

Original languageEnglish (US)
Article number58
JournalJournal of High Energy Physics
Volume2022
Issue number4
DOIs
StatePublished - Apr 2022

Bibliographical note

Publisher Copyright:
© 2022, The Author(s).

Keywords

  • Branching fraction
  • Charm Physics
  • Particle and Resonance Production
  • e-e Experiments

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