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Khuri-Treiman analysis of J/psitoπ⁺π⁻π⁰

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arxiv 2304.09736 v1 pith:7W4DYA5Z submitted 2023-04-19 hep-ph hep-exnucl-th

Khuri-Treiman analysis of J/psitoπ⁺π⁻π⁰

JPAC Collaboration: M. Albaladejo , S. Gonz\`alez-Sol\'is , \L. Bibrzycki , C. Fern\'andez-Ram\'irez , N. Hammoud , V. Mathieu , M. Mikhasenko , G. Monta\~na
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R. J. Perry A. Pilloni A. Rodas W. A. Smith A. Szczepaniak D. Winney
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classification hep-ph hep-exnucl-th
keywords amplitudekhuri-treimanmassregionwaveanalysisaroundbesiii
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the decay $J/\psi\to\pi^{+}\pi^{-}\pi^{0}$ within the framework of the Khuri-Treiman equations. We find that the BESIII experimental di-pion mass distribution in the $\rho(770)$-region is well reproduced with a once-subtracted $P$-wave amplitude. Furthermore, we show that $F$-wave contributions to the amplitude improve the description of the data in the $\pi\pi$ mass region around 1.5 GeV. We also present predictions for the $J/\psi\to\pi^{0}\gamma^{*}$ transition form factor.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Dispersive analysis of the $J/\psi\to\pi^0 \gamma^\ast$ transition form factor with $\rho$-$\omega$ mixing effects

    hep-ph 2025-11 unverdicted novelty 7.0

    Dispersive analysis with ρ-ω mixing produces a two-parameter fit describing BESIII data on the J/ψ→π⁰γ* form factor from 0 to 2.8 GeV and extracts a (62 ± 21)° relative phase between strong and electromagnetic modes.

  2. Production Effects and Final-state Interactions in $\pi_1 \to 3\pi$

    hep-ph 2026-07 conditional novelty 6.0

    A Khuri-Treiman model with contact and one-pion-exchange production terms fits COMPASS's π1→3π freed-isobar data and produces a smooth 1.6 GeV structure in the extracted production strengths.