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T reatment of an unstable field The propagator of an unstable particleCin the relativistic Breit-Winger approximation reads ∆C(E,k)≡∆ C(k) = i k2 −m 2 C +im CΓC +iε ≃ i 2ωC(k) " 1

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2025 1

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Scattering off unstable states

hep-ph · 2025-07-03 · conditional · novelty 6.0

A finite-time QFT treatment removes the t-channel singularity that appears when an unstable particle scatters off another particle.

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  • Scattering off unstable states hep-ph · 2025-07-03 · conditional · none · ref 5

    A finite-time QFT treatment removes the t-channel singularity that appears when an unstable particle scatters off another particle.