Model dependence of the π1 (1600) → ρ(770)π signal


  • Fabian Krinner Max-Planck-Institut für Physik



Hadron spectroscopy, COMPASS experiment, partial-wave analysis, isobar model, meson resonance, exotic, pi1(1600), rho(770)


Using the large C OMPASS data set on diffractive three pion production, we investigate the contradictory observations reported by previous experiments on the existence of a resonance signal in the spin-exotic wave with spin, parity and charge conjugation quantum numbers 1−+ . We identify a strong dependence of the result on the employed analysis model as the cause and derive a model tuned to minimize these effects. Additionally, we study the robustness of our analysis model using the approach of freed-isobar partial-wave analysis.


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See data tables in HEPData




How to Cite

Krinner F. Model dependence of the π1 (1600) → ρ(770)π signal. Supl. Rev. Mex. Fis. [Internet]. 2022 Jun. 10 [cited 2024 May 20];3(3):0308015 1-6. Available from: