# 19th International Conference on Hadron Spectroscopy and Structure in memoriam Simon Eidelman

26-31 July 2021
Mexico City
Mexico/General timezone
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# Contribution Parallel

Mexico City -
Meson Spectroscopy

# Model dependence of the $\pi_1(1600)\to\rho(770)\pi$ signal

## Speakers

• Dr. Fabian KRINNER

## Abstract

Using the large COMPASS data set for diffractive three pion production, we investigate the contradictions found by previous experiments in the signal of the spin-exotic wave with spin, parity and charge conjugation quantum numbers $1^{-+}$. We determine a strong dependence on the analysis model as their cause and in turn create a model tuned to minimize such effects. Additionally, we study the robustness of our model using the of approach of freed-isobar partial-wave analysis.