Deep Neural Network Driven Simulation Based Inference Method for Pole Position Estimation under Model Misspecification (opens in new tab)

arXiv:2507.18824v2 Announce Type: replace-cross Abstract: Simulation Based Inference (SBI) is shown to yield more accurate resonance parameter estimates than traditional chi-squared minimization in certain cases of model misspecification, demonstrated through a case study of pi-pi scattering and the rho(770) resonance. Models fit to some data sets using chi-squared minimization can predict inaccurate pole positions for the rho(770), while SBI provides more robust predictions across the same m...