Machine learning-based event generator for electron-proton scattering
Yasir Alanazi, P. Ambrozewicz, M. Battaglieri, A. N. Hiller Blin, Michelle Kuchera, Yaohang Li, Tianbo Liu, R. E. McClellan, Wally Melnitchouk, E. Pritchard, M. Robertson, N. Sato, Ryan R. Strauss, Luisa Velasco
Abstract
We present a new machine learning-based Monte Carlo event generator using generative adversarial networks (GANs) that can be trained with calibrated detector simulations to construct a vertex-level event generator free of theoretical assumptions about femtometer scale physics. Our framework includes a GAN-based detector folding as a fast-surrogate model that mimics detector simulators. The framework is tested and validated on simulated inclusive deep-inelastic scattering data along with existing parametrizations for detector simulation, with uncertainty quantification based on a statistical bootstrapping technique. Our results provide for the first time a realistic proof of concept to mitigate theory bias in inferring vertex-level event distributions needed to reconstruct physical observables.