Towards Universal Unfolding using Denoising Diffusion
C. Pazos*, S. Aeron, P.H. Beauchemin, V. Croft, M. Klassen and T. Wongjirad
Pre-published on:
January 02, 2025
Published on:
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Abstract
Correcting for detector effects in experimental data, particularly through unfolding, is critical for enabling precision measurements in high-energy physics. However, traditional unfolding methods face challenges in scalability, flexibility, and dependence on simulations. We introduce a novel approach to multidimensional object-wise unfolding using conditional Denoising Diffusion Probabilistic Models (cDDPM). Our method utilizes the cDDPM for a non-iterative, flexible posterior sampling approach, incorporating distribution moments as conditioning information, which exhibits a strong inductive bias that allows it to generalize to unseen physics processes without explicitly assuming the underlying distribution. Our results highlight the potential of this method as a step towards a "universal" unfolding tool that reduces dependence on truth-level assumptions, while enabling the unfolding of a wide range of measured distributions with enhanced flexibility and accuracy.
DOI: https://doi.org/10.22323/1.478.0234
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