Volume 499 - The Thirteenth Annual Large Hadron Collider Physics (LHCP2025) - session Poster / Other Contributon
Automatizing the search for mass resonances using BumpNet
M.K.L. Chu
Full text: pdf
Pre-published on: December 29, 2025
Published on: March 23, 2026
Abstract
Modern experimental physics research, particularly in particle physics, requires extensive data analysis efforts to identify significant signals indicative of new physics. We present BumpNet, a novel Neural Network (NN) architecture designed to conduct model-independent searches for mass bumps arising from new physics phenomena. This model maps invariant mass histograms into statistical inference distributions to facilitate efficient signal detection. By focusing on experimental data without relying on simulations, BumpNet enables the identification of exclusive selections that significantly deviate from the Standard Model’s known properties, marking them for further study. The NN minimizes resource-intensive tasks such as background estimation and systematic uncertainty evaluation, enabling rapid testing of multiple final states with only minor sensitivity loss compared to standard likelihood-based methods.

The model’s performance is validated using training data from the Dark Machines dataset, with its predicted significance benchmarked against an ideal likelihood analysis. The results demonstrate negligible bias and variance below 1$\sigma$ when tested on Gaussian-shaped signals. Furthermore, BumpNet’s consistency is evaluated using data from the ATLAS Higgs discovery, reinforcing its reliability and applicability in real-world analyses.
DOI: https://doi.org/10.22323/1.499.0175
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