11–15 Dec 2023
School of Physics
Australia/Sydney timezone

Anomaly aware machine learning for dark matter direct detection at DARWIN

14 Dec 2023, 15:00
30m
Slade Lecture Theatre (School of Physics)

Slade Lecture Theatre

School of Physics

University of Sydney, Camperdown

Speaker

Andre Joshua Scaffidi

Description

This talk presents a novel approach to dark matter direct detection using anomaly-aware machine learning techniques in the DARWIN next-generation dark matter direct detection experiment. I will introduce a semi-unsupervised deep learning pipeline that falls under the umbrella of generalized Simulation-Based Inference (SBI), an approach that allows one to effectively learn likelihoods straight from simulated data, without the need for complex functional dependence on systematics or nuisance parameters. I also present an inference procedure to detect non-background physics utilizing an anomaly function derived from the loss functions of the semi-unsupervised architecture. The pipeline's performance is evaluated using pseudo-data sets in a sensitivity forecasting task, and the results suggest that it offers improved sensitivity over traditional methods.

Authors

Presentation materials