19–21 mai 2025
IPHC
Fuseau horaire Europe/Paris

Profile Likelihoods on ML-Steroids

20 mai 2025, 17:00
15m
Amphi Grünewald (IPHC)

Amphi Grünewald

IPHC

Institut Pluridisciplinaire Hubert Curien 23 rue du Loess 67200 Strasbourg
Methods and Tools Methods and Tools

Orateur

Nikita Schmal (ITP, Heidelberg University)

Description

Global SMEFT analyses combine a vast range of LHC measurements to construct likelihoods to put constraints on physics beyond the Standard Model. However, constructing and evaluating profile likelihoods for such analyses is computationally intensive and prone to instability and noise. We show how modern numerical techniques, similar to neural importance sampling, can dramatically enhance both efficiency and stability. Specifically, we focus on datasets used in previous SFitter analyses, combining data from the Top sector with Higgs, Di-Boson, and electroweak precision measurements to simultaneously constrain up to 42 Wilson coefficients.

Author

Nikita Schmal (ITP, Heidelberg University)

Documents de présentation