15th International Workshop on Boosted Object Phenomenology, Reconstruction, Measurements, and Searches at Colliders

Session

New Observables

2 Aug 2023, 09:00

Auditorium (50)

Conveners

New Observables

• Andrew Larkoski
• Javier Duarte

82. Resolving Extreme Jet Substructure

Dr Michael Fenton (University of California, Irvine)

02/08/2023, 09:00

We study the effectiveness of theoretically-motivated high-level jet observables in the extreme context of jets with a large number of hard sub-jets (up to N=8). Previous studies indicate that high-level observables are powerful, interpretable tools to probe jet substructure for N≤3 hard sub-jets, but that deep neural networks trained on low-level jet constituents match or slightly exceed...

95. Moment Pooling: Gaining Performance and Interpretability Through Physics Inspired Product Structures

Mr Rikab Gambhir (MIT)

02/08/2023, 09:20

As machine learning begins to play an increasingly larger role in high energy physics, it is important to understand and interpret what precisely these models learn. In this work, we propose Moment Pooling architectures, which generalizes the summation in standard Deep Sets architectures to an arbitrary multivariate moments. This can be used to drastically decrease latent space sizes,...

109. A Field Guide for Event Isotropy

Cari Cesarotti (MIT)

02/08/2023, 09:40

In this talk, we present several variations, applications, and analytic interpretations of the event-shape observable event isotropy. We explore how the the observable can be altered, e.g. by varying the distance metric, the reference topology, the underlying geometry, etc., to be more or less sensitive to features of the event. With these studies one can improve their discrimination power...

116. Perturbatively Regularized Neural Networks

Arianna Garcia Caffaro (Yale University)

02/08/2023, 10:00

We present a class of Neural Networks which extends the notion of Energy Flow Networks (EFNs) to higher-order particle correlations. The structure of these networks is inspired by the Energy-Energy Correlators of QFT, which are particularly robust against non-perturbative corrections. By studying the response of our models to the presence and absence of non-perturbative hadronization, we can...

99. Novel approach to measure quark/gluon jets at the LHC

Andrzej Siódmok (Jagiellonian University), Michael H. Seymour (The Manchester University), Petr Baron (IFJ PAN)

02/08/2023, 10:20

In this talk, we present a new proposal on how to measure quark/gluon jet properties at the Large Hadron Collider (LHC). The main advantage of this approach is that our construction of an observable allows a single set of experimental cuts to be used to select jets, keeping all detector parameters unchanged, and in this way, reducing many systematic uncertainties. We will discuss the details...