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We present a topology-informed approach for classifying particle jets using persistent homology, a framework that captures the structural properties of point clouds. Particle jets produced in proton-proton collisions consist of cascades of…

High Energy Physics - Phenomenology · Physics 2026-01-06 Saurav Mittal

We introduce a novel anomaly search method based on (i) jet tagging to select interesting events, which are less likely to be produced by background processes; (ii) comparison of the untagged and tagged samples to single out features (such…

High Energy Physics - Phenomenology · Physics 2022-03-02 J. A. Aguilar-Saavedra

Studying heavy-flavor jets in pp collision is important since they can test pQCD calculations and be used as a reference for heavy-ion collisions. Jets in this analysis are reconstructed from charged particles using the…

High Energy Physics - Phenomenology · Physics 2025-04-28 Hadi Hassan , Neelkamal Mallick , D. J. Kim

Interest in deep learning in collider physics has been growing in recent years, specifically in applying these methods in jet classification, anomaly detection, particle identification etc. Among those, jet classification using neural…

High Energy Physics - Phenomenology · Physics 2024-08-05 Camellia Bose , Amit Chakraborty , Shreecheta Chowdhury , Saunak Dutta

Jet point cloud images are high dimensional data structures that needs to be transformed to a separable feature space for machine learning algorithms to distinguish them with simple decision boundaries. In this article, the authors focus on…

High Energy Physics - Phenomenology · Physics 2024-07-08 Jairo Orozco Sandoval , Vidya Manian , Sudhir Malik

Building on the notion of a particle physics detector as a camera and the collimated streams of high energy particles, or jets, it measures as an image, we investigate the potential of machine learning techniques based on deep learning…

High Energy Physics - Phenomenology · Physics 2017-01-24 Luke de Oliveira , Michael Kagan , Lester Mackey , Benjamin Nachman , Ariel Schwartzman

Jet flavor tagging, the identification of jets originating from $c$-quarks, $b$-quarks, and other quarks (light quarks and gluons), is a crucial task in high-energy heavy-ion physics, as it enables the investigation of flavor-dependent…

Instrumentation and Detectors · Physics 2025-10-29 Hangil Jang , Sanghoon Lim

A tagging algorithm to identify jets that are significantly displaced from the proton-proton (pp) collision region in the CMS detector at the LHC is presented. Displaced jets can arise from the decays of long-lived particles (LLPs), which…

High Energy Physics - Experiment · Physics 2020-10-16 CMS Collaboration

Tagging jets of strongly interacting particles initiated by energetic strange quarks is one of the few largely unexplored Standard Model object classification problems remaining in high energy collider physics. In this paper we investigate…

High Energy Physics - Phenomenology · Physics 2020-03-24 Yuichiro Nakai , David Shih , Scott Thomas

Deep Learning approaches are becoming the go-to methods for data analysis in High Energy Physics (HEP). Nonetheless, most physics-inspired modern architectures are computationally inefficient and lack interpretability. This is especially…

Computational Physics · Physics 2023-01-31 Jose M Munoz , Ilyes Batatia , Christoph Ortner

Deep learning methods have been increasingly adopted to study jets in particle physics. Since symmetry-preserving behavior has been shown to be an important factor for improving the performance of deep learning in many applications, Lorentz…

High Energy Physics - Phenomenology · Physics 2022-11-09 Shiqi Gong , Qi Meng , Jue Zhang , Huilin Qu , Congqiao Li , Sitian Qian , Weitao Du , Zhi-Ming Ma , Tie-Yan Liu

Jet tagging has become an essential tool for new physics searches at the high-energy frontier. For jets that contain energetic charged leptons we introduce Feature Extended Supervised Tagging (FEST) which, in addition to jet substructure,…

High Energy Physics - Phenomenology · Physics 2021-09-01 J. A. Aguilar-Saavedra

A key question for machine learning approaches in particle physics is how to best represent and learn from collider events. As an event is intrinsically a variable-length unordered set of particles, we build upon recent machine learning…

High Energy Physics - Phenomenology · Physics 2020-04-17 Patrick T. Komiske , Eric M. Metodiev , Jesse Thaler

We present the development and validation of a new multivariate $b$ jet identification algorithm ("$b$ tagger") used at the CDF experiment at the Fermilab Tevatron. At collider experiments, $b$ taggers allow one to distinguish particle jets…

High Energy Physics - Experiment · Physics 2011-12-07 J. Freeman , W. Ketchum , J. D. Lewis , S. Poprocki , A. Pronko , V. Rusu , P. Wittich

Jet flavor tagging is of utmost importance for unlocking the full physics potential of any future collider experiment. The performance of any jet flavor identification algorithm depends both on its underlying architecture and on the…

Instrumentation and Detectors · Physics 2025-01-29 Dimitrios Ntounis , Loukas Gouskos , Caterina Vernieri

Autoencoders are widely used in machine learning applications, in particular for anomaly detection. Hence, they have been introduced in high energy physics as a promising tool for model-independent new physics searches. We scrutinize the…

High Energy Physics - Phenomenology · Physics 2021-07-15 Thorben Finke , Michael Krämer , Alessandro Morandini , Alexander Mück , Ivan Oleksiyuk

Nowadays, there has been a growing trend in the field of high-energy physics (HEP), in both its experimental and phenomenological studies, to incorporate machine learning (ML) and its specialized branch, deep learning (DL). This review…

High Energy Physics - Phenomenology · Physics 2025-10-27 Hamza Kheddar , Yassine Himeur , Abbes Amira , Rachik Soualah

Jet flavour tagging is crucial in experimental high-energy physics. A tagging algorithm, DeepJetTransformer, is presented, which exploits a transformer-based neural network that is substantially faster to train than state-of-the-art graph…

High Energy Physics - Experiment · Physics 2025-02-11 Freya Blekman , Florencia Canelli , Alexandre De Moor , Kunal Gautam , Armin Ilg , Anna Macchiolo , Eduardo Ploerer

Using deep neural networks for identifying physics objects at the Large Hadron Collider (LHC) has become a powerful alternative approach in recent years. After successful training of deep neural networks, examining the trained networks not…

High Energy Physics - Phenomenology · Physics 2023-01-23 Taoli Cheng

Machine learning has played a pivotal role in advancing physics, with deep learning notably contributing to solving complex classification problems such as jet tagging in the field of jet physics. In this experiment, we aim to harness the…

High Energy Physics - Phenomenology · Physics 2023-11-27 Mauricio A. Diaz , Giorgio Cerro , Jacan Chaplais , Srinandan Dasmahapatra , Stefano Moretti