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One of the most important problems of data processing in high energy and nuclear physics is the event reconstruction. Its main part is the track reconstruction procedure which consists in looking for all tracks that elementary particles…

Machine Learning · Computer Science 2019-10-02 Dmitriy Baranov , Sergey Mitsyn , Pavel Goncharov , Gennady Ososkov

For the past year, the HEP.TrkX project has been investigating machine learning solutions to LHC particle track reconstruction problems. A variety of models were studied that drew inspiration from computer vision applications and operated…

One of the most important problems of data processing in high energy and nuclear physics is the event reconstruction. Its main part is the track reconstruction procedure which consists in looking for all tracks that elementary particles…

Machine Learning · Computer Science 2019-02-20 Dmitriy Baranov , Gennady Ososkov , Pavel Goncharov , Andrei Tsytrinov

Reconstructing charged particle tracks is a fundamental task in modern collider experiments. The unprecedented particle multiplicities expected at the High-Luminosity Large Hadron Collider (HL-LHC) pose significant challenges for track…

High Energy Physics - Experiment · Physics 2025-12-16 Samuel Van Stroud , Philippa Duckett , Max Hart , Nikita Pond , Sébastien Rettie , Gabriel Facini , Tim Scanlon

Particle track reconstruction is the most computationally intensive process in nuclear physics experiments. Traditional algorithms use a combinatorial approach that exhaustively tests track measurements ("hits") to identify those that form…

Computer Vision and Pattern Recognition · Computer Science 2022-04-29 Polykarpos Thomadakis , Angelos Angelopoulos , Gagik Gavalian , Nikos Chrisochoides

Accurate measuring the location and orientation of individual particles in a beam monitoring system is of particular interest to researchers in multiple disciplines. Among feasible methods, gaseous drift chambers with hybrid pixel sensors…

Data Analysis, Statistics and Probability · Physics 2020-09-22 Pengcheng Ai , Dong Wang , Xiangming Sun , Guangming Huang , Zili Li

High-energy physics experiments require fast and efficient methods for reconstructing the tracks of charged particles. The commonly used algorithms are sequential, and the required CPU power increases rapidly with the number of tracks.…

High Energy Physics - Experiment · Physics 2023-12-06 Marcin Kucharczyk , Marcin Wolter

Unprecedented increase of complexity and scale of data is expected in computation necessary for the tracking detectors of the High Luminosity Large Hadron Collider (HL-LHC) experiments. While currently used Kalman filter based algorithms…

Particle track reconstruction is traditionally computationally challenging due to the combinatorial nature of the tracking algorithms employed. Recent developments have focused on novel algorithms with graph neural networks (GNNs), which…

Data Analysis, Statistics and Probability · Physics 2025-06-05 Jay Chan , Brandon Wang , Paolo Calafiura

Track reconstruction is a vital aspect of High-Energy Physics (HEP) and plays a critical role in major experiments. In this study, we delve into unexplored avenues for particle track reconstruction and hit clustering. Firstly, we enhance…

We present track reconstruction algorithms based on deep learning, tailored to overcome specific central challenges in the field of hadron physics. Two approaches are used: (i) deep learning (DL) model known as fully-connected neural…

High Energy Physics - Experiment · Physics 2025-03-19 Adeel Akram , Xiangyang Ju , Michael Papenbrock , Jenny Taylor , Tobias Stockmanns , Karin Schönning

Recent work has demonstrated that geometric deep learning methods such as graph neural networks (GNNs) are well suited to address a variety of reconstruction problems in high energy particle physics. In particular, particle tracking data is…

High Energy Physics - Experiment · Physics 2023-02-07 Gage DeZoort , Savannah Thais , Javier Duarte , Vesal Razavimaleki , Markus Atkinson , Isobel Ojalvo , Mark Neubauer , Peter Elmer

Deep neural networks, albeit their great success on feature learning in various computer vision tasks, are usually considered as impractical for online visual tracking because they require very long training time and a large number of…

Computer Vision and Pattern Recognition · Computer Science 2016-05-04 Hanxi Li , Yi Li , Fatih Porikli

Combinatorial inverse problems in high energy physics span enormous algorithmic challenges. This work presents a new deep learning driven clustering algorithm that utilizes a space-time non-local trainable graph constructor, a graph neural…

High Energy Physics - Phenomenology · Physics 2023-09-26 Mikael Mieskolainen

Track reconstruction is a crucial task in particle experiments and is traditionally very computationally expensive due to its combinatorial nature. Recently, graph neural networks (GNNs) have emerged as a promising approach that can improve…

Data Analysis, Statistics and Probability · Physics 2024-07-22 Paolo Calafiura , Jay Chan , Loic Delabrouille , Brandon Wang

Deep learning tools are being used extensively in high energy physics and are becoming central in the reconstruction of neutrino interactions in particle detectors. In this work, we report on the performance of a graph neural network in…

We present the study of an end-to-end multi-track reconstruction algorithm for the central drift chamber of the Belle II experiment at the SuperKEKB collider using Graph Neural Networks for an unknown number of particles. The algorithm uses…

CR-39 solid-state nuclear track detectors are widely used in fusion research for detecting charged particles produced in fusion reactions. However, analyzing increasingly complex and large-scale CR-39 track images to extract meaningful…

Instrumentation and Detectors · Physics 2025-05-13 Yuxing Wang , Allan Xi Chen , Matthew Salazar , Nawar Abdalla , Zhifei Li , Benjamin Wrixon

We present a flexible and scalable approach to address the challenges of charged particle track reconstruction in real-time event filters (Level-1 triggers) in collider physics experiments. The method described here is based on a full-mesh…

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