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Two suggested models of jet fragmentation in a quark-gluon plasma have been tested, combined and further developed. This has been done by generating hard processes in proton-proton collisions at $\sqrt{s}=2.76$ GeV in PYTHIA 8 with a…

High Energy Physics - Phenomenology · Physics 2011-09-15 Viktor Linders

We consider jet-shape observables of the type proposed recently, where the shapes of one or more high-pT jets, produced in a multi-jet event with definite jet multiplicity, may be measured leaving other jets in the event unmeasured. We…

High Energy Physics - Phenomenology · Physics 2015-03-14 Andrea Banfi , Mrinal Dasgupta , Kamel Khelifa-Kerfa , Simone Marzani

Jet production in deep inelastic scattering for $120<Q^2<3600$~GeV$^2$ has been studied using data from an integrated luminosity of 3.2~pb$^{-1}$ collected with the ZEUS detector at HERA. Jets are identified with the JADE algorithm. A cut…

High Energy Physics - Experiment · Physics 2012-08-27 The ZEUS Collaboration

Events with a (2+1) jet topology in deep-inelastic scattering at HERA are studied in the kinematic range 200 < Q^2< 10,000 GeV^2. The rate of (2+1) jet events has been determined with the modified JADE jet algorithm as a function of the jet…

High Energy Physics - Experiment · Physics 2008-11-26 C. Adloff

The differential charged jet cross sections, jet fragmentation distributions, and jet shapes are measured in minimum bias proton-proton collisions at centre-of-mass energy $\sqrt{s}=7$ TeV using the ALICE detector at the LHC. Jets are…

Nuclear Experiment · Physics 2015-10-14 ALICE Collaboration

Many experimental analyses separate events into exclusive jet bins, using a jet algorithm to cluster the final state and then veto on jets. Jet clustering induces logarithmic dependence on the jet radius R in the cross section for exclusive…

High Energy Physics - Phenomenology · Physics 2014-11-25 Simone Alioli , Jonathan R. Walsh

Latent representations are an important theme in modern machine learning. Any network training with the notion of locality introduces a latent geometry which we can analyze with the help of differential geometry, specifically information…

High Energy Physics - Phenomenology · Physics 2026-05-07 Rebecca Maria Kuntz , Tilman Plehn , Björn Malte Schäfer , Benedikt Schosser , Sophia Vent

QCD color coherence phenomena, like angular ordering, can be studied by looking at jet fragmentation. As the jet is fragmenting, it is expected to go through two different phases. First, there is QCD branching that is calculable in…

High Energy Physics - Experiment · Physics 2019-08-13 Jussi Viinikainen

We briefly describe a new general algorithm for carrying out QCD calculations to next-to-leading order in perturbation theory. The algorithm can be used for computing arbitrary jet cross sections in arbitrary processes and can be…

High Energy Physics - Phenomenology · Physics 2007-05-23 Stefano Catani , Michael H. Seymour

A deep-learning approach based on the transformer architecture is developed to distinguish between jets originating from quarks and gluons. The algorithm operates on jets with transverse momentum $p_{\text{T}} > 20$ and pseudorapidity…

High Energy Physics - Experiment · Physics 2025-12-04 ATLAS Collaboration

The proposed distributed dynamic clustering algorithm enables to group agents based on their pre-selected feature states. The clusters are determined by comparing the distance of the agents' current feature states with average estimates of…

Systems and Control · Electrical Eng. & Systems 2024-12-20 Runfan Zhang , Branislav Hredzak

Cluster analysis which focuses on the grouping and categorization of similar elements is widely used in various fields of research. Inspired by the phenomenon of atomic fission, a novel density-based clustering algorithm is proposed in this…

Machine Learning · Computer Science 2020-04-28 Shizhan Lu

In this paper, we present a new method to efficiently generate jets in High Energy Physics called PC-JeDi. This method utilises score-based diffusion models in conjunction with transformers which are well suited to the task of generating…

High Energy Physics - Phenomenology · Physics 2024-02-22 Matthew Leigh , Debajyoti Sengupta , Guillaume Quétant , John Andrew Raine , Knut Zoch , Tobias Golling

Hydrodynamical simulations of jets interacting with clouds moving in the ambient medium of the host galaxy are presented. Clouds with sizes of the order of the jet diameter and smaller, crossing the path of the jet with different speeds are…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 S. Jeyakumar

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

New measurements of the jet shape in ep collisions at HERA using the k_T-cluster jet algorithm are presented.

High Energy Physics - Experiment · Physics 2008-11-26 J. Terron

With the explosion of data on jet based observables in relativistic heavy-ion collisions at the Large Hadron Collider and the Relativistic Heavy-Ion Collider, perturbative QCD based simulations of these processes, often interacting with an…

High Energy Physics - Phenomenology · Physics 2024-01-19 Shanshan Cao , Abhijit Majumder , Rouzbeh Modarresi-Yazdi , Ismail Soudi , Yasuki Tachibana

Artificial intelligence offers the potential to automate challenging data-processing tasks in collider physics. To establish its prospects, we explore to what extent deep learning with convolutional neural networks can discriminate quark…

High Energy Physics - Phenomenology · Physics 2018-09-06 Patrick T. Komiske , Eric M. Metodiev , Matthew D. Schwartz

The classification of events involving jets as signal-like or background-like can depend strongly on the jet algorithm used and its parameters. This is partly due to the fact that standard jet algorithms yield a single partition of the…

High Energy Physics - Phenomenology · Physics 2015-06-15 Dilani Kahawala , David Krohn , Matthew D. Schwartz

Jet substructure in heavy-ion collisions is a rapidly evolving area with lots of intriguing new measurements. This contribution presents a selection of recent jet-substructure measurements from experiments at the LHC, in particular,…

Nuclear Experiment · Physics 2024-10-08 Robert Vertesi
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