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We describe a FORTRAN 77 implementation of the optimal jet definition for identification of jets in hadronic final states of particle collisions. We discuss details of the implementation, explain interface subroutines and provide a usage…

High Energy Physics - Phenomenology · Physics 2009-11-10 D. Yu. Grigoriev , E. Jankowski , F. V. Tkachov

The fortran-77 code [hep-ph/9912415] of the jet algorithm based on the optimal jet definition [hep-ph/9901444] has been successfully verified (up to a few interface bugs) using an independently evolved code written in the object-oriented…

High Energy Physics - Phenomenology · Physics 2007-05-23 F. V. Tkachov

A systematic framework for jet definition is developed from first principles of physical measurement, quantum field theory, and QCD. A jet definition is found which: is theoretically optimal in regard of both minimization of detector errors…

High Energy Physics - Phenomenology · Physics 2009-10-31 Fyodor V. Tkachov

In a simulated measurement of the $W$-boson mass, evaluation of Fisher's information shows the optimal jet definition to be physically equivalent to the $k_\mathrm{T}$ algorithm while being much faster at large multiplicities.

High Energy Physics - Phenomenology · Physics 2009-11-10 D. Yu. Grigoriev , E. Jankowski , F. V. Tkachov

We present a next-to-leading order QCD calculation for the single-inclusive production of collimated jets at hadron colliders, when the jet is defined by maximizing a suitable jet function that depends on the momenta of final-state…

High Energy Physics - Phenomenology · Physics 2015-03-05 Tom Kaufmann , Asmita Mukherjee , Werner Vogelsang

I give a short summary of jet definition algorithms and recent progress in the quantitative description of jet production.

High Energy Physics - Phenomenology · Physics 2009-11-07 Zoltan Kunszt

Many jet algorithms have been proposed in the past to study the hadronic final state in E+E-, EP and PP collisions. Here we review some of the most popular, mainly concentrating on the jet algorithms used at HERA and TEVATRON.

High Energy Physics - Phenomenology · Physics 2007-05-23 S. V. Chekanov

A C++ implementation of the Kt jet algorithm for high energy particle collisions is presented. The time performance of this implementation is comparable to the widely used Fortran implementation. Identical algorithmic functionality is…

High Energy Physics - Phenomenology · Physics 2009-11-07 J. M. Butterworth , J. P. Couchman , B. E. Cox , B. M. Waugh

This talk reviews some key developments that have taken place in hadron-collider jet finding over the past couple of years, including: technical advances such as the complete formulation of an infrared safe seedless cone algorithm and fast…

High Energy Physics - Phenomenology · Physics 2009-01-16 Gavin P. Salam

I illustrate a general formalism based upon the subtraction method for the calculation of next-to-leading order QCD cross sections for any number of jets in any type of hard collisions. I discuss the implementation of this formalism in a…

High Energy Physics - Phenomenology · Physics 2009-10-30 S. Frixione

While "quark" and "gluon" jets are often treated as separate, well-defined objects in both theoretical and experimental contexts, no precise, practical, and hadron-level definition of jet flavor presently exists. To remedy this issue, we…

High Energy Physics - Phenomenology · Physics 2018-11-13 Patrick T. Komiske , Eric M. Metodiev , Jesse Thaler

Compliant mechanisms achieve motion through elastic deformation. In this work, we address the synthesis of a compliant cross-hinge mechanism capable of large angular strokes while approximating the behavior of an ideal revolute joint. To…

Numerical Analysis · Mathematics 2025-04-24 Alexander Humer , Sebastian Platzer

From dedicated QCD studies to new physics background estimation, jets will be everywhere at the LHC. In these proceedings, we discuss two important recent series of improvements. In the first one, we introduce new algorithms and new…

High Energy Physics - Phenomenology · Physics 2015-05-13 Gregory Soyez

Recent progress in the perturbative analysis of hadronic jets, especially in the context of hadron colliders, is discussed. The characteristic feature of this work is the emergence of a level of precision in the study of the strong…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. D. Ellis

Predictions from a new next-to-leading order (NLO) calculation for direct and resolved photoproduction of one and two jets are compared to simulated HERA data. We propose a method to match experimental and theoretical jet definitions and…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. M. Butterworth , L. Feld , M. Klasen , G. Kramer

We calculate the subjet rates for jets produced in hadron collisions. The kt algorithm is used to define the jets and allows the theoretical calculation to sum both the leading and next-to-leading logarithms in the resolution variable,…

High Energy Physics - Phenomenology · Physics 2010-02-03 J. R. Forshaw , M. H. Seymour

The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing $b$-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency with which…

High Energy Physics - Experiment · Physics 2020-01-29 ATLAS Collaboration

Jet substructure has provided new opportunities for searches and measurements at the LHC, and has seen continuous development since the optimization of the large-radius jet definition used by ATLAS was performed during Run 1. A range of new…

High Energy Physics - Experiment · Physics 2021-05-05 ATLAS Collaboration

This contribution reports preliminary jet results in ppbar collisions at sqrt(s)=1.96 TeV from the CDF and D0 experiments. The jet inclusive cross section, measured using both the Midpoint and the K_T jet clustering algorithm, is compared…

High Energy Physics - Experiment · Physics 2007-05-23 Andrea Messina

In the context of the hybrid strong/weak coupling model for jet quenching, we perform a global fit to hadron and jet data in the most central bins both at RHIC and LHC. The qualitative and quantitative success of the analysis is attributed…

High Energy Physics - Phenomenology · Physics 2019-02-20 Jorge Casalderrey-Solana , Zachary Hulcher , Guilherme Milhano , Daniel Pablos , Krishna Rajagopal
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