Results 51 to 60 of about 3,273 (173)

Lund and Cambridge multiplicities for precision physics

open access: yesJournal of High Energy Physics, 2022
We revisit the calculation of the average jet multiplicity in high-energy collisions. First, we introduce a new definition of (sub)jet multiplicity based on Lund declusterings obtained using the Cambridge jet algorithm.
Rok Medves   +2 more
doaj   +1 more source

The simplicial substructure of jets

open access: yes, 2023
In this work, we construct a new data type for hadronic jets in which the traditional point-cloud representation is transformed into a simplicial complex consisting of vertices, or 0-simplexes. An angular resolution scale, $r$, is then drawn about each vertex, forming balls about hadrons.
Gaertner, Tejes, Reiten, Jared
openaire   +2 more sources

A search for tt¯ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at s√=7 TeV with the ATLAS detector [PDF]

open access: yes, 2012
A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb−1 of proton-proton collisions at s√=7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider.
Ferrando, James
core   +3 more sources

Probing jet hadrochemistry modification with measurements of π, K, and p in jets and the underlying event in pp and Pb–Pb collisions at √sNN = 5.02 TeV [PDF]

open access: yesEPJ Web of Conferences
Measurements of jet substructure observables in heavy-ion (HI) collisions provide powerful constraints on the microscopic mechanisms of interactions between energetic partons and the quark–gluon plasma (QGP).
Cantway Sierra
doaj   +1 more source

ATLAS Jet Reconstruction, Calibration, and Tagging of Lorentzboosted Objects

open access: yesEPJ Web of Conferences, 2018
Jet reconstruction in the ATLAS detector takes multiple forms, as motivated by the intended usage of the jet. Different jet definitions are used in particular for the study of QCD jets and jets containing the hadronic decay of boosted massive particles ...
Schramm Steven
doaj   +1 more source

Invariant representation driven neural classifier for anti-QCD jet tagging

open access: yesJournal of High Energy Physics, 2022
We leverage representation learning and the inductive bias in neural-net-based Standard Model jet classification tasks, to detect non-QCD signal jets. In establishing the framework for classification-based anomaly detection in jet physics, we demonstrate
Taoli Cheng, Aaron Courville
doaj   +1 more source

Computing N -subjettiness for boosted jets

open access: yesJournal of High Energy Physics, 2018
Jet substructure tools have proven useful in a number of high-energy particle-physics studies. A particular case is the discrimination, or tagging, between a boosted jet originated from an electroweak boson (signal), and a standard QCD parton (background)
Davide Napoletano, Gregory Soyez
doaj   +1 more source

Tagging a jet from a dark sector with jet substructures at colliders [PDF]

open access: yesPhysical Review D, 2019
The phenomenology of dark sector is complicated if dark sector is charged under a confined hidden gauge group. In such kind of model, a dark parton produced at a high energy collider showers and hadronize to a cluster of dark mesons. Dark mesons then decay to visible particles and produce a jet-like signal, which is called "dark jet" in this work ...
Myeonghun Park, Mengchao Zhang
openaire   +2 more sources

First measurements of N-subjettiness in central Pb-Pb collisions at s NN $$ \sqrt{s_{\mathrm{NN}}} $$ = 2.76 TeV

open access: yesJournal of High Energy Physics, 2021
The ALICE Collaboration reports the first fully-corrected measurements of the N-subjettiness observable for track-based jets in heavy-ion collisions. This study is performed using data recorded in pp and Pb-Pb collisions at centre-of-mass energies of s $$
The ALICE collaboration   +1027 more
doaj   +1 more source

A COMPARATIVE STUDY OF JET SUBSTRUCTURE TAGGERS [PDF]

open access: yesInternational Journal of Modern Physics A, 2013
We explicitly study how jet substructure taggers act on a set of signal and background events. We focus on two-pronged hadronic decay of a boosted Z-boson. The background to this process comes from QCD jets with masses of the order of mZ. We find a way to compare various taggers within a single framework by applying them to the most relevant splitting
Quiroga-Arias, Paloma, Sapeta, Sebastian
openaire   +2 more sources

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