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Jet substructure in pp collisions with ALICE

Jet substructure observables have been used by experiments at the Large Hadron Collider (LHC) as instruments to search for new physics as well as to study perturbative and nonperturbative processes in quantum chromodynamics (QCD). Some observables are infrared and collinear safe and thus easily comp...

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Autor principal: Lesser, Ezra
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:http://cds.cern.ch/record/2810602
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author Lesser, Ezra
author_facet Lesser, Ezra
author_sort Lesser, Ezra
collection CERN
description Jet substructure observables have been used by experiments at the Large Hadron Collider (LHC) as instruments to search for new physics as well as to study perturbative and nonperturbative processes in quantum chromodynamics (QCD). Some observables are infrared and collinear safe and thus easily comparable to first-principles calculations, while others offer direct insight into specific physical phenomena such as the quark-gluon plasma formed in heavy-ion collisions. The high-precision capability of the ALICE tracking system allows a unique opportunity at LHC energies to measure tracks with low transverse momentum, permitting high precision access to the softer components inside jets with an excellent angular resolution. We present some recent charged-particle jet substructure measurements in pp collisions with ALICE, including the generalized jet angularities, the angular jet axes differences, and the direct observation of the dead-cone effect in QCD using the primary Lund Plane. These results provide new insights into the evolution of jets by comparing ALICE measurements to predictions from different event generators and perturbative QCD calculations.
id cern-2810602
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2022
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spelling cern-28106022023-01-31T10:58:26Zhttp://cds.cern.ch/record/2810602engLesser, EzraJet substructure in pp collisions with ALICEhep-exParticle Physics - ExperimentJet substructure observables have been used by experiments at the Large Hadron Collider (LHC) as instruments to search for new physics as well as to study perturbative and nonperturbative processes in quantum chromodynamics (QCD). Some observables are infrared and collinear safe and thus easily comparable to first-principles calculations, while others offer direct insight into specific physical phenomena such as the quark-gluon plasma formed in heavy-ion collisions. The high-precision capability of the ALICE tracking system allows a unique opportunity at LHC energies to measure tracks with low transverse momentum, permitting high precision access to the softer components inside jets with an excellent angular resolution. We present some recent charged-particle jet substructure measurements in pp collisions with ALICE, including the generalized jet angularities, the angular jet axes differences, and the direct observation of the dead-cone effect in QCD using the primary Lund Plane. These results provide new insights into the evolution of jets by comparing ALICE measurements to predictions from different event generators and perturbative QCD calculations.arXiv:2205.11583oai:cds.cern.ch:28106022022-05-23
spellingShingle hep-ex
Particle Physics - Experiment
Lesser, Ezra
Jet substructure in pp collisions with ALICE
title Jet substructure in pp collisions with ALICE
title_full Jet substructure in pp collisions with ALICE
title_fullStr Jet substructure in pp collisions with ALICE
title_full_unstemmed Jet substructure in pp collisions with ALICE
title_short Jet substructure in pp collisions with ALICE
title_sort jet substructure in pp collisions with alice
topic hep-ex
Particle Physics - Experiment
url http://cds.cern.ch/record/2810602
work_keys_str_mv AT lesserezra jetsubstructureinppcollisionswithalice