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Jet substructure measurements in Pb-Pb collisions at 5.02 TeV with ALICE

<!--HTML-->We report new jet substructure measurements in Pb-Pb and pp collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ALICE detector. For the first time, fully corrected measurements of the groomed jet momentum fraction, $z_g$, the groomed jet radius, $\theta_g \equiv R_g/R$, and the...

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Autor principal: Mulligan, James
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:http://cds.cern.ch/record/2721687
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author Mulligan, James
author_facet Mulligan, James
author_sort Mulligan, James
collection CERN
description <!--HTML-->We report new jet substructure measurements in Pb-Pb and pp collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ALICE detector. For the first time, fully corrected measurements of the groomed jet momentum fraction, $z_g$, the groomed jet radius, $\theta_g \equiv R_g/R$, and the number of Soft Drop splittings, $n_{\mathrm{SD}}$, will be shown in Pb-Pb collisions, along with their ratio to those in pp collisions. We present results with the Soft Drop grooming method for multiple grooming settings, as well as with the Dynamical grooming method. By using stronger grooming conditions and improved background subtraction techniques, these results are fully corrected and can be directly compared to theoretical models of jet quenching - avoiding the large background contamination present in previously reported observables. Additional jet substructure measurements will be shown and compared to recent theoretical predictions, featuring the Lund plane map of radiation phase space and its projections onto distributions of the splitting scale $k_T$, and the angular distribution between the groomed and ungroomed jet axis.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
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spelling cern-27216872022-11-02T22:22:24Zhttp://cds.cern.ch/record/2721687engMulligan, JamesJet substructure measurements in Pb-Pb collisions at 5.02 TeV with ALICE10th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear CollisionsConferences<!--HTML-->We report new jet substructure measurements in Pb-Pb and pp collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ALICE detector. For the first time, fully corrected measurements of the groomed jet momentum fraction, $z_g$, the groomed jet radius, $\theta_g \equiv R_g/R$, and the number of Soft Drop splittings, $n_{\mathrm{SD}}$, will be shown in Pb-Pb collisions, along with their ratio to those in pp collisions. We present results with the Soft Drop grooming method for multiple grooming settings, as well as with the Dynamical grooming method. By using stronger grooming conditions and improved background subtraction techniques, these results are fully corrected and can be directly compared to theoretical models of jet quenching - avoiding the large background contamination present in previously reported observables. Additional jet substructure measurements will be shown and compared to recent theoretical predictions, featuring the Lund plane map of radiation phase space and its projections onto distributions of the splitting scale $k_T$, and the angular distribution between the groomed and ungroomed jet axis.oai:cds.cern.ch:27216872020
spellingShingle Conferences
Mulligan, James
Jet substructure measurements in Pb-Pb collisions at 5.02 TeV with ALICE
title Jet substructure measurements in Pb-Pb collisions at 5.02 TeV with ALICE
title_full Jet substructure measurements in Pb-Pb collisions at 5.02 TeV with ALICE
title_fullStr Jet substructure measurements in Pb-Pb collisions at 5.02 TeV with ALICE
title_full_unstemmed Jet substructure measurements in Pb-Pb collisions at 5.02 TeV with ALICE
title_short Jet substructure measurements in Pb-Pb collisions at 5.02 TeV with ALICE
title_sort jet substructure measurements in pb-pb collisions at 5.02 tev with alice
topic Conferences
url http://cds.cern.ch/record/2721687
work_keys_str_mv AT mulliganjames jetsubstructuremeasurementsinpbpbcollisionsat502tevwithalice
AT mulliganjames 10thinternationalconferenceonhardandelectromagneticprobesofhighenergynuclearcollisions