Systematic exploration of multi-scale jet substructure in p + p collisions atroot s = 200 GeV by the STAR experiment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00382149" target="_blank" >RIV/68407700:21340/24:00382149 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Systematic exploration of multi-scale jet substructure in p + p collisions atroot s = 200 GeV by the STAR experiment

Popis výsledku v původním jazyce

Jets are multi-scale objects that connect asymptotically free partons to confined hadrons. Jet substructure measurements in vacuum provide essential insight into the parton evolution and the ensuing non-perturbative processes. In this study, we use the SoftDrop grooming technique, based on the angular-ordered Cambridge/Aachen reclustering algorithm, to probe correlations between jet substructure variables. This technique provides a correspondence between experimental observables and QCD splitting functions in vacuum. Corrections for detector effects are carried out utilizing either a three dimensional correction procedure or a machine learning based framework called MultiFold, with the latter retaining the correlations across more jet substructure observables, in an unbinned way. In these proceedings, we explore ensemble-level and jet-by-jet correlations between variables such as the shared momentum faction (zg), splitting scale (kT), groomed mass fraction (μ), jet charge (Q) and groomed jet radius (Rg) for jets of varying momenta and radii in p+p collisions at root s = 200 GeV using the STAR detector. To study the evolution along the jet shower, we present splitting observables at the first, second, and third hard splits in the SoftDrop splitting history for various jet and initiator prong momenta. Finally, the measurements are compared to leading order Monte Carlo models, PYTHIA 6, PYTHIA 8 and HERWIG.

Název v anglickém jazyce

Systematic exploration of multi-scale jet substructure in p + p collisions atroot s = 200 GeV by the STAR experiment

Popis výsledku anglicky

Jets are multi-scale objects that connect asymptotically free partons to confined hadrons. Jet substructure measurements in vacuum provide essential insight into the parton evolution and the ensuing non-perturbative processes. In this study, we use the SoftDrop grooming technique, based on the angular-ordered Cambridge/Aachen reclustering algorithm, to probe correlations between jet substructure variables. This technique provides a correspondence between experimental observables and QCD splitting functions in vacuum. Corrections for detector effects are carried out utilizing either a three dimensional correction procedure or a machine learning based framework called MultiFold, with the latter retaining the correlations across more jet substructure observables, in an unbinned way. In these proceedings, we explore ensemble-level and jet-by-jet correlations between variables such as the shared momentum faction (zg), splitting scale (kT), groomed mass fraction (μ), jet charge (Q) and groomed jet radius (Rg) for jets of varying momenta and radii in p+p collisions at root s = 200 GeV using the STAR detector. To study the evolution along the jet shower, we present splitting observables at the first, second, and third hard splits in the SoftDrop splitting history for various jet and initiator prong momenta. Finally, the measurements are compared to leading order Monte Carlo models, PYTHIA 6, PYTHIA 8 and HERWIG.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/GA23-07499S" target="_blank" >GA23-07499S: Studium kvark-gluonového plazmatu pomocí tvrdých sond a podmínek jeho vzniku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of Science

ISBN

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ISSN

1824-8039

e-ISSN

1824-8039

Počet stran výsledku

6

Strana od-do

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Název nakladatele

Sissa Medialab Srl

Místo vydání

Trieste

Místo konání akce

Aschaffenburg

Datum konání akce

26. 3. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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