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

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/GA23-07499S" target="_blank" >GA23-07499S: Study of quark-gluon plasma with hard probes and limits of its formation</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Article name in the collection

Proceedings of Science

ISBN

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ISSN

1824-8039

e-ISSN

1824-8039

Number of pages

6

Pages from-to

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Publisher name

Sissa Medialab Srl

Place of publication

Trieste

Event location

Aschaffenburg

Event date

Mar 26, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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