Event-Shape-Dependent Analysis of Charm–Anticharm Azimuthal Correlations in Simulations

In high-energy collisions of small systems, by high-enough final-state multiplicities, a collective behaviour is present that is similar to the flow patterns observed in heavy-ion collisions. Recent studies connect this collectivity to semi-soft vacuum-QCD processes. Here we explore QCD production m...

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Main Authors: Anikó Horváth, Eszter Frajna, Róbert Vértesi
Format: Article
Language:English
Published: MDPI AG 2023-06-01
Series:Universe
Subjects:
Online Access:https://www.mdpi.com/2218-1997/9/7/308
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author Anikó Horváth
Eszter Frajna
Róbert Vértesi
author_facet Anikó Horváth
Eszter Frajna
Róbert Vértesi
author_sort Anikó Horváth
collection DOAJ
description In high-energy collisions of small systems, by high-enough final-state multiplicities, a collective behaviour is present that is similar to the flow patterns observed in heavy-ion collisions. Recent studies connect this collectivity to semi-soft vacuum-QCD processes. Here we explore QCD production mechanisms using angular correlations of heavy flavour using simulated proton-proton collisions at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msqrt><mi>s</mi></msqrt><mo>=</mo><mn>13</mn></mrow></semantics></math></inline-formula> TeV with the PYTHIA8 Monte Carlo event generator. We demonstrate that the event shape is strongly connected to the production mechanisms. Flattenicity, a novel event descriptor, can be used to separate events containing the final-state radiation from the rest of the events.
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spelling doaj.art-8d3c71e0db714df5833261baabdf4d842023-11-18T21:39:32ZengMDPI AGUniverse2218-19972023-06-019730810.3390/universe9070308Event-Shape-Dependent Analysis of Charm–Anticharm Azimuthal Correlations in SimulationsAnikó Horváth0Eszter Frajna1Róbert Vértesi2Wigner Research Centre for Physics, P.O. Box 49, H-1525 Budapest, HungaryWigner Research Centre for Physics, P.O. Box 49, H-1525 Budapest, HungaryWigner Research Centre for Physics, P.O. Box 49, H-1525 Budapest, HungaryIn high-energy collisions of small systems, by high-enough final-state multiplicities, a collective behaviour is present that is similar to the flow patterns observed in heavy-ion collisions. Recent studies connect this collectivity to semi-soft vacuum-QCD processes. Here we explore QCD production mechanisms using angular correlations of heavy flavour using simulated proton-proton collisions at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msqrt><mi>s</mi></msqrt><mo>=</mo><mn>13</mn></mrow></semantics></math></inline-formula> TeV with the PYTHIA8 Monte Carlo event generator. We demonstrate that the event shape is strongly connected to the production mechanisms. Flattenicity, a novel event descriptor, can be used to separate events containing the final-state radiation from the rest of the events.https://www.mdpi.com/2218-1997/9/7/308high-energy collisionsLHCmultiple parton interactions
spellingShingle Anikó Horváth
Eszter Frajna
Róbert Vértesi
Event-Shape-Dependent Analysis of Charm–Anticharm Azimuthal Correlations in Simulations
Universe
high-energy collisions
LHC
multiple parton interactions
title Event-Shape-Dependent Analysis of Charm–Anticharm Azimuthal Correlations in Simulations
title_full Event-Shape-Dependent Analysis of Charm–Anticharm Azimuthal Correlations in Simulations
title_fullStr Event-Shape-Dependent Analysis of Charm–Anticharm Azimuthal Correlations in Simulations
title_full_unstemmed Event-Shape-Dependent Analysis of Charm–Anticharm Azimuthal Correlations in Simulations
title_short Event-Shape-Dependent Analysis of Charm–Anticharm Azimuthal Correlations in Simulations
title_sort event shape dependent analysis of charm anticharm azimuthal correlations in simulations
topic high-energy collisions
LHC
multiple parton interactions
url https://www.mdpi.com/2218-1997/9/7/308
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