Study of the medium effects in jet observables in relativistic heavy-ion collisions

Detalhes bibliográficos
Autor(a) principal: Paulino, Maria Monalisa de Melo
Data de Publicação: 2023
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Biblioteca Digital de Teses e Dissertações da USP
Texto Completo: https://www.teses.usp.br/teses/disponiveis/43/43134/tde-22032024-172237/
Resumo: This work aims to study phenomenologically the influence of the medium formed in collisions between heavy ions on the propagation of jets originating from the fragmentation of partons. The project implements a model of partonic propagation a non-homogeneous and hydrodynamically expanding medium using the Monte Carlo event generators JEWEL (Jet Evolution With Energy Loss), m T$_R$ENTo for initial medium conditions, and the (2+1)D v-USPhydro for the event-by-event evolution of a realistic medium. The group has previously combined these models, enabling the study of a new series of observables related to jets generated by heavy quarks beyond $R_$, such as di-jet ($x_J$), jet mass ($M_$) and semi-inclusive hadron-jet. These observables have been the subject of numerous experimental measurements, but there is a scarcity of models that seek to describe their behavior. All observables are presented for central and peripheral PbPb collisions at $2.76$~TeV and $5.02$~TeV, following the experimental setups of the LHC Run-2, for anti-k$_T$ jets with varying radius R from $0.2$ to $1.0$. The simulated nuclear modification factor $R_$ and jet mass $M_$ satisfactorily reproduce experimental results for both central and peripheral collisions when using the combination of models without thermal background subtraction. On the other hand, the semi-inclusive hadron-jet (h-jet) and the di-jet $x_J$ observables have demonstrated their indifference to changes in the surrounding medium. The results with respect to centrality and the value of R suggest the opportunity to gain a deeper understanding of the medium response using JEWEL with thermal subtraction.
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spelling Study of the medium effects in jet observables in relativistic heavy-ion collisionsEstudo de efeitos do meio sobre observáveis de jatos em colisões entre íons-pesados relativísticosCromodinâmica Quântica.Física de Altas EnergiasHeavy-IonHidrodinâmicaHigh Energy PhysicsHydrodynamics.Íons PesadosPlasma de Quarks e GlúonsThis work aims to study phenomenologically the influence of the medium formed in collisions between heavy ions on the propagation of jets originating from the fragmentation of partons. The project implements a model of partonic propagation a non-homogeneous and hydrodynamically expanding medium using the Monte Carlo event generators JEWEL (Jet Evolution With Energy Loss), m T$_R$ENTo for initial medium conditions, and the (2+1)D v-USPhydro for the event-by-event evolution of a realistic medium. The group has previously combined these models, enabling the study of a new series of observables related to jets generated by heavy quarks beyond $R_$, such as di-jet ($x_J$), jet mass ($M_$) and semi-inclusive hadron-jet. These observables have been the subject of numerous experimental measurements, but there is a scarcity of models that seek to describe their behavior. All observables are presented for central and peripheral PbPb collisions at $2.76$~TeV and $5.02$~TeV, following the experimental setups of the LHC Run-2, for anti-k$_T$ jets with varying radius R from $0.2$ to $1.0$. The simulated nuclear modification factor $R_$ and jet mass $M_$ satisfactorily reproduce experimental results for both central and peripheral collisions when using the combination of models without thermal background subtraction. On the other hand, the semi-inclusive hadron-jet (h-jet) and the di-jet $x_J$ observables have demonstrated their indifference to changes in the surrounding medium. The results with respect to centrality and the value of R suggest the opportunity to gain a deeper understanding of the medium response using JEWEL with thermal subtraction.Este trabalho tem como objetivo estudar fenomenologicamente a influência do meio formado em colisões entre íons pesados na propagação de jatos originados a partir da fragmentação de pártons. O projeto implementa em um modelo de propagação partônica em um meio não homogêneo e em expansão hidrodinâmica por meio dos geradores de eventos Monte Carlo JEWEL (Jet Evolution With Energy Loss), m T$_R$ENTo para condições iniciais do meio e o (2+1)D v-USPhydro para a evolução do meio realista evento a evento. O grupo já realizou anteriormente uma combinação desses modelos, o que permitirá o estudo de uma nova série de observáveis correspondentes a jatos gerados por quarks pesados além do $R_{AA}$, como o di-jet ($x_J$), o jet mass ($M_{jet}$) e o semi-inclusivo hadron-jato (h-jet). Esses observáveis têm sido objeto de inúmeras medidas experimentais, porém, há escassez de modelos que busquem descrever o comportamento desses observáveis. Todos observáveis são apresentados para colisões centrais e periféricas de PbPb a $2.76$~TeV e a $5.02$~TeV, seguindo as configurações experimentais da Run-2 do LHC, para jatos anti-k$_T$ com raios R variando de $0.2$ a $1.0$. Os observáveis fator de modificação nuclear $R_{AA}$ e jet mass $M_{jet}$ simulados reproduzem satisfatoriamente os resultados experimentais para colisões centrais e periféricas ao utilizar a combinação de modelos sem subtração térmica de background. Enquanto que o semi-inclusivo hadron-jato h-jet e o observável di-jet $x_J$ mostraram-se indiferente à alterações de meio. Os resultados com relação à centralidade e ao valor de R sugere a oportunidade de obter uma compreensão mais aprofundada da resposta do meio utilizando o JEWEL com subtração térmica.Biblioteca Digitais de Teses e Dissertações da USPMunhoz, Marcelo GameiroPaulino, Maria Monalisa de Melo2023-10-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttps://www.teses.usp.br/teses/disponiveis/43/43134/tde-22032024-172237/reponame:Biblioteca Digital de Teses e Dissertações da USPinstname:Universidade de São Paulo (USP)instacron:USPLiberar o conteúdo para acesso público.info:eu-repo/semantics/openAccesseng2024-04-11T16:47:02Zoai:teses.usp.br:tde-22032024-172237Biblioteca Digital de Teses e Dissertaçõeshttp://www.teses.usp.br/PUBhttp://www.teses.usp.br/cgi-bin/mtd2br.plvirginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.bropendoar:27212024-04-11T16:47:02Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Study of the medium effects in jet observables in relativistic heavy-ion collisions
Estudo de efeitos do meio sobre observáveis de jatos em colisões entre íons-pesados relativísticos
title Study of the medium effects in jet observables in relativistic heavy-ion collisions
spellingShingle Study of the medium effects in jet observables in relativistic heavy-ion collisions
Paulino, Maria Monalisa de Melo
Cromodinâmica Quântica.
Física de Altas Energias
Heavy-Ion
Hidrodinâmica
High Energy Physics
Hydrodynamics.
Íons Pesados
Plasma de Quarks e Glúons
title_short Study of the medium effects in jet observables in relativistic heavy-ion collisions
title_full Study of the medium effects in jet observables in relativistic heavy-ion collisions
title_fullStr Study of the medium effects in jet observables in relativistic heavy-ion collisions
title_full_unstemmed Study of the medium effects in jet observables in relativistic heavy-ion collisions
title_sort Study of the medium effects in jet observables in relativistic heavy-ion collisions
author Paulino, Maria Monalisa de Melo
author_facet Paulino, Maria Monalisa de Melo
author_role author
dc.contributor.none.fl_str_mv Munhoz, Marcelo Gameiro
dc.contributor.author.fl_str_mv Paulino, Maria Monalisa de Melo
dc.subject.por.fl_str_mv Cromodinâmica Quântica.
Física de Altas Energias
Heavy-Ion
Hidrodinâmica
High Energy Physics
Hydrodynamics.
Íons Pesados
Plasma de Quarks e Glúons
topic Cromodinâmica Quântica.
Física de Altas Energias
Heavy-Ion
Hidrodinâmica
High Energy Physics
Hydrodynamics.
Íons Pesados
Plasma de Quarks e Glúons
description This work aims to study phenomenologically the influence of the medium formed in collisions between heavy ions on the propagation of jets originating from the fragmentation of partons. The project implements a model of partonic propagation a non-homogeneous and hydrodynamically expanding medium using the Monte Carlo event generators JEWEL (Jet Evolution With Energy Loss), m T$_R$ENTo for initial medium conditions, and the (2+1)D v-USPhydro for the event-by-event evolution of a realistic medium. The group has previously combined these models, enabling the study of a new series of observables related to jets generated by heavy quarks beyond $R_$, such as di-jet ($x_J$), jet mass ($M_$) and semi-inclusive hadron-jet. These observables have been the subject of numerous experimental measurements, but there is a scarcity of models that seek to describe their behavior. All observables are presented for central and peripheral PbPb collisions at $2.76$~TeV and $5.02$~TeV, following the experimental setups of the LHC Run-2, for anti-k$_T$ jets with varying radius R from $0.2$ to $1.0$. The simulated nuclear modification factor $R_$ and jet mass $M_$ satisfactorily reproduce experimental results for both central and peripheral collisions when using the combination of models without thermal background subtraction. On the other hand, the semi-inclusive hadron-jet (h-jet) and the di-jet $x_J$ observables have demonstrated their indifference to changes in the surrounding medium. The results with respect to centrality and the value of R suggest the opportunity to gain a deeper understanding of the medium response using JEWEL with thermal subtraction.
publishDate 2023
dc.date.none.fl_str_mv 2023-10-19
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.teses.usp.br/teses/disponiveis/43/43134/tde-22032024-172237/
url https://www.teses.usp.br/teses/disponiveis/43/43134/tde-22032024-172237/
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv
dc.rights.driver.fl_str_mv Liberar o conteúdo para acesso público.
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Liberar o conteúdo para acesso público.
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv
dc.publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
publisher.none.fl_str_mv Biblioteca Digitais de Teses e Dissertações da USP
dc.source.none.fl_str_mv
reponame:Biblioteca Digital de Teses e Dissertações da USP
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Biblioteca Digital de Teses e Dissertações da USP
collection Biblioteca Digital de Teses e Dissertações da USP
repository.name.fl_str_mv Biblioteca Digital de Teses e Dissertações da USP - Universidade de São Paulo (USP)
repository.mail.fl_str_mv virginia@if.usp.br|| atendimento@aguia.usp.br||virginia@if.usp.br
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