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Inclusive Hadron Yield Analysis in Small and Mid-Sized Collision Systems at Center-of-Mass Collision Energy of 200 GeV per Nucleon at STAR
Inclusive Hadron Yield Analysis in Small and Mid-Sized Collision Systems at Center-of-Mass Collision Energy of 200 GeV per Nucleon at STAR
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211150918
- ISBN
- 9798383565933
- DDC
- 530
- 저자명
- Liu, Tong.
- 서명/저자
- Inclusive Hadron Yield Analysis in Small and Mid-Sized Collision Systems at Center-of-Mass Collision Energy of 200 GeV per Nucleon at STAR
- 발행사항
- [Sl] : Yale University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 132 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
- 주기사항
- Advisor: Caines, Helen L.
- 학위논문주기
- Thesis (Ph.D.)--Yale University, 2024.
- 초록/해제
- 요약At extremely high temperature and energy density, the quarks and gluons that make up protons and neutrons become asymptotically deconfined and form a novel state of matter called the Quark-Gluon Plasma (QGP). This state of matter is experimentally created in relativistic heavy-ion collisions, where the high energy density carried by the incoming nuclei produce such a deconfined state. The QGP has been widely confirmed and studied in large collision systems like Au+Au and Pb+Pb, but whether the QGP exists in small systems like p+Au, and the dependence of QGP production on the collision system size are still open questions in the field. One way to study the QGP properties is by using proxies of high energy partons created in the initial stages of the collisions. Partons are colored quarks and gluons, and they fragment into color-neutral hadrons in the final state. These high momentum partons lose energy while traveling through the QGP, and the impact of these interactions can be reflected via the modified hadron yields. By contrasting hadron spectra in p+p to those in A+A we can determine the amount of modification from the medium which informs us about the QGP properties.In this thesis, I report studies on charged hadron yields in Ru+Ru, Zr+Zr and p+Au collisions at √sNN = 200 GeV with the STAR detector at RHIC, as functions of momentum and number of participating nucleons Npart. The yields are measured differentially in centrality/event activity, and their comparison with the p+p hadron yield, the nuclear modification factors, are reported. Enhancement in p+Au collision yields is reported, which is expected from initial state effects. In Ru+Ru/Zr+Zr, significant suppression is seen in central collisions. The suppression weakens gradually moving to more peripheral collisions, until a geometric bias from the centrality estimation complicates the interpretation. Using this bias, we can explore the limitations of the Glauber model on the peripheral end, which in this thesis we provide a direction to improve on going forward. The results are compared with measurements in other collisions systems at STAR, and a continuous picture of parton energy loss in the QGP environment as a function of system size is extracted, which is found to be highly correlated with Npart. Comparison with theoretical models are also made, and potential future measurements are discussed.
- 일반주제명
- Physics
- 일반주제명
- Nuclear physics
- 일반주제명
- Energy
- 일반주제명
- Quantum physics
- 일반주제명
- Particle physics
- 키워드
- Hard partons
- 키워드
- Jet energy loss
- 키워드
- Small systems
- 기타저자
- Yale University Physics
- 기본자료저록
- Dissertations Abstracts International. 86-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211150918
■006m o d
■007cr#unu||||||||
■020 ▼a9798383565933
■035 ▼a(MiAaPQ)AAI30817907
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aLiu, Tong.
■24510▼aInclusive Hadron Yield Analysis in Small and Mid-Sized Collision Systems at Center-of-Mass Collision Energy of 200 GeV per Nucleon at STAR
■260 ▼a[Sl]▼bYale University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a132 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-02, Section: B.
■500 ▼aAdvisor: Caines, Helen L.
■5021 ▼aThesis (Ph.D.)--Yale University, 2024.
■520 ▼aAt extremely high temperature and energy density, the quarks and gluons that make up protons and neutrons become asymptotically deconfined and form a novel state of matter called the Quark-Gluon Plasma (QGP). This state of matter is experimentally created in relativistic heavy-ion collisions, where the high energy density carried by the incoming nuclei produce such a deconfined state. The QGP has been widely confirmed and studied in large collision systems like Au+Au and Pb+Pb, but whether the QGP exists in small systems like p+Au, and the dependence of QGP production on the collision system size are still open questions in the field. One way to study the QGP properties is by using proxies of high energy partons created in the initial stages of the collisions. Partons are colored quarks and gluons, and they fragment into color-neutral hadrons in the final state. These high momentum partons lose energy while traveling through the QGP, and the impact of these interactions can be reflected via the modified hadron yields. By contrasting hadron spectra in p+p to those in A+A we can determine the amount of modification from the medium which informs us about the QGP properties.In this thesis, I report studies on charged hadron yields in Ru+Ru, Zr+Zr and p+Au collisions at √sNN = 200 GeV with the STAR detector at RHIC, as functions of momentum and number of participating nucleons Npart. The yields are measured differentially in centrality/event activity, and their comparison with the p+p hadron yield, the nuclear modification factors, are reported. Enhancement in p+Au collision yields is reported, which is expected from initial state effects. In Ru+Ru/Zr+Zr, significant suppression is seen in central collisions. The suppression weakens gradually moving to more peripheral collisions, until a geometric bias from the centrality estimation complicates the interpretation. Using this bias, we can explore the limitations of the Glauber model on the peripheral end, which in this thesis we provide a direction to improve on going forward. The results are compared with measurements in other collisions systems at STAR, and a continuous picture of parton energy loss in the QGP environment as a function of system size is extracted, which is found to be highly correlated with Npart. Comparison with theoretical models are also made, and potential future measurements are discussed.
■590 ▼aSchool code: 0265.
■650 4▼aPhysics
■650 4▼aNuclear physics
■650 4▼aEnergy
■650 4▼aQuantum physics
■650 4▼aParticle physics
■653 ▼aHard partons
■653 ▼aJet energy loss
■653 ▼aNuclear modification
■653 ▼aQuark-Gluon Plasma
■653 ▼aSmall systems
■690 ▼a0605
■690 ▼a0599
■690 ▼a0756
■690 ▼a0798
■690 ▼a0791
■71020▼aYale University▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g86-02B.
■790 ▼a0265
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160146▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
