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Characterization of Photonuclear Collisions and the Search for Quark-Gluon Plasma
Characterization of Photonuclear Collisions and the Search for Quark-Gluon Plasma
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211151143
- ISBN
- 9798382716657
- DDC
- 530
- 서명/저자
- Characterization of Photonuclear Collisions and the Search for Quark-Gluon Plasma
- 발행사항
- [Sl] : University of Colorado at Boulder, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 279 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-11, Section: B.
- 주기사항
- Advisor: Nagle, Jamie.
- 학위논문주기
- Thesis (Ph.D.)--University of Colorado at Boulder, 2024.
- 초록/해제
- 요약Ultra-relativistic heavy-ion collisions create tiny droplets of Quark-Gluon Plasma (QGP), a hot, dense state of matter where quarks and gluon are in a deconfined state. Experiments at the CERN Large Hadron Collider have observed the presence of this strongly interacting matter in Pb+Pb collisions and, interestingly, in small collision systems like p + Pb and pp. This raised many important questions in the field, particularly: What is the smallest system that is necessary to create a tiny droplet of QGP? Photonuclear collisions, a subset of Ultra Peripheral Collisions (UPCs), are one such exotic small system and occur when the electromagnetic field of one nucleus acts as a photon and breaks apart the other nucleus. The ATLAS Collaboration has recently observed flow-like features, a QGP signature suggesting the collective expansion of the fluid in photonuclear collisions. Thus, it is imperative to check these events for other potential QGP signatures, including radial flow, strangeness enhancement, and enhanced production of baryons relative to mesons. Furthermore, modeling photonuclear collisions is particularly challenging due to their extremely asymmetric nature and the fluctuating photon energies between events.This dissertation presents two new measurements of photonuclear collisions using 5.02 TeV Pb+Pb data collected in 2018 by ATLAS, with a dedicated photo-nuclear event trigger. The first measurement reports unidentified-charged-hadron yields, and the second measurement provides the identified-hadron yields, such as K0S , Λ, and Ξ−, in Pb+Pb UPCs. The yields are shown as a function of pseudorapidity and transverse momentum in different categories of event multiplicity. The results are compared with 5.02 TeV p+Pb data collected in 2016 by ATLAS at the same event multiplicities. Additionally, they are compared with calculations by the DPMJET Monte Carlo model and hydrodynamic-based models. These comparisons enable detailed characterizations of photonuclear collision properties and evaluate the potential formation of small QGP droplets.
- 일반주제명
- Physics
- 일반주제명
- Nuclear physics
- 일반주제명
- Plasma physics
- 일반주제명
- Atomic physics
- 키워드
- Pseudorapidity
- 기타저자
- University of Colorado at Boulder Physics
- 기본자료저록
- Dissertations Abstracts International. 85-11B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■007cr#unu||||||||
■020 ▼a9798382716657
■035 ▼a(MiAaPQ)AAI31234729
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530
■1001 ▼aDas, Sruthy Jyothi.▼0(orcid)0000-0003-2693-3389
■24510▼aCharacterization of Photonuclear Collisions and the Search for Quark-Gluon Plasma
■260 ▼a[Sl]▼bUniversity of Colorado at Boulder▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a279 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-11, Section: B.
■500 ▼aAdvisor: Nagle, Jamie.
■5021 ▼aThesis (Ph.D.)--University of Colorado at Boulder, 2024.
■520 ▼aUltra-relativistic heavy-ion collisions create tiny droplets of Quark-Gluon Plasma (QGP), a hot, dense state of matter where quarks and gluon are in a deconfined state. Experiments at the CERN Large Hadron Collider have observed the presence of this strongly interacting matter in Pb+Pb collisions and, interestingly, in small collision systems like p + Pb and pp. This raised many important questions in the field, particularly: What is the smallest system that is necessary to create a tiny droplet of QGP? Photonuclear collisions, a subset of Ultra Peripheral Collisions (UPCs), are one such exotic small system and occur when the electromagnetic field of one nucleus acts as a photon and breaks apart the other nucleus. The ATLAS Collaboration has recently observed flow-like features, a QGP signature suggesting the collective expansion of the fluid in photonuclear collisions. Thus, it is imperative to check these events for other potential QGP signatures, including radial flow, strangeness enhancement, and enhanced production of baryons relative to mesons. Furthermore, modeling photonuclear collisions is particularly challenging due to their extremely asymmetric nature and the fluctuating photon energies between events.This dissertation presents two new measurements of photonuclear collisions using 5.02 TeV Pb+Pb data collected in 2018 by ATLAS, with a dedicated photo-nuclear event trigger. The first measurement reports unidentified-charged-hadron yields, and the second measurement provides the identified-hadron yields, such as K0S , Λ, and Ξ−, in Pb+Pb UPCs. The yields are shown as a function of pseudorapidity and transverse momentum in different categories of event multiplicity. The results are compared with 5.02 TeV p+Pb data collected in 2016 by ATLAS at the same event multiplicities. Additionally, they are compared with calculations by the DPMJET Monte Carlo model and hydrodynamic-based models. These comparisons enable detailed characterizations of photonuclear collision properties and evaluate the potential formation of small QGP droplets.
■590 ▼aSchool code: 0051.
■650 4▼aPhysics
■650 4▼aNuclear physics
■650 4▼aPlasma physics
■650 4▼aAtomic physics
■653 ▼aPhotonuclear collisions
■653 ▼aQuark-Gluon Plasma
■653 ▼aUltra Peripheral Collisions
■653 ▼aPseudorapidity
■653 ▼aPhoto-nuclear event trigger
■690 ▼a0605
■690 ▼a0756
■690 ▼a0748
■690 ▼a0759
■71020▼aUniversity of Colorado at Boulder▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g85-11B.
■790 ▼a0051
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160973▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
