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Study of ZZ+jets and Electroweak ZZ+2jets Production in Proton-Proton Collisions at √s = 13 TeV in Four-Lepton Events Using the CMS Detector at the LHC
Study of ZZ+jets and Electroweak ZZ+2jets Production in Proton-Proton Collisions at √s = 13 TeV in Four-Lepton Events Using the CMS Detector at the LHC
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105648
- ISBN
- 9798270242688
- DDC
- 593.7
- 저자명
- He, He.
- 서명/저자
- Study of ZZ+jets and Electroweak ZZ+2jets Production in Proton-Proton Collisions at √s = 13 TeV in Four-Lepton Events Using the CMS Detector at the LHC
- 발행사항
- [Sl] : The University of Wisconsin - Madison, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 195 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
- 주기사항
- Advisor: Herndon, Matthew.
- 학위논문주기
- Thesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
- 초록/해제
- 요약Two studies are presented on diboson production in association with jets in the fully leptonic final states, pp → (Z/γ∗)(Z/γ∗) + jets → 2ℓ2ℓ ' + jets, (ℓ, ℓ' = e or µ) in proton-proton collisions at a center-of-mass energy of 13 TeV. The data sample corresponds to an integrated luminosity of 138 fb−1 collected with the CMS detector at the LHC. In the first study, search is performed for the electroweak (EW) production of two Z bosons in association with two jets (EW ZZ+2jets) using a deep neural network (DNN) approach, and the production is measured with an observed (expected) significance of 4.4 (3.4) standard deviations. In the second study, differential distributions and normalized differential cross sections of diboson ZZ production associated with different numbers of jets (ZZ+jets) are measured as a function of jet multiplicity, transverse momentum pT, pseudorapidity η, invariant mass and ∆η of the highest-pT and second-highest-pT jets, and as a function of invariant mass of the four-lepton system for events with various jet multiplicities. These differential cross sections are compared with theoretical predictions that mostly agree with the experimental data. However, in a few regions we observe discrepancies between the predicted and measured values. Further improvement of the predictions is required to describe the ZZ+jets production in the whole phase space.
- 일반주제명
- Particle physics
- 일반주제명
- Physics
- 일반주제명
- Applied physics
- 일반주제명
- Theoretical physics
- 키워드
- Multi-boson
- 키워드
- Electroweak
- 기타저자
- The University of Wisconsin - Madison Physics
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
■007cr#unu||||||||
■020 ▼a9798270242688
■035 ▼a(MiAaPQ)AAI32401998
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a593.7
■1001 ▼aHe, He.
■24510▼aStudy of ZZ+jets and Electroweak ZZ+2jets Production in Proton-Proton Collisions at √s = 13 TeV in Four-Lepton Events Using the CMS Detector at the LHC
■260 ▼a[Sl]▼bThe University of Wisconsin - Madison▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a195 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-06, Section: B.
■500 ▼aAdvisor: Herndon, Matthew.
■5021 ▼aThesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
■520 ▼aTwo studies are presented on diboson production in association with jets in the fully leptonic final states, pp → (Z/γ∗)(Z/γ∗) + jets → 2ℓ2ℓ ' + jets, (ℓ, ℓ' = e or µ) in proton-proton collisions at a center-of-mass energy of 13 TeV. The data sample corresponds to an integrated luminosity of 138 fb−1 collected with the CMS detector at the LHC. In the first study, search is performed for the electroweak (EW) production of two Z bosons in association with two jets (EW ZZ+2jets) using a deep neural network (DNN) approach, and the production is measured with an observed (expected) significance of 4.4 (3.4) standard deviations. In the second study, differential distributions and normalized differential cross sections of diboson ZZ production associated with different numbers of jets (ZZ+jets) are measured as a function of jet multiplicity, transverse momentum pT, pseudorapidity η, invariant mass and ∆η of the highest-pT and second-highest-pT jets, and as a function of invariant mass of the four-lepton system for events with various jet multiplicities. These differential cross sections are compared with theoretical predictions that mostly agree with the experimental data. However, in a few regions we observe discrepancies between the predicted and measured values. Further improvement of the predictions is required to describe the ZZ+jets production in the whole phase space.
■590 ▼aSchool code: 0262.
■650 4▼aParticle physics
■650 4▼aPhysics
■650 4▼aApplied physics
■650 4▼aTheoretical physics
■653 ▼aDifferential cross section
■653 ▼aDeep neural network
■653 ▼aMulti-boson
■653 ▼aVector boson scattering
■653 ▼aElectroweak
■690 ▼a0798
■690 ▼a0605
■690 ▼a0753
■690 ▼a0215
■71020▼aThe University of Wisconsin - Madison▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g87-06B.
■790 ▼a0262
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360990▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
