Search for Long-lived Particles Decaying to Photon Pairs in Rare Higgs Boson Decays Using 13 TeV Proton-Proton Collisions at the Compact Muon Solenoid Detector
Search for Long-lived Particles Decaying to Photon Pairs in Rare Higgs Boson Decays Using 13 TeV Proton-Proton Collisions at the Compact Muon Solenoid Detector
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152825
- ISBN
- 9798384078739
- DDC
- 593.7
- 서명/저자
- Search for Long-lived Particles Decaying to Photon Pairs in Rare Higgs Boson Decays Using 13 TeV Proton-Proton Collisions at the Compact Muon Solenoid Detector
- 발행사항
- [Sl] : University of California, Los Angeles, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 189 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
- 주기사항
- Advisor: Bachtis, Michalis.
- 학위논문주기
- Thesis (Ph.D.Physics.)--University of California, Los Angeles, 2024.
- 초록/해제
- 요약This thesis describes the search for rare Standard Model (SM) Higgs boson decays to longlived scalar bosons (Φ) decaying to photon pairs using data collected by the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider. The data were collected from 2016, 2017, and 2018 proton-proton collisions at center-of-mass energy of √s = 13 TeV and correspond to an integrated luminosity of 138 fb−1 . Events are triggered using the leptonic decays of the Z boson produced in association with the SM Higgs boson. Although the CMS electromagnetic calorimeter has limited vertex reconstruction capabilities for photons, this analysis utilizes a novel reconstruction technique using kinematic constraints to calculate the displaced vertices of the diphotons. Signal is extracted using a counting-based maximumlikelihood approach in bins of the diphoton vertex Lxy and the invariant photon mass. Results are interpreted in terms of upper limits on branching ratios BR(H → ΦΦ) x BR(Φ → γ γ ) and in terms of the model-independent production cross section σ(Z + ΦΦ) x BR(Φ → γ γ ). No significant excess above SM expectation is observed.
- 일반주제명
- Particle physics
- 일반주제명
- Physics
- 일반주제명
- Quantum physics
- 키워드
- Axion
- 키워드
- Standard Model
- 키워드
- Higgs boson
- 키워드
- Photons
- 기타저자
- University of California, Los Angeles Physics 0666
- 기본자료저록
- Dissertations Abstracts International. 86-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■006m o d
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■020 ▼a9798384078739
■035 ▼a(MiAaPQ)AAI31559978
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a593.7
■1001 ▼aLam, Tyler Christopher.
■24510▼aSearch for Long-lived Particles Decaying to Photon Pairs in Rare Higgs Boson Decays Using 13 TeV Proton-Proton Collisions at the Compact Muon Solenoid Detector
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a189 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-03, Section: B.
■500 ▼aAdvisor: Bachtis, Michalis.
■5021 ▼aThesis (Ph.D.Physics.)--University of California, Los Angeles, 2024.
■520 ▼aThis thesis describes the search for rare Standard Model (SM) Higgs boson decays to longlived scalar bosons (Φ) decaying to photon pairs using data collected by the Compact Muon Solenoid (CMS) detector at the Large Hadron Collider. The data were collected from 2016, 2017, and 2018 proton-proton collisions at center-of-mass energy of √s = 13 TeV and correspond to an integrated luminosity of 138 fb−1 . Events are triggered using the leptonic decays of the Z boson produced in association with the SM Higgs boson. Although the CMS electromagnetic calorimeter has limited vertex reconstruction capabilities for photons, this analysis utilizes a novel reconstruction technique using kinematic constraints to calculate the displaced vertices of the diphotons. Signal is extracted using a counting-based maximumlikelihood approach in bins of the diphoton vertex Lxy and the invariant photon mass. Results are interpreted in terms of upper limits on branching ratios BR(H → ΦΦ) x BR(Φ → γ γ ) and in terms of the model-independent production cross section σ(Z + ΦΦ) x BR(Φ → γ γ ). No significant excess above SM expectation is observed.
■590 ▼aSchool code: 0031.
■650 4▼aParticle physics
■650 4▼aPhysics
■650 4▼aQuantum physics
■653 ▼aAxion
■653 ▼aStandard Model
■653 ▼aCompact Muon Solenoid
■653 ▼aHiggs boson
■653 ▼aLarge Hadron Collider
■653 ▼aPhotons
■690 ▼a0798
■690 ▼a0599
■690 ▼a0605
■71020▼aUniversity of California, Los Angeles▼bPhysics 0666.
■7730 ▼tDissertations Abstracts International▼g86-03B.
■790 ▼a0031
■791 ▼aPh.D.Physics.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164045▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
