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Search for µ+ → e+γ in the MEG II Experiment's First Physics Dataset and Analysis of the MEG II Drift Chamber Data- [electronic resource]
Search for µ+ → e+γ in the MEG II Experiment's First Physics Dataset and Analysis of the MEG II Drift Chamber Data- [electronic resource]
상세정보
- 자료유형
- 학위논문파일 국외
- 최종처리일시
- 20240214101917
- ISBN
- 9798380859646
- DDC
- 593.7
- 저자명
- Palo, Dylan.
- 서명/저자
- Search for µ+ → e+γ in the MEG II Experiments First Physics Dataset and Analysis of the MEG II Drift Chamber Data - [electronic resource]
- 발행사항
- [S.l.]: : University of California, Irvine., 2023
- 발행사항
- Ann Arbor : : ProQuest Dissertations & Theses,, 2023
- 형태사항
- 1 online resource(313 p.)
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
- 주기사항
- Advisor: Molzon, William.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Irvine, 2023.
- 사용제한주기
- This item must not be sold to any third party vendors.
- 초록/해제
- 요약The MEG II experiment is an active search for the decay of a muon resulting in a positron-photon pair. The experiment plans to reach a sensitivity of 6*10-14, improving on the limit of the MEG I experiment by an order of magnitude. The MEG II detector analysis was written by the MEG II collaboration; this thesis details the detector analysis focusing on portions of the analysis I contributed to including the positron analysis and target analysis. These chapters also serve as a thorough description of the analysis for current and future collaborators. The thesis ends with a description of two physics analyses performed on the MEG II experiment's first year of physics data and demonstrates the experiment's expected performance over its lifetime.Chapter 1 is an introduction to the Standard Model of particle physics. Charged lepton flavor violation (CLFV) processes, including the process of a muon decay resulting in a positron-photon pair are realized in the Standard Model, but occur at an extremely small, undetectable, rate (branching fraction of 10-54). A variety of theoretical models beyond the Standard Model allow for CLFV (and thus the decay of a muon resulting in a positron-photon pair) at a potentially observable rate (branching fraction of 10-14). CLFV has not been observed despite extensive searches for over 50 years. It's observation would have dramatic implications on the field of particle physics. Chapter 2 discusses past and future experimental searches in the field of CLFV. Chapter 3 describes the MEG II experimental technique, including the signal/background, detectors, electronics, trigger, etc.The remaining chapters discuss MEG II analysis. One of the most critical points of the experiment is the background rejection, which is required to achieve the optimal experimental sensitivity. This background rejection is achieved via precise kinematic measurements of the positron and the photon at the stopping target. The precision of these kinematic measurements is common theme that will be discussed throughout this thesis. In Chapter 4, a novel technique used to monitor the MEG II stopping target using a camera is described along with its results. Chapter 5 presents the reconstruction of positrons in the MEG II drift chamber. The relative alignment of the MEG sub-detectors and their calibrations are discussed in Chapters 6 and 7 respectively. Chapter 8 describes the details of the physics analysis of the 2021 dataset. Conclusions are described in Chapter 9.
- 일반주제명
- Particle physics.
- 일반주제명
- Physics.
- 키워드
- Detector
- 키워드
- Drift chamber
- 키워드
- Machine learning
- 키워드
- Muon
- 기타저자
- University of California, Irvine Physics
- 기본자료저록
- Dissertations Abstracts International. 85-05B.
- 기본자료저록
- Dissertation Abstract International
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008240612s2023 us |||||||||||||||c||eng d■001000016935310
■00520240214101917
■006m o d
■007cr#unu||||||||
■020 ▼a9798380859646
■035 ▼a(MiAaPQ)AAI30688534
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a593.7
■1001 ▼aPalo, Dylan.
■24510▼aSearch for µ+ → e+γ in the MEG II Experiment's First Physics Dataset and Analysis of the MEG II Drift Chamber Data▼h[electronic resource]
■260 ▼a[S.l.]:▼bUniversity of California, Irvine. ▼c2023
■260 1▼aAnn Arbor :▼bProQuest Dissertations & Theses, ▼c2023
■300 ▼a1 online resource(313 p.)
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-05, Section: B.
■500 ▼aAdvisor: Molzon, William.
■5021 ▼aThesis (Ph.D.)--University of California, Irvine, 2023.
■506 ▼aThis item must not be sold to any third party vendors.
■520 ▼aThe MEG II experiment is an active search for the decay of a muon resulting in a positron-photon pair. The experiment plans to reach a sensitivity of 6*10-14, improving on the limit of the MEG I experiment by an order of magnitude. The MEG II detector analysis was written by the MEG II collaboration; this thesis details the detector analysis focusing on portions of the analysis I contributed to including the positron analysis and target analysis. These chapters also serve as a thorough description of the analysis for current and future collaborators. The thesis ends with a description of two physics analyses performed on the MEG II experiment's first year of physics data and demonstrates the experiment's expected performance over its lifetime.Chapter 1 is an introduction to the Standard Model of particle physics. Charged lepton flavor violation (CLFV) processes, including the process of a muon decay resulting in a positron-photon pair are realized in the Standard Model, but occur at an extremely small, undetectable, rate (branching fraction of 10-54). A variety of theoretical models beyond the Standard Model allow for CLFV (and thus the decay of a muon resulting in a positron-photon pair) at a potentially observable rate (branching fraction of 10-14). CLFV has not been observed despite extensive searches for over 50 years. It's observation would have dramatic implications on the field of particle physics. Chapter 2 discusses past and future experimental searches in the field of CLFV. Chapter 3 describes the MEG II experimental technique, including the signal/background, detectors, electronics, trigger, etc.The remaining chapters discuss MEG II analysis. One of the most critical points of the experiment is the background rejection, which is required to achieve the optimal experimental sensitivity. This background rejection is achieved via precise kinematic measurements of the positron and the photon at the stopping target. The precision of these kinematic measurements is common theme that will be discussed throughout this thesis. In Chapter 4, a novel technique used to monitor the MEG II stopping target using a camera is described along with its results. Chapter 5 presents the reconstruction of positrons in the MEG II drift chamber. The relative alignment of the MEG sub-detectors and their calibrations are discussed in Chapters 6 and 7 respectively. Chapter 8 describes the details of the physics analysis of the 2021 dataset. Conclusions are described in Chapter 9.
■590 ▼aSchool code: 0030.
■650 4▼aParticle physics.
■650 4▼aPhysics.
■653 ▼aCharged lepton flavor violation
■653 ▼aDetector
■653 ▼aDrift chamber
■653 ▼aMachine learning
■653 ▼aMuon
■653 ▼aMEG II experiment
■690 ▼a0798
■690 ▼a0800
■690 ▼a0605
■71020▼aUniversity of California, Irvine▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g85-05B.
■773 ▼tDissertation Abstract International
■790 ▼a0030
■791 ▼aPh.D.
■792 ▼a2023
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16935310▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
■980 ▼a202402▼f2024
