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Precision Measurement of the Branching Fraction of ψ(2S)→μ+ μ-
Precision Measurement of the Branching Fraction of ψ(2S)→μ+ μ-
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103002
- ISBN
- 9798314899403
- DDC
- 593.7
- 저자명
- Hassani, Abbas.
- 서명/저자
- Precision Measurement of the Branching Fraction of ψ(2S)→μ+ μ-
- 발행사항
- [Sl] : University of Colorado at Boulder, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 164 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
- 주기사항
- Advisor: Cumalat, John.
- 학위논문주기
- Thesis (Ph.D.)--University of Colorado at Boulder, 2025.
- 초록/해제
- 요약This thesis presents a precision measurement of the branching fraction (B) of the decay ψ(2S)→µ+ µ-, using the BParking dataset collected during 2018 data-taking period by the CMS experiment at the Large Hadron Collider. The measurement is conducted relative to the well-known branching fractions of the decays J/ψ→µ+ µ- and ψ(2S)→π+ π- J/ψ, J/ψ→µ+ µ-. The resulting branching fractions are determined to be (7.80±0.33)x10-3 and (8.00±0.41)x10-3 relative to these decay channels, respectively.This analysis relies on three decay channels: B±→K± J/ψ→µ+ µ-, B±→K± ψ(2S)→µ+ µ-, and B±→K± ψ(2S), ψ(2S)→π+ π- J/ψ, J/ψ→µ+ µ-. Monte Carlo (MC) simulations are employed to compute the detection efficiencies, using dedicated private datasets for each channel. Contributions from misidentified pions are evaluated through specialized MC samples. The mass distributions of these events are modeled to quantify their impact on the measured signal. The resulting B(ψ(2S)→µ+ µ-), relative to each decay channel, is found to be consistent with the current world-average value, offering a refined measurement with reduced uncertainties.
- 일반주제명
- Particle physics
- 일반주제명
- Applied mathematics
- 키워드
- Detection
- 키워드
- Dataset
- 키워드
- Measured signal
- 기타저자
- University of Colorado at Boulder Physics
- 기본자료저록
- Dissertations Abstracts International. 86-11B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202103002
■006m o d
■007cr#unu||||||||
■020 ▼a9798314899403
■035 ▼a(MiAaPQ)AAI31840157
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a593.7
■1001 ▼aHassani, Abbas.▼0(orcid)0009-0008-4322-7682
■24510▼aPrecision Measurement of the Branching Fraction of ψ(2S)→μ+ μ-
■260 ▼a[Sl]▼bUniversity of Colorado at Boulder▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a164 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-11, Section: B.
■500 ▼aAdvisor: Cumalat, John.
■5021 ▼aThesis (Ph.D.)--University of Colorado at Boulder, 2025.
■520 ▼aThis thesis presents a precision measurement of the branching fraction (B) of the decay ψ(2S)→µ+ µ-, using the BParking dataset collected during 2018 data-taking period by the CMS experiment at the Large Hadron Collider. The measurement is conducted relative to the well-known branching fractions of the decays J/ψ→µ+ µ- and ψ(2S)→π+ π- J/ψ, J/ψ→µ+ µ-. The resulting branching fractions are determined to be (7.80±0.33)x10-3 and (8.00±0.41)x10-3 relative to these decay channels, respectively.This analysis relies on three decay channels: B±→K± J/ψ→µ+ µ-, B±→K± ψ(2S)→µ+ µ-, and B±→K± ψ(2S), ψ(2S)→π+ π- J/ψ, J/ψ→µ+ µ-. Monte Carlo (MC) simulations are employed to compute the detection efficiencies, using dedicated private datasets for each channel. Contributions from misidentified pions are evaluated through specialized MC samples. The mass distributions of these events are modeled to quantify their impact on the measured signal. The resulting B(ψ(2S)→µ+ µ-), relative to each decay channel, is found to be consistent with the current world-average value, offering a refined measurement with reduced uncertainties.
■590 ▼aSchool code: 0051.
■650 4▼aParticle physics
■650 4▼aApplied mathematics
■653 ▼aBranching fraction
■653 ▼aDetection
■653 ▼aDataset
■653 ▼aMeasured signal
■690 ▼a0798
■690 ▼a0364
■71020▼aUniversity of Colorado at Boulder▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g86-11B.
■790 ▼a0051
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356610▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
