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Phenomenology of the Standard Model and Beyond
Phenomenology of the Standard Model and Beyond
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104829
- ISBN
- 9798293835676
- DDC
- 593.7
- 저자명
- Airen, Sagar.
- 서명/저자
- Phenomenology of the Standard Model and Beyond
- 발행사항
- [Sl] : University of Maryland, College Park, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 126 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
- 주기사항
- Advisor: Agashe, Kaustubh.
- 학위논문주기
- Thesis (Ph.D.)--University of Maryland, College Park, 2025.
- 초록/해제
- 요약While the Standard Model (SM) of particle physics is the most precise theory ever discovered, it is known to be incomplete. The SM cannot account for the observed Dark Matter (DM) in the universe or that the neutrinos have masses. Furthermore, theoretical puzzles such as the matter-antimatter asymmetry and the Planck-weak hierarchy remain unexplained within the SM. These shortcomings have motivated extensive efforts to search for physics beyond the SM (BSM).One promising class of BSM theories involves "Hidden Sectors", which are new particles and interactions that are singlets under SM gauge symmetries. While minimal hidden sector scenarios have been widely studied, models with non-minimal field content and richer dynamics remain less explored. In the first part of this dissertation, we examine both minimal and non-minimal hidden sector models, addressing open questions regarding their discovery potential. We evaluate the sensitivity of future lepton colliders to vector portal models across a range of benchmark scenarios, and demonstrate how neutrino telescopes can probe non-minimal hidden sectors using two simplified models.Precision measurements of SM observables, such as electroweak precision observables (EWPOs) and the anomalous magnetic moment of the muon (g−2), offer a complementary approach to direct searches by probing virtual effects of new physics. A crucial input to global EW fits is the top quark mass mt, which must be known with high precision to fully exploit the sensitivity of these observables. However, most current methods are limited by uncertainties in production modeling (including possible BSM effects therein) and jet energy calibration. In the second part of this dissertation, we propose a new method for measuring mt that reduces these sources of systematic uncertainty while involving complementary systematics. If implemented, this approach could significantly enhance the precision of current and future measurements, helping to sharpen indirect probes of BSM physics.
- 일반주제명
- Particle physics
- 일반주제명
- Astrophysics
- 키워드
- Dark Matter
- 키워드
- Standard Model
- 기타저자
- University of Maryland, College Park Physics
- 기본자료저록
- Dissertations Abstracts International. 87-03B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■007cr#unu||||||||
■020 ▼a9798293835676
■035 ▼a(MiAaPQ)AAI32170255
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a593.7
■1001 ▼aAiren, Sagar.▼0(orcid)0000-0002-3646-6537
■24510▼aPhenomenology of the Standard Model and Beyond
■260 ▼a[Sl]▼bUniversity of Maryland, College Park▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a126 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-03, Section: B.
■500 ▼aAdvisor: Agashe, Kaustubh.
■5021 ▼aThesis (Ph.D.)--University of Maryland, College Park, 2025.
■520 ▼aWhile the Standard Model (SM) of particle physics is the most precise theory ever discovered, it is known to be incomplete. The SM cannot account for the observed Dark Matter (DM) in the universe or that the neutrinos have masses. Furthermore, theoretical puzzles such as the matter-antimatter asymmetry and the Planck-weak hierarchy remain unexplained within the SM. These shortcomings have motivated extensive efforts to search for physics beyond the SM (BSM).One promising class of BSM theories involves "Hidden Sectors", which are new particles and interactions that are singlets under SM gauge symmetries. While minimal hidden sector scenarios have been widely studied, models with non-minimal field content and richer dynamics remain less explored. In the first part of this dissertation, we examine both minimal and non-minimal hidden sector models, addressing open questions regarding their discovery potential. We evaluate the sensitivity of future lepton colliders to vector portal models across a range of benchmark scenarios, and demonstrate how neutrino telescopes can probe non-minimal hidden sectors using two simplified models.Precision measurements of SM observables, such as electroweak precision observables (EWPOs) and the anomalous magnetic moment of the muon (g−2), offer a complementary approach to direct searches by probing virtual effects of new physics. A crucial input to global EW fits is the top quark mass mt, which must be known with high precision to fully exploit the sensitivity of these observables. However, most current methods are limited by uncertainties in production modeling (including possible BSM effects therein) and jet energy calibration. In the second part of this dissertation, we propose a new method for measuring mt that reduces these sources of systematic uncertainty while involving complementary systematics. If implemented, this approach could significantly enhance the precision of current and future measurements, helping to sharpen indirect probes of BSM physics.
■590 ▼aSchool code: 0117.
■650 4▼aParticle physics
■650 4▼aAstrophysics
■653 ▼aDark Matter
■653 ▼aStandard Model
■653 ▼aAntimatter asymmetry
■653 ▼aElectroweak precision
■690 ▼a0798
■690 ▼a0596
■71020▼aUniversity of Maryland, College Park▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g87-03B.
■790 ▼a0117
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359062▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
