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Halo-Independent Analysis of Light Dark Matter Direct Detection and Primordial Black Hole Neutrinogenesis
Halo-Independent Analysis of Light Dark Matter Direct Detection and Primordial Black Hole Neutrinogenesis
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152837
- ISBN
- 9798384086994
- DDC
- 593.7
- 저자명
- Chen, Muping.
- 서명/저자
- Halo-Independent Analysis of Light Dark Matter Direct Detection and Primordial Black Hole Neutrinogenesis
- 발행사항
- [Sl] : University of California, Los Angeles, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 132 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
- 주기사항
- Advisor: Gelmini, Graciela B.
- 학위논문주기
- Thesis (Ph.D.Physics.)--University of California, Los Angeles, 2024.
- 초록/해제
- 요약We study two topics in this thesis: the halo-independent (HI) analysis method for dark matter (DM)-electron scattering and the phenomenology of sterile neutrinos (νss) produced in the evaporation of early Universe black holes We demonstrate how the HI analysis can be applied to sub-GeV DM scattering off electrons for noble gas targets such as Xe and semiconductor targets such as Ge and Si. In the HI analysis method, properties of the local DM halo velocity distribution are inferred from direct DM detection data, which allows the comparison of different data sets without making any assumption on the uncertain local dark halo characteristics. This method had previously been developed for and applied only to DM scattering off nuclei. We additionally show that in-medium effects could significantly affect HI analysis results for semiconductor targets Ge and Si and thus are essential for proper inference of local DM halo characteristics from direct DM detection data. For νss as DM candidates, we discuss in detail the characteristics and phenomenology of νss that minimally couple only to active neutrinos and are produced in the evaporation of early Universe primordial black holes (PBHs), a process we call "PBH sterile neutrinogenesis". Contrary to previously studied νs production mechanisms, this novel mechanism does not depend on the active-sterile mixing. The resulting νss have a distinctive spectrum and are produced with larger energies than in typical scenarios. This characteristic enables νss to be warm DM in the unusual 0.3 MeV to 0.3 TeV mass range if PBHs do not matter-dominate the Universe before evaporating. When PBHs matter-dominate before evaporating, the possible coincidence of induced gravitational waves associated with PBH evaporation and astrophysical X-ray observations from νs decays would constitute a distinct signature of our scenario.
- 일반주제명
- Particle physics
- 일반주제명
- Astrophysics
- 일반주제명
- Physics
- 키워드
- Dark matter
- 키워드
- Black holes
- 키워드
- Neutrinos
- 키워드
- Neutrinogenesis
- 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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■00520250211152837
■006m o d
■007cr#unu||||||||
■020 ▼a9798384086994
■035 ▼a(MiAaPQ)AAI31561882
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a593.7
■1001 ▼aChen, Muping.
■24510▼aHalo-Independent Analysis of Light Dark Matter Direct Detection and Primordial Black Hole Neutrinogenesis
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a132 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-03, Section: B.
■500 ▼aAdvisor: Gelmini, Graciela B.
■5021 ▼aThesis (Ph.D.Physics.)--University of California, Los Angeles, 2024.
■520 ▼aWe study two topics in this thesis: the halo-independent (HI) analysis method for dark matter (DM)-electron scattering and the phenomenology of sterile neutrinos (νss) produced in the evaporation of early Universe black holes We demonstrate how the HI analysis can be applied to sub-GeV DM scattering off electrons for noble gas targets such as Xe and semiconductor targets such as Ge and Si. In the HI analysis method, properties of the local DM halo velocity distribution are inferred from direct DM detection data, which allows the comparison of different data sets without making any assumption on the uncertain local dark halo characteristics. This method had previously been developed for and applied only to DM scattering off nuclei. We additionally show that in-medium effects could significantly affect HI analysis results for semiconductor targets Ge and Si and thus are essential for proper inference of local DM halo characteristics from direct DM detection data. For νss as DM candidates, we discuss in detail the characteristics and phenomenology of νss that minimally couple only to active neutrinos and are produced in the evaporation of early Universe primordial black holes (PBHs), a process we call "PBH sterile neutrinogenesis". Contrary to previously studied νs production mechanisms, this novel mechanism does not depend on the active-sterile mixing. The resulting νss have a distinctive spectrum and are produced with larger energies than in typical scenarios. This characteristic enables νss to be warm DM in the unusual 0.3 MeV to 0.3 TeV mass range if PBHs do not matter-dominate the Universe before evaporating. When PBHs matter-dominate before evaporating, the possible coincidence of induced gravitational waves associated with PBH evaporation and astrophysical X-ray observations from νs decays would constitute a distinct signature of our scenario.
■590 ▼aSchool code: 0031.
■650 4▼aParticle physics
■650 4▼aAstrophysics
■650 4▼aPhysics
■653 ▼aDark matter
■653 ▼aBlack holes
■653 ▼aNeutrinos
■653 ▼aNeutrinogenesis
■690 ▼a0798
■690 ▼a0596
■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=T17164150▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
