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Probing Parton Distributions in Proton Using Drell-Yan and Charmonium Production in p + p and p + d Interactions With 120 GeV Proton Beam at Fermilab
Probing Parton Distributions in Proton Using Drell-Yan and Charmonium Production in p + p and p + d Interactions With 120 GeV Proton Beam at Fermilab
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105658
- ISBN
- 9798263307523
- DDC
- 537
- 서명/저자
- Probing Parton Distributions in Proton Using Drell-Yan and Charmonium Production in p + p and p + d Interactions With 120 GeV Proton Beam at Fermilab
- 발행사항
- [Sl] : University of Illinois at Urbana-Champaign, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 141 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Sickles, Anne M.
- 학위논문주기
- Thesis (Ph.D.Physics.)--University of Illinois at Urbana-Champaign, 2024.
- 초록/해제
- 요약E906/SeaQuest is a fixed-target experiment at Fermilab with a 120 GeV proton beam. The primary goal of the experiment is to study the partonic structure of the nucleon. Muon pairs with mass between 2 to 9 GeV from the interaction of proton beam with various targets, including liquid hydrogen and deuterium, have been detected. These events contains muons originating from the Drell-Yan process as well as charmonium decays. The measurement of the Drell-Yan σpd/2σpp cross section ratio is particularly sensitive to the light sea-quark asymmetry in the proton. The SeaQuest measurement provides information on the ¯d/u¯ asymmetry for Bjorken-x ranging from 0.1 to 0.45. The improved statistics of the SeaQuest measurement allows for a check on the surprising behavior of ¯d/u¯ at large x observed in E866/NuSea. The Drell-Yan cross section ratio is extracted from the entire SeaQuest dataset using two independent methods. The measured σpd/2σpp ratio is found to remain about unity, indicating the ¯d u¯ for x up to 0.45. The new result is compared with various parton distribution functions and theoretical calculations. In contrast to the Drell-Yan process, the charmonium production can be used to probe both the quark content as well as the gluon content. While the charmonium production mechanism is not as well understood as the Drell-Yan process, the large J/ψ production cross section allows for a higher statistics measurement. The SeaQuest charmonium production measurement covers the forward rapidity region of 0.5 xF 0.9. The measured cross sections are found to be in good agreement with theoretical calculations based on non relativistic QCD (NRQCD). The σψ0/σJ/ψ cross section ratios are found to increase as xF increases, indicating that the qq¯ annihilation process has larger contributions to the ψ 0 production than the J/ψ production. The σpd/2σpp cross section ratios are observed to be significantly different between the Drell-Yan process and charmonium production, reflecting the different production mechanisms. The PT distributions for J/ψ and ψ 0 production are also presented and compared with data collected at higher energies.
- 일반주제명
- Electromagnetics
- 일반주제명
- Nuclear physics
- 일반주제명
- Physics
- 일반주제명
- Physical chemistry
- 키워드
- Charmonium
- 키워드
- SeaQuest
- 기타저자
- University of Illinois at Urbana-Champaign Physics
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105658
■006m o d
■007cr#unu||||||||
■020 ▼a9798263307523
■035 ▼a(MiAaPQ)AAI32409807
■035 ▼a(MiAaPQ)124206
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a537
■1001 ▼aLeung, Ching Him.
■24510▼aProbing Parton Distributions in Proton Using Drell-Yan and Charmonium Production in p + p and p + d Interactions With 120 GeV Proton Beam at Fermilab
■260 ▼a[Sl]▼bUniversity of Illinois at Urbana-Champaign▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a141 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Sickles, Anne M.
■5021 ▼aThesis (Ph.D.Physics.)--University of Illinois at Urbana-Champaign, 2024.
■520 ▼aE906/SeaQuest is a fixed-target experiment at Fermilab with a 120 GeV proton beam. The primary goal of the experiment is to study the partonic structure of the nucleon. Muon pairs with mass between 2 to 9 GeV from the interaction of proton beam with various targets, including liquid hydrogen and deuterium, have been detected. These events contains muons originating from the Drell-Yan process as well as charmonium decays. The measurement of the Drell-Yan σpd/2σpp cross section ratio is particularly sensitive to the light sea-quark asymmetry in the proton. The SeaQuest measurement provides information on the ¯d/u¯ asymmetry for Bjorken-x ranging from 0.1 to 0.45. The improved statistics of the SeaQuest measurement allows for a check on the surprising behavior of ¯d/u¯ at large x observed in E866/NuSea. The Drell-Yan cross section ratio is extracted from the entire SeaQuest dataset using two independent methods. The measured σpd/2σpp ratio is found to remain about unity, indicating the ¯d u¯ for x up to 0.45. The new result is compared with various parton distribution functions and theoretical calculations. In contrast to the Drell-Yan process, the charmonium production can be used to probe both the quark content as well as the gluon content. While the charmonium production mechanism is not as well understood as the Drell-Yan process, the large J/ψ production cross section allows for a higher statistics measurement. The SeaQuest charmonium production measurement covers the forward rapidity region of 0.5 xF 0.9. The measured cross sections are found to be in good agreement with theoretical calculations based on non relativistic QCD (NRQCD). The σψ0/σJ/ψ cross section ratios are found to increase as xF increases, indicating that the qq¯ annihilation process has larger contributions to the ψ 0 production than the J/ψ production. The σpd/2σpp cross section ratios are observed to be significantly different between the Drell-Yan process and charmonium production, reflecting the different production mechanisms. The PT distributions for J/ψ and ψ 0 production are also presented and compared with data collected at higher energies.
■590 ▼aSchool code: 0090.
■650 4▼aElectromagnetics
■650 4▼aNuclear physics
■650 4▼aPhysics
■650 4▼aPhysical chemistry
■653 ▼aDrell-Yan process
■653 ▼aCharmonium
■653 ▼aSeaQuest
■653 ▼aParton distribution
■690 ▼a0756
■690 ▼a0607
■690 ▼a0605
■690 ▼a0494
■71020▼aUniversity of Illinois at Urbana-Champaign▼bPhysics.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0090
■791 ▼aPh.D.Physics.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17361051▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


