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Searching Beyond the Standard Model With the ATLAS Experiment: B − L R-Parity Violating Supersymmetry
Searching Beyond the Standard Model With the ATLAS Experiment: B − L R-Parity Violating Su...
Searching Beyond the Standard Model With the ATLAS Experiment: B − L R-Parity Violating Supersymmetry

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202103140
ISBN  
9798280759305
DDC  
530
저자명  
Osojnak, Lauren.
서명/저자  
Searching Beyond the Standard Model With the ATLAS Experiment: B − L R-Parity Violating Supersymmetry
발행사항  
[Sl] : University of Pennsylvania, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
209 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
주기사항  
Advisor: Thomson, Evelyn.
학위논문주기  
Thesis (Ph.D.)--University of Pennsylvania, 2025.
초록/해제  
요약This dissertation presents two searches for supersymmetric particles performed with data collected from the ATLAS detector at the Large Hadron Collider. These searches are motivated by a supersymmetric model with an extra local symmetry U(1)B−L. In this model the charged and neutral winos (superpartners to the Standard Model gauge bosons) or scalar top quarks may be the lightest supersymmetric particle and can decay through an R-parity violating coupling. The first search is presented for direct pair production of the stop, the supersymmetric partner of the top quark, in a decay through an R-parity violating coupling to a charged lepton and a b-quark. The dataset corresponds to an integrated luminosity of 140 fb−1 of proton-proton collisions at a center-of-mass energy of √ s = 13 TeV collected between 2015 and 2018 by the ATLAS detector at the Large Hadron Collider. The final state has two charged leptons (electrons or muons) and two b-jets. No significant excess is observed over the Standard Model background and exclusion limits on stop pair production are set at 95% confidence level. The corresponding lower limits on the stop mass for 100% branching ratios to a b-quark and an electron, muon, or tau-lepton are 1.9 TeV, 1.8 TeV and 800 GeV, respectively, extending the reach of previous Large Hadron Collider searches. The second search is for charged and neutral winos (charginos and neutralinos) using proton-proton collisions with the ATLAS detector at the Large Hadron Collider with a center-of-mass energy of √ s = 13 TeV collected between 2015 and 2018 and √ s = 13.6 TeV collected between 2022 and 2023. This search targets couplings of the chargino to muons or electrons, decays of the Higgs bosons to b-quarks, and events with one or two leptons in the final state. Work on the operation and calibration of the ATLAS Transition Radiation Tracker is also presented.
일반주제명  
Physics
일반주제명  
Quantum physics
일반주제명  
Energy
일반주제명  
Particle physics
일반주제명  
Computational physics
키워드  
Large Hadron Collider
키워드  
ATLAS detector
키워드  
R-parity
키워드  
Quark
키워드  
Proton-proton collisions
기타저자  
University of Pennsylvania Physics and Astronomy
기본자료저록  
Dissertations Abstracts International. 86-12B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■035    ▼a(MiAaPQ)AAI31993966
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a530
■1001  ▼aOsojnak,  Lauren.
■24510▼aSearching  Beyond  the  Standard  Model  With  the  ATLAS  Experiment:  B  −  L  R-Parity  Violating  Supersymmetry
■260    ▼a[Sl]▼bUniversity  of  Pennsylvania▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a209  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-12,  Section:  B.
■500    ▼aAdvisor:  Thomson,  Evelyn.
■5021  ▼aThesis  (Ph.D.)--University  of  Pennsylvania,  2025.
■520    ▼aThis  dissertation  presents  two  searches  for  supersymmetric  particles  performed  with  data  collected  from  the  ATLAS  detector  at  the  Large  Hadron  Collider.  These  searches  are  motivated  by  a  supersymmetric  model  with  an  extra  local  symmetry  U(1)B−L.  In  this  model  the  charged  and  neutral  winos  (superpartners  to  the  Standard  Model  gauge  bosons)  or  scalar  top  quarks  may  be  the  lightest  supersymmetric  particle  and  can  decay  through  an  R-parity  violating  coupling.  The  first  search  is  presented  for  direct  pair  production  of  the  stop,  the  supersymmetric  partner  of  the  top  quark,  in  a  decay  through  an  R-parity  violating  coupling  to  a  charged  lepton  and  a  b-quark.  The  dataset  corresponds  to  an  integrated  luminosity  of  140  fb−1  of  proton-proton  collisions  at  a  center-of-mass  energy  of  √  s  =  13  TeV  collected  between  2015  and  2018  by  the  ATLAS  detector  at  the  Large  Hadron  Collider.  The  final  state  has  two  charged  leptons  (electrons  or  muons)  and  two  b-jets.  No  significant  excess  is  observed  over  the  Standard  Model  background  and  exclusion  limits  on  stop  pair  production  are  set  at  95%  confidence  level.  The  corresponding  lower  limits  on  the  stop  mass  for  100%  branching  ratios  to  a  b-quark  and  an  electron,  muon,  or  tau-lepton  are  1.9  TeV,  1.8  TeV  and  800  GeV,  respectively,  extending  the  reach  of  previous  Large  Hadron  Collider  searches.  The  second  search  is  for  charged  and  neutral  winos  (charginos  and  neutralinos)  using  proton-proton  collisions  with  the  ATLAS  detector  at  the  Large  Hadron  Collider  with  a  center-of-mass  energy  of  √  s  =  13  TeV  collected  between  2015  and  2018  and  √  s  =  13.6  TeV  collected  between  2022  and  2023.  This  search  targets  couplings  of  the  chargino  to  muons  or  electrons,  decays  of  the  Higgs  bosons  to  b-quarks,  and  events  with  one  or  two  leptons  in  the  final  state.  Work  on  the  operation  and  calibration  of  the  ATLAS  Transition  Radiation  Tracker  is  also  presented.
■590    ▼aSchool  code:  0175.
■650  4▼aPhysics
■650  4▼aQuantum  physics
■650  4▼aEnergy
■650  4▼aParticle  physics
■650  4▼aComputational  physics
■653    ▼aLarge  Hadron  Collider
■653    ▼aATLAS  detector
■653    ▼aR-parity
■653    ▼aQuark
■653    ▼aProton-proton  collisions
■690    ▼a0605
■690    ▼a0599
■690    ▼a0798
■690    ▼a0216
■690    ▼a0791
■71020▼aUniversity  of  Pennsylvania▼bPhysics  and  Astronomy.
■7730  ▼tDissertations  Abstracts  International▼g86-12B.
■790    ▼a0175
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357153▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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