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Search for Microscopic Black Holes and Sphalerons in Proton-Proton Collisions at 13 TeV
Search for Microscopic Black Holes and Sphalerons in Proton-Proton Collisions at 13 TeV
Search for Microscopic Black Holes and Sphalerons in Proton-Proton Collisions at 13 TeV

Detailed Information

Material Type  
 단행본
 
0017360963
Date and Time of Latest Transaction  
20260202105644
ISBN  
9798270213329
DDC  
530
Author  
Lo, Ya-Feng.
Title/Author  
Search for Microscopic Black Holes and Sphalerons in Proton-Proton Collisions at 13 TeV
Publish Info  
[Sl] : University of California, Los Angeles, 2025
Publish Info  
Ann Arbor : ProQuest Dissertations & Theses, 2025
Material Info  
139 p
General Note  
Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
General Note  
Advisor: Hauser, Jay.
학위논문주기  
Thesis (Ph.D.Physics.)--University of California, Los Angeles, 2025.
Abstracts/Etc  
요약This thesis presents a search for microscopic black holes and sphalerons using proton-proton collisions at √ s = 13 TeV recorded by the CMS detector during the 2016−2018 data taking, and corresponding to an integrated luminosity of 138 fb−1 , is presented. Two data-driven search strategies are used. Model independent limits on the cross section of a new physics signal with multiple jets and leptons are set using a method that relies on the shape invariance of the scalar sum of the transverse momenta of all objects in the event. Model dependent limits on black hole and sphaleron production are set using the best results from scanning the model independent limits. In the context of models with large extra dimensions, semiclassical black holes with masses below 8.0−10.6 TeV are excluded, significantly extending the reach in comparison to limits from previous searches. Results of a dedicated search for electroweak sphalerons are used to derive an upper limit of 0.0027 at 95% confidence level on the fraction of all quark-quark interactions above the nominal threshold of 9 TeV energy for the sphaleron transition.
Subject Added Entry-Topical Term  
Physics
Subject Added Entry-Topical Term  
Nuclear physics
Subject Added Entry-Topical Term  
Theoretical physics
Index Term-Uncontrolled  
Proton-proton collisions
Index Term-Uncontrolled  
Microscopic black holes
Index Term-Uncontrolled  
Luminosity
Index Term-Uncontrolled  
Sphaleron transition
Added Entry-Corporate Name  
University of California, Los Angeles Physics 0666
Host Item Entry  
Dissertations Abstracts International. 87-06B.
Electronic Location and Access  
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■035    ▼a(MiAaPQ)AAI32399870
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a530
■1001  ▼aLo,  Ya-Feng.
■24510▼aSearch  for  Microscopic  Black  Holes  and  Sphalerons  in  Proton-Proton  Collisions  at  13  TeV
■260    ▼a[Sl]▼bUniversity  of  California,  Los  Angeles▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a139  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-06,  Section:  B.
■500    ▼aAdvisor:  Hauser,  Jay.
■5021  ▼aThesis  (Ph.D.Physics.)--University  of  California,  Los  Angeles,  2025.
■520    ▼aThis  thesis  presents  a  search  for  microscopic  black  holes  and  sphalerons  using  proton-proton  collisions  at  √  s  =  13  TeV  recorded  by  the  CMS  detector  during  the  2016−2018  data  taking,  and  corresponding  to  an  integrated  luminosity  of  138  fb−1  ,  is  presented.  Two  data-driven  search  strategies  are  used.  Model  independent  limits  on  the  cross  section  of  a  new  physics  signal  with  multiple  jets  and  leptons  are  set  using  a  method  that  relies  on  the  shape  invariance  of  the  scalar  sum  of  the  transverse  momenta  of  all  objects  in  the  event.  Model  dependent  limits  on  black  hole  and  sphaleron  production  are  set  using  the  best  results  from  scanning  the  model  independent  limits.  In  the  context  of  models  with  large  extra  dimensions,  semiclassical  black  holes  with  masses  below  8.0−10.6  TeV  are  excluded,  significantly  extending  the  reach  in  comparison  to  limits  from  previous  searches.  Results  of  a  dedicated  search  for  electroweak  sphalerons  are  used  to  derive  an  upper  limit  of  0.0027  at  95%  confidence  level  on  the  fraction  of  all  quark-quark  interactions  above  the  nominal  threshold  of  9  TeV  energy  for  the  sphaleron  transition.
■590    ▼aSchool  code:  0031.
■650  4▼aPhysics
■650  4▼aNuclear  physics
■650  4▼aTheoretical  physics
■653    ▼aProton-proton  collisions
■653    ▼aMicroscopic  black  holes
■653    ▼aLuminosity
■653    ▼aSphaleron  transition
■690    ▼a0605
■690    ▼a0753
■690    ▼a0756
■71020▼aUniversity  of  California,  Los  Angeles▼bPhysics  0666.
■7730  ▼tDissertations  Abstracts  International▼g87-06B.
■790    ▼a0031
■791    ▼aPh.D.Physics.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360963▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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