The Resource Search for scalar top quarks and Higgsino-like neutralinos : SUSY hunting with a "soft" lepton at the LHC, Takuya Nobe

Search for scalar top quarks and Higgsino-like neutralinos : SUSY hunting with a "soft" lepton at the LHC, Takuya Nobe

Label
Search for scalar top quarks and Higgsino-like neutralinos : SUSY hunting with a "soft" lepton at the LHC
Title
Search for scalar top quarks and Higgsino-like neutralinos
Title remainder
SUSY hunting with a "soft" lepton at the LHC
Statement of responsibility
Takuya Nobe
Creator
Author
Subject
Genre
Language
eng
Summary
This book reports a search for theoretically natural supersymmetry (SUSY) at the Large Hadron Collider (LHC). The data collected with the ATLAS detector in 2012 corresponding to 20 /fb of an integrated luminosity have been analyzed for stop pair production in proton{u2013}proton collisions at a center-of-mass energy of 8 TeV at the Large Hadron Collider (LHC) in the scenario of the higgsino-like neutralino. The author focuses on stop decaying into a bottom quark and chargino. In the scenario of the higgsino-like neutralino, the mass difference between charginos and neutralinos (?m) is expected to be small, and observable final-state particles are likely to have low-momentum (soft). The autho r develops a dedicated analysis with a soft lepton as a probe of particles from chargino decay, which suppresses the large amount of backgrounds. As a result of the analysis, no significant SUSY signal is observed. The 95% confidence-level exclusion limits are set to masses of stop and neutralino assuming ?m = 20 GeV. The region with ?M (the mass difference between stop and neutralino) < 70 GeV is excluded for the first time at stop mass of less than 210 GeV. The author also excludes the signals with ?M > 120 GeV up to 600 GeV of stop mass with neutralino mass of less than 280 GeV. The author clearly shows very few remaining parameter spaces for light stop (e.g., topology of stop decay is extremely similar to the SM top quark) by combining his results and previous ATLAS analyses. His results provide a strong constraint to searches for new physics in the future
Member of
Cataloging source
N$T
http://library.link/vocab/creatorName
Nobe, Takuya
Dewey number
539.7/2167
Illustrations
illustrations
Index
no index present
LC call number
QC793.5.Q2524
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
Series statement
Springer theses
http://library.link/vocab/subjectName
  • Supersymmetry
  • Neutrinos
  • Quarks
  • SCIENCE
  • Neutrinos
  • Quarks
  • Supersymmetry
  • Physics
  • Particle Acceleration and Detection, Beam Physics
  • Measurement Science and Instrumentation
Label
Search for scalar top quarks and Higgsino-like neutralinos : SUSY hunting with a "soft" lepton at the LHC, Takuya Nobe
Link
https://ezproxy.lib.ou.edu/login?url=http://link.springer.com/10.1007/978-981-10-0003-4
Instantiates
Publication
Copyright
Note
"Doctoral thesis accepted by Tokyo Institute of Technology, Tokyo, Japan."
Antecedent source
unknown
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Color
multicolored
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Contents
  • Supervisor's Foreword; Acknowledgments; Contents; 1 Introduction; 1.1 The Standard Model; 1.1.1 Electroweak Interaction; 1.1.2 The Spontaneous Symmetry Breaking; 1.1.3 Quantum-Chromo Dynamics (QCD); 1.1.4 Test of the SM; 1.1.5 Problems of the SM; 1.2 Supersymmetry; 1.2.1 Minimum Supersymmetric Standard Model (MSSM); 1.2.2 R-Parity; 1.2.3 SUSY Breaking; 1.2.4 The MSSM Higgs Sector; 1.2.5 SUSY Spectrum; 1.2.6 Natural SUSY Versus 125GeV Higgs Boson; 1.3 Productions and Decay Modes of SUSY Particles at the LHC; 1.4 Current Status of SUSY Searches
  • 1.4.1 Search for Direct Chargino Pair Production at the LEP1.4.2 Search for Direct Production of Electroweak Gauginos at the LHC; 1.4.3 Search for Scalar Top Quark Pair Production at the LHC; 1.5 Target Event Topology of This Work; References; 2 The LHC and the ATLAS Experiment; 2.1 The Large Hadron Collider; 2.2 The ATLAS Detector; 2.2.1 Inner Detector; 2.2.2 Calorimetry; 2.2.3 Muon Spectrometer; 2.2.4 Trigger and Data Acquisition System; References; 3 Data and Monte Carlo Simulation; 3.1 The ATLAS pp Collisions Data in 2012; 3.1.1 Data Processing and Online Calibration
  • 3.1.2 Luminosity Measurement3.1.3 Trigger Efficiency Measurement; 3.2 Monte Carlo Simulation; 3.2.1 Parton Distribution Function (PDF); 3.2.2 The Standard Model Backgrounds; 3.2.3 Signals; 3.2.4 Overlap Removal Between Diagrams by Matrix Element and Parton Shower; 3.2.5 Detector Simulation; 3.2.6 Pileup Re-Weighting; References; 4 Particle Reconstruction; 4.1 Track and Vertex Reconstruction; 4.1.1 Track Reconstruction; 4.1.2 Vertex Reconstruction; 4.1.3 Impact Parameter Resolution; 4.2 Electron Reconstruction; 4.2.1 Cluster Reconstruction at the EM Calorimeter; 4.2.2 Track Matching
  • 4.2.3 Energy Calibration4.2.4 Electron Identification; 4.2.5 Reconstruction and Identification Efficiency; 4.3 Muon Reconstruction; 4.3.1 Standalone Muon Reconstruction; 4.3.2 Combined Muon Reconstruction; 4.3.3 Segment-Tagged Muon Reconstruction; 4.3.4 Muon Momentum Scale and Resolution; 4.3.5 Muon Identification; 4.3.6 Reconstruction and Identification Efficiency; 4.4 Lepton Isolation; 4.5 Jet Reconstruction; 4.5.1 Calorimeter Clustering Criteria; 4.5.2 Anti-kT Algorithm; 4.5.3 Pileup Subtraction; 4.5.4 Jet Energy Scale (JES) and Resolution Calibration; 4.5.5 Jet Vertex Fraction (JVF)
Dimensions
unknown
Extent
1 online resource
File format
unknown
Form of item
online
Isbn
9789811000034
Level of compression
unknown
Media category
computer
Media MARC source
rdamedia
Media type code
c
Note
SpringerLink
Other control number
10.1007/978-981-10-0003-4
Other physical details
illustrations (some color).
Quality assurance targets
not applicable
Reformatting quality
unknown
Sound
unknown sound
Specific material designation
remote
System control number
  • (OCoLC)930781600
  • (OCoLC)ocn930781600
Label
Search for scalar top quarks and Higgsino-like neutralinos : SUSY hunting with a "soft" lepton at the LHC, Takuya Nobe
Link
https://ezproxy.lib.ou.edu/login?url=http://link.springer.com/10.1007/978-981-10-0003-4
Publication
Copyright
Note
"Doctoral thesis accepted by Tokyo Institute of Technology, Tokyo, Japan."
Antecedent source
unknown
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Color
multicolored
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Contents
  • Supervisor's Foreword; Acknowledgments; Contents; 1 Introduction; 1.1 The Standard Model; 1.1.1 Electroweak Interaction; 1.1.2 The Spontaneous Symmetry Breaking; 1.1.3 Quantum-Chromo Dynamics (QCD); 1.1.4 Test of the SM; 1.1.5 Problems of the SM; 1.2 Supersymmetry; 1.2.1 Minimum Supersymmetric Standard Model (MSSM); 1.2.2 R-Parity; 1.2.3 SUSY Breaking; 1.2.4 The MSSM Higgs Sector; 1.2.5 SUSY Spectrum; 1.2.6 Natural SUSY Versus 125GeV Higgs Boson; 1.3 Productions and Decay Modes of SUSY Particles at the LHC; 1.4 Current Status of SUSY Searches
  • 1.4.1 Search for Direct Chargino Pair Production at the LEP1.4.2 Search for Direct Production of Electroweak Gauginos at the LHC; 1.4.3 Search for Scalar Top Quark Pair Production at the LHC; 1.5 Target Event Topology of This Work; References; 2 The LHC and the ATLAS Experiment; 2.1 The Large Hadron Collider; 2.2 The ATLAS Detector; 2.2.1 Inner Detector; 2.2.2 Calorimetry; 2.2.3 Muon Spectrometer; 2.2.4 Trigger and Data Acquisition System; References; 3 Data and Monte Carlo Simulation; 3.1 The ATLAS pp Collisions Data in 2012; 3.1.1 Data Processing and Online Calibration
  • 3.1.2 Luminosity Measurement3.1.3 Trigger Efficiency Measurement; 3.2 Monte Carlo Simulation; 3.2.1 Parton Distribution Function (PDF); 3.2.2 The Standard Model Backgrounds; 3.2.3 Signals; 3.2.4 Overlap Removal Between Diagrams by Matrix Element and Parton Shower; 3.2.5 Detector Simulation; 3.2.6 Pileup Re-Weighting; References; 4 Particle Reconstruction; 4.1 Track and Vertex Reconstruction; 4.1.1 Track Reconstruction; 4.1.2 Vertex Reconstruction; 4.1.3 Impact Parameter Resolution; 4.2 Electron Reconstruction; 4.2.1 Cluster Reconstruction at the EM Calorimeter; 4.2.2 Track Matching
  • 4.2.3 Energy Calibration4.2.4 Electron Identification; 4.2.5 Reconstruction and Identification Efficiency; 4.3 Muon Reconstruction; 4.3.1 Standalone Muon Reconstruction; 4.3.2 Combined Muon Reconstruction; 4.3.3 Segment-Tagged Muon Reconstruction; 4.3.4 Muon Momentum Scale and Resolution; 4.3.5 Muon Identification; 4.3.6 Reconstruction and Identification Efficiency; 4.4 Lepton Isolation; 4.5 Jet Reconstruction; 4.5.1 Calorimeter Clustering Criteria; 4.5.2 Anti-kT Algorithm; 4.5.3 Pileup Subtraction; 4.5.4 Jet Energy Scale (JES) and Resolution Calibration; 4.5.5 Jet Vertex Fraction (JVF)
Dimensions
unknown
Extent
1 online resource
File format
unknown
Form of item
online
Isbn
9789811000034
Level of compression
unknown
Media category
computer
Media MARC source
rdamedia
Media type code
c
Note
SpringerLink
Other control number
10.1007/978-981-10-0003-4
Other physical details
illustrations (some color).
Quality assurance targets
not applicable
Reformatting quality
unknown
Sound
unknown sound
Specific material designation
remote
System control number
  • (OCoLC)930781600
  • (OCoLC)ocn930781600

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