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Search for mildly relativistic magnetic monopoles with IceCube / vorgelegt von Anna Maria Pollmann, geb. Obertacke. Wuppertal, November 2015
Inhalt
Abstract
Zusammenfassung
Table of Contents
Introduction
1 IceCube
1.1 Cosmic rays
1.1.1 Air showers
1.1.2 Neutrinos
1.2 Detector design
1.2.1 Geometry
1.2.2 Antarctic ice
1.2.3 DOMs
1.2.4 Analysis strategy
1.3 Discussion
2 Magnetic Monopoles
2.1 Charge
2.2 Mass
2.3 Acceleration
2.4 Theoretical and experimental constraints
2.5 Discussion
3 Interaction with matter
3.1 Monopole-electron cross section
3.1.1 Rutherford cross section
3.1.2 Mott cross section
3.1.3 KYG cross section
3.1.4 Discussion
3.2 Energy loss
3.2.1 Standard model particles
3.2.2 Collisional losses
3.2.3 Radiative energy losses
3.2.4 Weak and strong interactions
3.3 Cherenkov light
3.3.1 Direct Cherenkov light from electrically charged particles
3.3.2 Direct Cherenkov light from monopoles
3.3.3 Indirect Cherenkov light from monopoles
3.3.4 Angular distribution of indirect Cherenkov light
3.3.5 Discussion
4 Simulation and data processing
4.1 Background simulation
4.1.1 Muons originating from air showers
4.1.2 Neutrinos
4.1.3 Particle Propagation
4.1.4 Light generation and propagation
4.2 Signal simulation
4.2.1 Monopole Generation
4.2.2 Monopole Propagation
4.2.3 Light simulation
4.3 Burn sample
4.4 Standard processing
4.4.1 Trigger
4.4.2 Online processing and filter
4.4.3 Offline processing
4.5 Discussion
5 Event selection
5.1 Processing and reconstruction
5.1.1 Monopole processing
5.1.2 Reconstruction
5.1.3 Quality cuts and background reduction
5.2 Pull-validation
5.2.1 The pull
5.2.2 Preparations
5.2.3 Analysis
5.2.4 Checks
5.3 Uncertainties
5.4 Background expectation
5.4.1 Model rejection factor
5.4.2 Calculation of sensitivity
5.4.3 Calculation of limit
5.4.4 Velocity dependence
5.5 Discussion
6 Results
6.1 Unblinding
6.2 Discussion
6.3 Limits
7 Conclusion and outlook
Appendices
A Further detection mechanisms
A.1 Luminescence light from Monopoles
A.1.1 Luminescence of water-ice
A.1.2 Neutrino-detectors and luminescence of monopoles
A.2 Nucleon Decay
B Check of the detected PeV track
C Analysis methods
C.1 Event selection with cuts
C.2 Boosted decision tree
C.3 Resampling methods
D Computational methods
D.1 Statistics
D.2 Generation of random numbers giving a power law
D.3 Weighting
D.4 Plotting angular distributions
E Further plots and tables
E.1 Values of the final limit
E.2 Unblinded events
E.3 Pre-cuts for pull-validation
E.4 Features for pull-validation
References
List of Figures
List of Tables
Index