@phdthesis{Kittel2004,
  author    = {Kittel, Olaf},
  title     = {CP violation in production and decay of supersymmetric particles},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-12767},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year      = {2004},
  abstract  = {In dieser Dissertation untersuchen wir CP verletzende Effekte von MSSM-Phasen in Produktion und Zwei-Teilchen-Zerfaellen von Neutralinos, Charginos und Sfermionen. Fuer verschiedene supersymmetrische Prozesse definieren und berechnen wir CP-ungerade Asymmetrien, welche auf Spatprodukten basieren. Wir zeigen numerische Ergebnisse fuer Elektron-Positron-Kollisionen an einem zukuenftigen Linearbeschleuniger mit einer Energie von 500 - 800 GeV, hoher Luminositaet und longitudinal polarisierten Strahlen.},
  subject      = {Supersymmetrisches Teilchen},
  language  = {en}
}
@phdthesis{Speckner2009,
  author    = {Speckner, Christian},
  title     = {LHC Phenomenology of the Three-Site Higgsless Model},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-45931},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year      = {2009},
  abstract  = {The Three-Site Higgsless Model is alternative implementation of electroweak symmetry breaking which in the Standard Model is mediated by the Higgs mechanism. The main features of this model is the appearance of two new heavy vector resonances W' and Z' with masses > 380 GeV as well as a set of new heavy fermions (> 1.8 TeV). In this model, unitarity of the amplitudes for the scattering of longitudinal gauge bosons is maintained by the exchange of the W' and Z' up to a scale of ~2 TeV. Consistency with the electroweak precision observables from the LEP / LEP-II experiments implies an exceedingly small coupling of the new vector bosons to the light Standard Model fermions (about 3\% of the isospin gauge coupling). In this thesis, the LHC phenomenology of this scenario is explored. To this end, we calculated the couplings and widths of all the new particles and implemented the model into the Monte-Carlo eventgenerator WHIZARD / O'Mega. With this implementation, we simulated the parton-level production of the gauge boson and fermion partners in different channels possibly suitable for their discovery at the LHC. The results are presented together with an introduction to the model and a discussion of its properties. We find that, while the fermiophobic nature of the new heavy gauge bosons does make them intrinsically difficult to observe at a collider, the LHC should be able to establish the existence of both resonances and even give some hints about the properties of their couplings which would be a vital test of the consistency of such a scenario. For the heavy fermions, we find that their large mass is accompanied by relative widths of more than \$10\\%\$, making them ill-suited for a direct discovery at the LHC. Nevertheless, our simulations reveal that there is a part of parameter space where, given enough time, patience and a good understanding of detector and backgrounds, a direct discovery might be possible.},
  subject      = {LHC},
  language  = {en}
}
@phdthesis{Tam2014,
  author    = {Tam, Jason},
  title     = {Search for Second Generation Scalar Leptoquarks using the ATLAS Detector},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-103451},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year      = {2014},
  abstract  = {Leptoquarks are hypothetical particles that attempt to explain the coincidental similarities between leptons and quarks included in SM. Their exact properties vary between different theoretical models, and there are no strong theoretical constraints on their possible mass values. They can possibly be produced from particle collisions, and there have already been searching efforts at previous collider experiments. Their presence have yet been observed, and this fact has been translated into lower bound exclusions on their possible mass values. The Large Hadron Collider (LHC) being the most recently constructed particle collider with the highest collision energies ever achieved experimentally, provides a new platform to continue the search for Leptoquarks at even higher mass ranges. This thesis describes a search for pair-produced second-generation Leptoquarks using 20.3 fb-1 of data recorded by the ATLAS detector of LHC at √s = 8 TeV. Events with two oppositely charged muons and two or more jets in the final state were used. Candidate leptoquark events were selected with the help of four observables: the di-muon invariant mass (Mμμ ), the sum of the pT of the two muons (LT ), the sum of the pT of the two leading jets (HT ) and the average Leptoquark mass (MLQ ). Monte Carlo simulations of SM background processes have shown to be in good agreement with data, both in the region constructed using selection requirements for candiate leptoquark events and in the designated control regions. Since no significant excess of events was observed in data, a exclusion limit was set as a function of the Leptoquark mass.},
  subject      = {Leptoquark},
  language  = {en}
}