@phdthesis{Fricke2013,
  author    = {Fricke, Patrick},
  title     = {Hyperextensionsverletzungen der thorakolumbalen Wirbels{\"a}ule},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-83062},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year      = {2013},
  abstract  = {Eine der seltensten Formen thorakolumbaler Wirbels{\"a}ulenverletzungen stellen Hyperextensionsl{\"a}sionen dar. In dieser retrospektiven Studie wurden 27 F{\"a}lle thorakolumbaler Hyperextensionsverletzungen, die zwischen 1997 und 2010 in der Universit{\"a}tsklinik W{\"u}rzburg behandelt wurden, analysiert und die Besonderheiten dieser Verletzungen verdeutlicht. Ergebnisse: In dem untersuchten Patientenkollektiv waren zu 74 \% M{\"a}nner von den Hyperextensionsverletzungen betroffen. Das Durchschnittsalter aller Patienten lag bei 70,6 Jahren (25 - 92 Jahre, SD 15,8). 22 Patienten litten zum Unfallzeitpunkt an Vorerkrankungen der Wirbels{\"a}ule: in 17 F{\"a}llen (63 \%) lag eine diffuse idiopathic skeletal hyperostosis (DISH) vor, bei 4 Patienten (14,8 \%) ein M. Bechterew und bei einer Patientin (3,7 \%) ausschließlich degenerative Ver{\"a}nderungen im Sinne einer Osteoporose. In 29,6 \% der F{\"a}lle war ein leichtes Trauma urs{\"a}chlich, bei 70,4 \% f{\"u}hrte ein hochenergetischer Unfall zu der Hyperextensionsverletzung. Bei 14 Patienten verliefen die Verletzungen der vorderen S{\"a}ule transdiskal (52 \%) und bei 13 transoss{\"a}r (48 \%). Bei allen Patienten ohne Vorsch{\"a}den der Wirbels{\"a}ule kam es dabei zu einer transdiskalen L{\"a}sion. 6 Patienten (22,2 \%) erlitten initial durch die Hyperextensionsverletzung ein neurologisches Defizit. Alle Patienten wurden operativ mittels Implantation eines Fixateur interne von dorsal stabilisiert. Schlussfolgerung: Im Vergleich mit der Literatur zeigte sich anhand der Daten dieser Studie, dass Hyperextensionsverletzungen der thorakolumbalen Wirbels{\"a}ule mit einem h{\"o}heren Risiko f{\"u}r neurologische Defizite einhergingen als andere thorakolumbale Verletzungen der Gruppe B. Dabei traten neurologische Defizite nur bei hochenergetischen Unf{\"a}llen auf. Ein durch M. Bechterew oder DISH versteiftes Achsenskelett erh{\"o}hte das Risiko f{\"u}r eine Hyperextensionsverletzung. Im Vergleich zu anderen Verletzungsformen der thorakolumbalen Wirbels{\"a}ule traten Hyperextensionsverletzungen verh{\"a}ltnism{\"a}ßig h{\"a}ufiger bei vorgesch{\"a}digten Wirbels{\"a}ulen und somit bei {\"a}lteren Menschen auf. Nur im Falle einer Vorerkrankung der Wirbels{\"a}ule konnte bereits ein niederenergetisches Trauma zu einer Hyperextensionsverletzung f{\"u}hren. Dabei war dann vor allem der thorakolumbale {\"U}bergang und weniger die thorakale Wirbels{\"a}ule betroffen, bei der es haupts{\"a}chlich durch hochenergetische Unf{\"a}lle zu Verletzungen kam. Transoss{\"a}re Hyperextensionsverletzungen der vorderen und der hinteren S{\"a}ule traten nur bei alterierten Wirbels{\"a}ulen auf. Bei wirbels{\"a}ulengesunden Patienten verlief die Verletzung jeweils transdiskal und durch die hintere S{\"a}ule ligament{\"a}r.},
  subject      = {Wirbels{\"a}ulenverletzung},
  language  = {de}
}
@article{OPUS4-22070,
  title     = {Search for supersymmetry in events with four or more leptons in root s=13 TeV \({pp}\) collisions with ATLAS},
  series = {Physical Review D},
  volume    = {98},
  journal   = {Physical Review D},
  number    = {3},
  organization    = {The ATLAS Collaboration},
  doi       = {10.1103/PhysRevD.98.032009},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-220705},
  pages     = {1-31},
  year      = {2018},
  abstract  = {Results from a search for supersymmetry in events with four or more charged leptons (electrons, muons and taus) are presented. The analysis uses a data sample corresponding to 36.1 fb(-1) of proton-proton collisions delivered by the Large Hadron Collider at root s = 13 TeV and recorded by the ATLAS detector. Four-lepton signal regions with up to two hadronically decaying taus are designed to target a range of supersymmetric scenarios that can be either enriched in or depleted of events involving the production and decay of a Z boson. Data yields are consistent with Standard Model expectations and results are used to set upper limits on the event yields from processes beyond the Standard Model. Exclusion limits are set at the 95\% confidence level in simplified models of general gauge mediated supersymmetry, where Higgsino masses are excluded up to 295 GeV. In R-parity-violating simplified models with decays of the lightest supersymmetric particle to charged leptons, lower limits of 1.46, 1.06, and 2.25 TeV are placed on wino, slepton and gluino masses, respectively.},
  language  = {en}
}
@article{OPUS4-22586,
  title     = {Search for \(B\) - \(L\) \(R\)-parity-violating top squarks in root s=13 TeV \({pp}\) collisions with the ATLAS experiment},
  series = {Physical Review D},
  volume    = {97},
  journal   = {Physical Review D},
  number    = {3},
  organization    = {The ATLAS Collaboration},
  doi       = {10.1103/PhysRevD.97.032003},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-225863},
  pages     = {1-42},
  year      = {2018},
  abstract  = {A search is presented for the direct pair production of the stop, the supersymmetric partner of the top quark, that decays through an R-parity-violating coupling to a final state with two leptons and two jets, at least one of which is identified as a b-jet. The data set corresponds to an integrated luminosity of 36.1 fb(-1) of proton-proton collisions at a center-of-mass energy of root s = 13 TeV, collected in 2015 and 2016 by the ATLAS detector at the LHC. No significant excess is observed over the Standard Model background, and exclusion limits are set on stop pair production at a 95\% confidence level. Lower limits on the stop mass are set between 600 GeV and 1.5 TeV for branching ratios above 10\% for decays to an electron or muon and a b-quark.},
  language  = {en}
}
@article{OPUS4-22084,
  title     = {Search for long-lived charginos based on a disappearing-track signature in pp collisions at root s=13 TeV with the ATLAS detector},
  series = {Journal of High Energy Physics},
  volume    = {22},
  journal   = {Journal of High Energy Physics},
  number    = {6},
  organization    = {The ATLAS collaboration},
  doi       = {10.1007/JHEP06(2018)022},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-220847},
  pages     = {1-46},
  year      = {2018},
  abstract  = {This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 fb(-1) of pp collisions at root s = 13 TeV collected by the ATLAS experiment at the LHC. The final state of interest is a disappearing track accompanied by at least one jet with high transverse momentum from initial-state radiation or by four jets from the gluino decay chain. The use of short track segments reconstructed from the innermost tracking layers significantly improves the sensitivity to short chargino lifetimes. The results are found to be consistent with Standard Model predictions. Exclusion limits are set at 95\% confidence level on the mass of charginos and gluinos for different chargino lifetimes. For a pure wino with a lifetime of about 0.2 ns, chargino masses up to 460 GeV are excluded. For the strong production channel, gluino masses up to 1.65 TeV are excluded assuming a chargino mass of 460 GeV and lifetime of 0.2 ns.},
  language  = {en}
}
@article{OPUS4-22073,
  title     = {Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb\(^{-1}\) of root s=13 TeV \({pp}\) collision data with the ATLAS detector},
  series = {Journal of High Energy Physics},
  volume    = {108},
  journal   = {Journal of High Energy Physics},
  number    = {6},
  organization    = {The ATLAS collaboration},
  doi       = {10.1007/JHEP06(2018)108},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-220733},
  pages     = {1-95},
  year      = {2018},
  abstract  = {The results of a search for the direct pair production of top squarks, the supersymmetric partner of the top quark, in final states with one isolated electron or muon, several energetic jets, and missing transverse momentum are reported. The analysis also targets spin-0 mediator models, where the mediator decays into a pair of dark-matter particles and is produced in association with a pair of top quarks. The search uses data from proton-proton collisions delivered by the Large Hadron Collider in 2015 and 2016 at a centre-of-mass energy of root s = 13TeV and recorded by the ATLAS detector, corresponding to an integrated luminosity of 36 fb(-1). A wide range of signal scenarios with different mass-splittings between the top squark, the lightest neutralino and possible intermediate supersymmetric particles are considered, including cases where the W bosons or the top quarks produced in the decay chain are off-shell. No significant excess over the Standard Model prediction is observed. The null results are used to set exclusion limits at 95\% confidence level in several supersymmetry benchmark models. For pair-produced top-squarks decaying into top quarks, top-squark masses up to 940 GeV are excluded. Stringent exclusion limits are also derived for all other considered top-squark decay scenarios. For the spin-0 mediator models, upper limits are set on the visible cross-section.},
  language  = {en}
}
@article{OPUS4-22074,
  title     = {Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at root s=13 TeV with the ATLAS detector},
  series = {Journal of High Energy Physics},
  volume    = {107},
  journal   = {Journal of High Energy Physics},
  number    = {6},
  organization    = {The ATLAS collaboration},
  doi       = {10.1007/JHEP06(2018)107},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-220748},
  pages     = {1-55},
  year      = {2018},
  abstract  = {A search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks into the lightest neutralino ((chi) over tilde (0)(1)) is reported. It uses LHC proton-proton collision data at a centre-of-mass energy root s = 13TeV with an integrated luminosity of 36.1 fb(-1) collected with the ATLAS detector in 2015 and 2016. The search is performed in events containing large missing transverse momentum and several energetic jets, at least three of which must be identified as originating from b-quarks. To increase the sensitivity, the sample is divided into subsamples based on the presence or absence of electrons or muons. No excess is found above the predicted background. For (chi) over tilde (0)(1) masses below approximately 300 GeV, gluino masses of less than 1.97 (1.92) TeV are excluded at 95\% confidence level in simplified models involving the pair production of gluinos that decay via top (bottom) squarks. An interpretation of the limits in terms of the branching ratios of the gluinos into third-generation squarks is also provided. These results improve upon the exclusion limits obtained with the 3.2 fb(-1) of data collected in 2015.},
  language  = {en}
}
@article{OPUS4-22651,
  title     = {Search for photonic signatures of gauge-mediated supersymmetry in 13 TeV \(pp\) collisions with the ATLAS detector},
  series = {Physical Review D},
  volume    = {97},
  journal   = {Physical Review D},
  organization    = {The ATLAS Collaboration},
  doi       = {10.1103/PhysRevD.97.092006},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-226510},
  pages     = {1-32},
  year      = {2018},
  abstract  = {A search is presented for photonic signatures, motivated by generalized models of gauge-mediated supersymmetry breaking. This search makes use of proton-proton collision data at root s = 13 TeV corresponding to an integrated luminosity of 36.1 fb(-1) recorded by the ATLAS detector at the LHC, and it explores models dominated by both strong and electroweak production of supersymmetric partner states. Experimental signatures incorporating an isolated photon and significant missing transverse momentum are explored. These signatures include events with an additional photon or additional jet activity not associated with any specific underlying quark flavor. No significant excess of events is observed above the Standard Model prediction, and 95\% confidence-level upper limits of between 0.083 and 0.32 fb are set on the visible cross section of contributions from physics beyond the Standard Model. These results are interpreted in terms of lower limits on the masses of gluinos, squarks, and gauginos in the context of generalized models of gauge-mediated supersymmetry, which reach as high as 2.3 TeV for strongly produced and 1.3 TeV for weakly produced supersymmetric partner pairs.},
  language  = {en}
}
@article{OPUS4-22604,
  title     = {Search for R-parity-violating supersymmetric particles in multi-jet final states produced in \({p-p}\) collisions at root \(s\)=13 TeV using the ATLAS detector at the LHC},
  series = {Physics Letters B},
  volume    = {785},
  journal   = {Physics Letters B},
  organization    = {The ATLAS Collaboration},
  doi       = {10.1016/j.physletb.2018.08.021},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-226047},
  pages     = {136-158},
  year      = {2018},
  abstract  = {Results of a search for gluino pair production with subsequent R-parity-violating decays to quarks are presented. This search uses 36.1 fb(-1) of data collected by the ATLAS detector in proton-proton collisions with a centre-of-mass energy of root s = 13 TeV at the LHC. The analysis is performed using requirements on the number of jets and the number of jets tagged as containing a b-hadron as well as a topological observable formed by the scalar sum of masses of large-radius jets in the event. No significant excess above the expected Standard Model background is observed. Limits are set on the production of gluinos in models with the R-parity-violating decays of either the gluino itself (direct decay) or the neutralino produced in the R-parity-conserving gluino decay (cascade decay). In the gluino cascade decay model, gluino masses below 1850 GeV are excluded for 1000 GeV neutralino mass. For the gluino direct decay model, the 95\% confidence level upper limit on the cross section times branching ratio varies between 0.80 fb at m((g) over tilde) = 900 GeV and 0.011 fb at m((g) over tilde) = 1800 GeV. (c) 2018 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license.},
  language  = {en}
}
@article{OPUS4-22560,
  title     = {Search for the direct production of charginos and neutralinos in final states with tau leptons in root s=13 TeV pp collisions with the ATLAS detector},
  series = {The European Physical Journal C},
  volume    = {78},
  journal   = {The European Physical Journal C},
  number    = {154},
  organization    = {The ATLAS Collaboration},
  doi       = {10.1140/epjc/s10052-018-5583-9},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-225602},
  pages     = {1-33},
  year      = {2018},
  abstract  = {A search for the direct production of charginos and neutralinos in final states with at least two hadronically decaying tau leptons is presented. The analysis uses a dataset of pp collisions corresponding to an integrated luminosity of 36.1 fb, recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 13 TeV. No significant deviation from the expected Standard Model background is observed. Limits are derived in scenarios of pair production and of and production in simplified models where the neutralinos and charginos decay solely via intermediate left-handed staus and tau sneutrinos, and the mass of the state is set to be halfway between the masses of the and the (chi) over tilde (0.)(1) . Chargino masses up to 630 GeV are excluded at 95\% confidence level in the scenario of direct production of for a massless (chi) over tilde (0.)(1). Common and masses up to 760 GeV are excluded in the case of production of and assuming a massless . Exclusion limits for additional benchmark scenarios with large and small mass-splitting between the and the are also studied by varying the mass between the masses of the and the (chi) over tilde (0.)(1)},
  language  = {en}
}
@article{OPUS4-22610,
  title     = {Search for new phenomena using the invariant mass distribution of same-flavour opposite-sign dilepton pairs in events with missing transverse momentum in root \(s\)=13 TeV \(pp\) collisions with the ATLAS detector},
  series = {European Physical Journal C},
  volume    = {78},
  journal   = {European Physical Journal C},
  organization    = {The ATLAS Collaboration},
  doi       = {10.1140/epjc/s10052-018-6081-9},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-226109},
  pages     = {1-38},
  year      = {2018},
  abstract  = {A search for new phenomena in final states containing an e(+)e(-) or m(+)m(-) pair, jets, and large missing transverse momentum is presented. This analysis makes use of proton-proton collision data with an integrated luminosity of 36.1 fb(-1), collected during 2015 and 2016 at a centre of-mass energy Os = 13 TeV with the ATLAS detector at the Large Hadron Collider. The search targets the pair production of supersymmetric coloured particles (squarks or gluinos) and their decays into final states containing an e(+)e(-) or m(+)m(-) pair and the lightest neutralino ((c) over tilde (0)(1)) via one of two next-to-lightest neutralino ((c) over tilde (0)(2)) decay mechanisms: (c) over tilde (0)(2) Z (c) over tilde (0)(1), where the Z boson decays leptonically leading to a peak in the dilepton invariant mass distribution around the Z boson mass; and (c) over tilde (0)(2) l(+)1(-) (c) over tilde (0)(1) with no intermediate l(+)l(-) resonance, yielding a kinematic endpoint in the dilepton invariant mass spectrum. The data are found to be consistent with the Standard Model expectation. Results are interpreted using simplified models, and exclude gluinos and squarks with masses as large as 1.85 and 1.3 TeV at 95\% confidence level, respectively.},
  language  = {en}
}