Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Squarks"”.
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Suche nach der Produktion von einzelnen Leptoquarks oder Squarks in Elektron-Photon-Wechselwirkungen mit dem OPAL-Experiment
… Produktion von einzelnen Leptoquarks (LQ) und Squarks gesucht. <br>Leptoquarks bzw. Squarks sind neue Teilchen, die in Erweiterungstheorien des Standardmodells (SM) eingefuehrt werden: LQ kommen z.B. in Theorien vor, in denen die Leptonen und Quarks nicht mehr elementar sind und vermitteln …
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Search for Squark Production in R-Parity Violating Supersymmetry at HERA
This thesis describes a search for squarks in supersymmetric models which allow R-parity violation. Electron-proton and positron-proton collisions taken at a centre of mass energy of 320 GeV have been investigated using the H1 detector at HERA. No deviation from the Standard Model has been found …
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The hunting of the squark: experimental strategies in the search for supersymmetry at the Large Hadron Collider
… details of a search for hadronically-decaying squarks and gluinos, carried out on 4.7 fb−1 of data collected at 7 TeV in 2011 by the ATLAS detector. The search strategy is described, focusing on the implementation of a background estimation method using photon events to determine the background …
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Symbolic computation of electron-proton to slepton-squark scattering cross sections based on a left-right supersymmetric extension of the standard model
… written down, and the production of sleptons and squarks resulting from the t-channel exchange of neutralinos and charginos in electron-proton scattering is analyzed. The symbolic programming language Mathematica ® , is used to develop a program to generate a symbolic representation of the …
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Search for Direct Top Squark Pair Production via the Fully Hadronic Final State from proton-proton Collisions at sqrt(s) = 13 TeV
A search for direct pair production of top squarks, the hypothetical supersymmetric partner to the top quark, in proton-proton collisions is presented for two scenarios each requiring jets and a large transverse momentum imbalance. The CMS detector observed the proton-proton collisions which were …
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Targeting Natural Supersymmetry With Top Quarks
… supersymmetry via the production of light top squarks (stops) with the ATLAS experiment, using 13 TeV proton-proton collision data delivered by the Large Hadron Collider. A range of models is considered where the stop may decay to top quarks, b jets, and a variety of other supersymmetric …
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Identifying fake leptons in ATLAS while hunting SUSY in 8 TeV proton-proton collisions
… processes. These include pair production of squarks and gluinos. The latter of these are particularly relevant for the analysis presented herein since gluinos are Majorana fermions; hence they can decay to produce like-charge leptons. The analysis considers several SUSY production topologies …
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Estimation of the Z->vv background to New Physics searches in ATLAS
… SUSY models, which currently exclude equal mass squarks and gluinos below 1.4 TeV.
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Testing the Standard Model with Top-Quark Production
… allowing for arbitrary left-right mixing of the squarks. We find that the correction is significant for several combinations of gluino and squark masses, e.g. +33% for m8= 200 GeV, m;-= mq= 75 GeV. Single-top-quark production at hadron colliders provides an opportunity to directly probe the …
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Aspects of electroweak symmetry breaking in physics beyond the standard model
… neutralinos and a light chargino. Although the squarks, sleptons and Z′ boson are typically much heavier, the exotic color triplet charge 1/3 fermions as well as the lightest stop can be also relatively light leading to spectacular new physics signals at the LHC.
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Observation of upsilon suppression, search for long-lived particles, and observation of B0s → micro + micro-- at the LHC with the CMS experiment
… In the second, events contain a pair of squarks that each decay to a long-lived neutralino, each of which in turn decays to dileptons and a neutrino. We performed the search with the CMS tracker and muon system separately and combined the limits obtained.^ A search for …