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 20 of 26 for “"exclusion limits"”.
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Search for Squark Production in R-Parity Violating Supersymmetry at HERA
… from the Standard Model has been found and exclusion limits in various supersymmetric models have been derived.
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Searches for Vector Like Quarks Decaying to Ht, Zt, or Wt in the Single Lepton Channel with the ATLAS Detector
… observed in the data above predicted background. Exclusion limits on the signal production cross section are set at 95% confidence level, extending the exclusion limits to masses of 1.9 TeV for singlet T models of Vector-Like quarks, with universal coupling strength κ > 0.6. These results also …
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Suche nach Kontakt-Wechselwirkungen und Gravitoneffekten in der tief-inelastischen Streuung bei HERA
… shows no evidence for new phenomena. Therefore exclusion limits are derived for the mentioned physical scenarios beyond the standard model. The combination of all data sets leads to maximum sensitivity and significantly improved limits compared to earlier results of H1.
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A search for the lightest supersymmetric partner of the top quark at DO
… standard model prediction is detected and new exclusion limits at the 95% C.L. are set for a portion of the ( mt&d5;1,m n&d5; ) mass plane.
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Tanned gelatin: some biophysical and biochemical properties of a new gel exclusion agent and its application to the chromatography of proteins and viruses
… to develop a new bed material suitable for gel exclusion chromatography, which would embrace all the desirable characteristics of available materials used for this purpose and if possible improve on some of them. The two most important limitations of existing gel media concern their exclusion …
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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
… standard model background processes is observed. Exclusion limits are set in the context of simplified models of top squark pair production under various decay hypotheses.
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Holly Pacey and the Half-Spin Particles: Searching for new physics with leptons at the ATLAS experiment
… The first search placed the first ATLAS Run 2 limits on chargino pair production decaying via W-bosons, excluding chargino masses up to 410 GeV for a massless neutralino. This was surpassed by the second search, resulting in world-leading exclusion limits on this process, up to 420 GeV, as well …
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Search for supersymmetric particles in opposite sign dilepton events with the CMS detector
… Using this technique, we were able to set exclusion limits in the cMSSM plane at 95% of confidence level, using a Bayesian approach.
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Search for Magnetic Monopoles and Stable High-Electric-Charge Objects in 13 TeV Centre-of-Mass Energy Proton-Proton Collisions with the ATLAS Detector at the LHC
… Standard Model predictions are observed, thus exclusion limits are placed on production models. These limits surpass the ones obtained in the previous search. With the increase in statistics and an interest in heavy-ion collisions, the search for magnetic monopoles and stable …
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First Search for Gravitational Wave Coincident Neutrinos in a Liquid Argon Detector with DEAP-3600
… of the seven mergers examined. This allows for exclusion limits to be set on the electron neutrino fluence that reached the detector at 3.35×10^14 cm^−2 (7.24×10^11 cm^−2) for 10 MeV(100 MeV) electron neutrinos. Future LAr detectors such as DarkSide-20k, also built to detect dark matter, employ …
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Machine learning based searches for new physics at the ATLAS experiment
… the background modelling, respectively. Exclusion limits are set on the masses of the charginos and neutralinos, which cover an important gap in sensitivity between previous searches. Secondly, a novel method for performing model-independent searches for parity-violating new physics is …
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Theoretical and experimental approaches to the dark energy and the cosmological constant problem.
… the expectations from standard model processes. Exclusion limits are presented for simplified supersymmetric models for pair production of gluinos, supersymmetric partners of gluons. Depending on the assumed gluino decay mechanism, and for a massless, weakly interacting, lightest neutralino, …
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Sterile neutrinos in cold climates
… for MSW-resonant oscillations is observed, and exclusion limits on 3+1 model parameter space are derived. Under the mixing assumptions made, the 90% confidence level exclusion limit extends to ... , and the LSND and MiniBooNE allowed regions are excluded at >99% confidence level.
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Reconstructing the Top Quark in a Search for a Pair-Produced Supersymmetric Partner in the All-Hadronic plus Missing Energy Final State Using $139$~$\text{fb}^{-1}$ of $\sqrt{s}=13$~TeV Proton-Proton Collisions Delivered by the Large Hadron Collider and Collected by the ATLAS Detector
… Standard Model predictions were observed and exclusion limits can be placed to stop masses up to 1.25 TeV, assuming a $100\%$ branching fraction of $\tilde{t}\rightarrow t\chi^{0}_{1}$. This dissertation includes previously published and unpublished co-authored material.
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Search for Diboson resonances in 8 tev and 13 tev proton-proton collisions at the large hadron collider with the atlas detector
… searches found evidence of any resonance, and exclusion limits are set on σ(pp → V ′) and σ(pp → G∗). For the 2012 ATLAS data, searches are performed for the G∗ and the W′. The sample corresponds to an integrated luminosity of 20.3 fb−1 proton-proton collisions with a center of mass energy √s = …
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TRACKING THE INVISIBLE. A SEARCH FOR SUPERSYMMETRIC HIGGSINOS WITH THE ATLAS DETECTOR.
… is observed, and 95\% confidence level exclusion limits are set on the chargino and neutralino masses as a function of their mass splitting. In the mass splitting range $0.35-1$ GeV, chargino masses are excluded up to about 170 GeV, significantly extending the reach beyond the legacy LEP …
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Dark Matter Search with the PICO-40L Bubble Chamber
… will provide a modest improvement in dark matter limits compared to PICO-60, the previous bubble chamber operated by the PICO collaboration at SNOLAB. However, it serves as proof of the operational stability of the RSU design, which will be employed in the next-generation PICO-500 detector. …
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Development of dimension lumber grade and yield estimates for yellow-poplar sawlogs and trees
… on the southern pine log grades with log defect exclusion limits. Dimension lumber and residue yields for the yellow-poplar dimension lumber log grades are presented. The use of various grading schemes for stratifying yellow-poplar trees into salable dimension lumber classes was evaluated. It was …
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The need for a community-wide determination of the fundamental constants
… generally lead to falsely-restrictive exclusion limits--- a result that has implications for many proposed solutions to the muon g-2 anomaly. We have created an online interface called CONSTANT FINDER to enable the community-wide investigation of the scheme dependence of the fundamental …
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The Development of the ATLAS SCT as a Luminometer and the Search for SUSY Decays with Compressed Mass Spectra
… observed above the Standard Model background and limits at 95% confidence level are set. Stop quarks are found to be excluded up to 500 GeV and mass splittings between the stop and the neutralino are found to be excluded up to 130 GeV, complimenting the exclusion limits found by other ATLAS …
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