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Calendar of Physics Talks Vienna
| Searching for top-quark pair resonances in the all-hadronic final state with ATLAS |
| Speaker: | Dr. Gregor Kasieczka (Uni Heidelberg) |
| Abstract: | A search for heavy resonances that decay into top-quark pairs producing two massive jets with high transverse momentum is presented. Data collected with the ATLAS detector during the proton–proton collision run at a centre-of-mass energy of 7 TeV in 2011 is analysed. The substructure-based HEPTopTagger algorithm is used to separate top-quark jets from those arising from light quarks and
gluons. Top-quark candidates are also required to have evidence of an associated bottom-quark decay. The contributions from Standard Model background processes, such as top-quark pair production and multijet production, are estimated using data-driven techniques. No significant ... For more information visit here |
| Date: | Mon, 07.10.2013 |
| Time: | 17:00 |
| Duration: | 60 min |
| Location: | Institute for High Energy Physics ( Library, 1st Floor ) Nikolsdorfer Gasse 18, 1050, Wien |
| Contact: | Ken Suzuki |
| Defect States at c-Si/a-Si3NxHy Interfaces |
| Speaker: | Leif Eric Hintzsche (University of Vienna) |
| Abstract: | Amorphous silicon nitrides are deposited on crystalline silicon as antireflection and passivating coatings. Up to date detailed knowledge about the interfaces is largely lacking. We have investigated the electronic and structural properties of c-Si/a-Si3NxHy interfaces obtained by large scale ab initio molecular dynamics simulations. Over 500 independent samples have been generated for each considered stoichiometry to perform a reliable defect analysis. While the classes of dominant defect states coincided with previous bulk calculations, we found a considerably increased defect density at the interface. By applying an energy and spatially resolved defect analysis, we observed that most of the defect states originate from the first silicon nitride layer at the interface. |
| Date: | Tue, 08.10.2013 |
| Time: | 12:30 |
| Duration: | 60 min |
| Location: | Univ. of Vienna, Faculty of Physics, Boltzmanngasse 5, 5th floor, Erwin Schrödinger Lecture Hall |
| Contact: | Albert Georg Passegger, Peter Poier - www.univie.ac.at/lunch-seminar |
| The excitation spectrum of rotating Nambu-Goto strings |
| Speaker: | Jochen Zahn (Univ. Wien) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik |
| Date: | Tue, 08.10.2013 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | J. Yngvason |
| Marginally outer trapped surfaces in 5 dimensions |
| Speaker: | Walter Simon (Univ. Wien) |
| Abstract: | im Rahmen des Literaturseminars über Gravitationsphysik |
| Date: | Thu, 10.10.2013 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Seminarraum Physik, Sensengasse 8 (Erdgeschoß) |
| Contact: | H. Rumpf |
| Residual Symmetries in the Lepton Mass Matrices |
| Speaker: | Walter Grimus (Univ. Wien) |
| Abstract: | im Rahmen des Teilchenphysikseminars |
| Date: | Thu, 10.10.2013 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | H. Neufeld |
| Exploring Extensions to the Standard Model of Particle Physics with Semileptonic and Leptonic B Meson Decays |
| Speaker: | Christoph Schwanda (HEPHY) |
| Abstract: | Habilitationskolloquium |
| Date: | Fri, 11.10.2013 |
| Time: | 13:30 |
| Location: | TU Wien, Freihaus, Wiedner Hauptstr., HS 2 (2nd floor= |
| Contact: | Anton Rebhan |
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