2 research outputs found

    Entwicklung integriert-optischer Gassensoren Abschlussbericht

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    Based on integrated optical transducers, new types of gas sensors were developed. The transducers used are different types of interferometer, grid couplers and adsorption sections. Gas-sensitive coatings were developed and were intensively examined regarding sensitivity, cross-sensitivity and long-term stability. Sensors for CO_2, NH_3 and solvent vapours can be produced in this way. (orig)Auf der Basis integriert-optischer Transducer wurden neuartige Gassensoren entwickelt. Die verwendeten Transducer sind verschiedene Interferometertypen, Gitterkoppler und Absorptionsstrecken. Gassensitive Beschichtungen wurden entwickelt und hinsichtlich Empfindlichkeit, Querempfindlichkeiten und Langzeitstabilitaet intensiv untersucht. Sensoren fuer CO_2, NH_3 und Loesemitteldaempfe sind auf diesem Wege realisierbar. (orig.)Available from TIB Hannover: F94B0324 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

    Search for W ' decaying to tau lepton and neutrino in proton-proton collisions at root s=8 TeV

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    The first search for a heavy charged vector boson in the final state with a tau lepton and a neutrino is reported, using 19.7 fb(-1) of LHC data at root s = 8 TeV. A signal would appear as an excess of events with high transverse mass, where the standard model background is low. No excess is observed. Limits are set on a model in which the W' decays preferentially to fermions of the third generation. These results substantially extend previous constraints on this model. Masses below 2.0 to 2.7 TeV are excluded, depending on the model parameters. In addition, the existence of a W' boson with universal fermion couplings is excluded at 95% confidence level, for W' masses below 2.7 TeV. For further reinterpretation a model-independent limit on potential signals for various transverse mass thresholds is also presented. (C) 2016 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license
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