Technical University of Dortmund

About: Technical University of Dortmund is a education organization based out in Dortmund, Nordrhein-Westfalen, Germany. It is known for research contribution in the topics: Context (language use) & Large Hadron Collider. The organization has 13028 authors who have published 27666 publications receiving 615557 citations. The organization is also known as: Dortmund University & University of Dortmund.

A search for tt¯ resonances using lepton-plus-jets events in proton-proton collisions at s√=8 TeV with the ATLAS detector

Abstract: A search for new particles that decay into top quark pairs is reported. The search is performed with the ATLAS experiment at the LHC using an integrated luminosity of 20.3 fb(-1) of proton-proton collision data collected at a centre-of-mass energy of root s = 8TeV. The lepton-plus-jets final state is used, where the top pair decays to W (+) bW(-)(b) over bar, with one W boson decaying leptonically and the other hadronically. The invariant mass spectrum of top quark pairs is examined for local excesses or deficits that are inconsistent with the Standard Model predictions. No evidence for a top quark pair resonance is found, and 95% confidence-level limits on the production rate are determined for massive states in benchmark models. The upper limits on the cross-section times branching ratio of a narrow Z' boson decaying to top pairs range from 4.2 pb to 0.03 pb for resonance masses from 0.4 TeV to 3.0 TeV. A narrow leptophobic topcolour Z' boson with mass below 1.8 TeV is excluded. Upper limits are set on the cross-section times branching ratio for a broad colour-octet resonance with Gamma/m = 15% decaying to tt. These range from 4.8 pb to 0.03 pb for masses from 0.4 TeV to 3.0 TeV. A Kaluza-Klein excitation of the gluon in a Randall-Sundrum model is excluded for masses below 2.2 TeV.

On the theory of vortex motion in an inhomogeneous superconducting film

Abstract: A phenomenological theory is presented giving an account of the pinning effect which occurs when vortex motion in a superconducting film is hindered by inhomogeneities of the material. In particular, the theory incorporates the interaction (pinning) potential between a vortex and the material defects, as well as long wavelength distortion of the vortex lattice. A recent observation of quantum interference effects of a moving vortex lattice can be explained successfully. It is shown how the pinning potential and the elastic constants can be obtained from experiment.

Future Production Concepts in the Chemical Industry: Modular – Small‐Scale – Continuous

Abstract: Modular continuous production concepts are already successfully applied in research, development, and piloting of a series of chemical compounds in the markets of fine chemistry and pharmaceutical products. Besides, first case studies for the application of those concepts in industrial scale are reported. Current European research projects focus to proof their applicability in a broader range. The elaborated know-how will be commercially used in a franchise between BTS, INVITE, Ehrfeld Mikrotechik BTS, and further partners in the product Flonamic®. One core element of these production concepts are micro- and milli-structured devices assisting continuous-flow processes due to their superior transport characteristics and small holdup. In small-scale production concepts, these special devices have to be considered together with conventional technology. The platform concept developed by TU Dortmund University for chemical manufacturing simplifies the scale-up process from lab to container scale and beyond on different levels in flow rate, temperature, or other process conditions.