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Dr. Chris Malena Delitzsch

Department of Physics
Otto-Hahn-Str. 4a
44227 Dortmund

Room: CP-03-134
E-Mail: chris.delitzschtu-dortmundde
Tel.: +49 (0)231 755-3501

Portrait of Chris Malena Delitzsch © Felix Schmale​/​TU Dortmund

Secretariat

"Our group focusses on the reconstruction and analysis of events with hadronic final states that are recorded by the ATLAS experiment at the Large Hadron Collider (LHC) to test the predictions of the Standard Model with high precision. The measurement of the coupling of the Higgs Boson and the top quark, the heaviest particle in the Standard Model, is of special interest as deviations from the predictions can hint at new physics that is out of reach at the LHC via direct searches. Our group measures the top-Higgs coupling in thus far unexplored regions of phase space using jets with high energies in order to be sensitive to small deviations. Jets are cones of particles used as proxy to reconstruct the hadronic signature of quarks and gluons. We use jets with high energies to be able to suppress the background that is significantly larger than the signal by studying their inner structure, also referred to as jet substructure. The energy distribution within the jet can be used amongst others to infer the jet's origin. This requires however a precise resolution of the energy deposits within the jet which is challenging due to the high collision rate at the LHC resulting in overlapping calorimeter signals from different interactions. Our group focusses on the development of new algorithms based on machine learning techniques to improve the reconstruction of calorimeter signals especially in light of the High-Luminosity LHC."

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Location & approach

The campus of the Technical University of Dortmund is located near the freeway junction Dortmund West, where the Sauerland line A45 crosses the Ruhr expressway B1/A40. The Dortmund-Eichlinghofen exit on the A45 leads to the South Campus, the Dortmund-Dorstfeld exit on the A40 leads to the North Campus. The university is signposted at both exits.

The "Dortmund Universität" S-Bahn station is located directly on the North Campus. From there, the S-Bahn line S1 runs every 20 or 30 minutes to Dortmund main station and in the opposite direction to Düsseldorf main station via Bochum, Essen and Duisburg. In addition, the university can be reached by bus lines 445, 447 and 462. Timetable information can be found on the homepage of the Rhine-Ruhr transport association, and DSW21 also offer an interactive route network map.

 

 

One of the landmarks of the TU Dortmund is the H-Bahn. Line 1 runs every 10 minutes between Dortmund Eichlinghofen and the Technology Center via Campus South and Dortmund University S, while Line 2 commutes every 5 minutes between Campus North and Campus South. It covers this distance in two minutes.

 

 

From Dortmund Airport, it takes just over 20 minutes to get to Dortmund Central Station by AirportExpress and from there to the university by S-Bahn. A wider range of international flight connections is offered by Düsseldorf Airport, about 60 kilometers away, which can be reached directly by S-Bahn from the university's train station.

Interactive map

The facilities of TU Dortmund University are spread over two campuses, the larger Campus North and the smaller Campus South. Additionally, some areas of the university are located in the adjacent "Technologiepark".

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