Location & approach

By car

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.

By bus and train

The "Dortmund Universität" S-Bahn station is located directly on the North Campus. From there, the S-Bahn line S1 runs every 15 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.

The "H-Bahn"

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.

By plane

From Dortmund Airport, the AirportExpress takes just over 20 minutes to Dortmund's main train station, and from there, the S-Bahn takes you to the university. 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.

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Location & approach

By car

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.

By bus and train

The "Dortmund Universität" S-Bahn station is located directly on the North Campus. From there, the S-Bahn line S1 runs every 15 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.

The "H-Bahn"

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.

By plane

From Dortmund Airport, the AirportExpress takes just over 20 minutes to Dortmund's main train station, and from there, the S-Bahn takes you to the university. 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.

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The non-first-order-factorizable contributions to the three-loop single-mass operator matrix elements A(3) Qg and ∆A(3) Qg

03/01/2024 -

in

Blümlein

Take a look at our new publication!

Abstract:

The non-first-order-factorizable contributions1 to the unpolarized and polarized massive
operator matrix elements to three-loop order, A(3)
Qg and ∆A(3)
Qg, are calculated in the single-
mass case. For the 2F1-related master integrals of the problem, we use a semi-analytic
method based on series expansions and utilize the first-order differential equations for the
master integrals which does not need a special basis of the master integrals. Due to the
singularity structure of this basis a part of the integrals has to be computed to O(ε5) in
the dimensional parameter. The solutions have to be matched at a series of thresholds and
pseudo-thresholds in the region of the Bjorken variable x ∈]0, ∞[ using highly precise series
expansions to obtain the imaginary part of the physical amplitude for x ∈]0, 1] at a high
relative accuracy. We compare the present results both with previous analytic results, the
results for fixed Mellin moments, and a prediction in the small-x region. We also derive
expansions in the region of small and large values of x. With this paper, all three-loop
single-mass unpolarized and polarized operator matrix elements are calculated.

Link to the paper:

https://arxiv.org/pdf/2403.00513