About the Lab
Matthias Steinhauser’s lab focuses on precision theoretical calculations in particle physics, with a strong emphasis on quantum chromodynamics (QCD) and its applications to collider and flavor physics. The central goal of the research is to provide highly accurate Standard Model predictions that are essential for interpreting experimental results and for uncovering possible signs of new physics.
The lab specializes in multi-loop perturbative calculations, often at next-to-next-to-leading order (NNLO) and beyond. Core methods include asymptotic expansions, effective field theories, master-integral techniques, and advanced computer-algebra tools. A significant part of the work involves developing and using flexible numerical libraries, such as C++ frameworks, that allow fast and precise evaluations of cross sections and decay rates under varying theoretical assumptions.
Key application areas include Higgs boson production (single and pair production), top-quark and toponium physics, and heavy-flavor observables such as B-meson mixing and lifetimes. These results directly support analyses at the Large Hadron Collider and contribute to global efforts to test the Standard Model at the highest possible precision.
The lab is an excellent fit for students with strong interests in theoretical physics, quantum field theory, and advanced mathematics. Ideal candidates enjoy analytical problem solving, programming, and working at the interface between theory and experiment, aiming to deepen our understanding of fundamental interactions.