Institut für Physik
Dienstag, den 06.11.2018
um 14:30 Uhr s.t. im MITP seminar room
Gabor Somogyi, University of Debrecen
The excellent performance of the LHC experiments and the wealth of precise data they deliver requires that the challenge of high precision also be addressed in the theory calculations used to describe the measurements. One aspect of theoretical precision is related to the computation of exact higher order corrections to physical observables in QCD perturbation theory. As the mass production of two-loop amplitudes is becoming a reality, frameworks and tools to organize computations at next-to-next-to-leading order (NNLO) accuracy must also be developed. In the talk I will present the CoLoRFulNNLO method for calculating fully differential predictions at NNLO in QCD. After addressing the key conceptual issues which arise in the construction of the method, I will discuss the status of extending the scheme to deal with initial state radiation, pointing out some technical issues specific to this approach which must be addressed. I will also show some applications of the CoLoRFulNNLO framework, in particular, I will discuss a new measurement of the strong coupling from measurements of energy-energy correlation in electron-positron collisions, as well as a full NNLO computation of the associated production of a Higgs boson decaying into bottom quarks at the LHC.