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Third-party-funded project

Electroweak NLO corrections for LHC processes without Feynman diagrams

Project management at the University of Würzburg:

Participating scientists:

Since spring 2010 the Large Hadron Collider (LHC) delivers proton proton collisions at an energy of 7 TeV. In order to analyse the collected data adequate theoretical predictions are mandatory. This allows to further verify the Standard Model of particle physics or to discover new phenomena. The goal of this project is to develop and apply improved methods for the required theoretical calculations.

Predictions for hadron-collider processes are obtained within perturbation theory. The leading approximation suffers from large uncertainties, and sensible predictions require at least the calculation of the next-to-leading corrections. While for the most part corrections of the strong interaction yield the dominant effects, for many reactions, in particular those with large cross sections or at high energies, also electroweak corrections are needed. Many interesting LHC processes comprise many external particles, thus complicating the calculation of perturbative corrections. Therefore, new recursive methods have been developed in recent years. These have been established for the leading order and the next-to-leading order in the strong interaction. Our goal is to devise recursive methods that are numerically stable and efficient also for the calculation of electroweak corrections und to apply them in phenomenologically relevant calculations.

Key words:
    elementary particle physics
    quantum field theory
    Standard Model
    quantum chromo dynamics
    electroweak interaction
    Glashow Salam Weinberg theory
    perturbation theory
    collider physics

Projekt period: from 11.2012 to 06.2016

Funding institution:
DFG ,Granting date: 20/01/2012


Theoretical Physics II
Ansgar Denner