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Multi-particle scattering amplitudes for precision collider physics

Objective

Scattering amplitudes determine the probability of interactions between fundamental particles. They are essential ingredients for phenomenological predictions in high-energy physics. Experiments at modern colliders, such as the Large Hadron Collider (LHC) at CERN, are probing fundamental interactions at previously unexplored scales of energy. The high energy involved in these interactions is responsible for the production of many particles in the final state, which needs to be theoretically understood with high accuracy in order to make the most out of experimental data. The goal of this research project is the analytic calculation of multi-particle scattering amplitudes at higher orders in perturbation theory, and in particular the two-loop five-point amplitudes in quantum chromodynamics, needed for theoretical predictions at next-to-next-to-leading order in perturbation theory. These are of great relevance for LHC phenomenology, since our success in finding new physics can depend on our capability of distinguishing its effects from the large QCD background of multi-particle processes, which needs to be known with high precision. The method used for the calculation builds upon state-of-the-art techniques, such as multi-loop integrand reduction and generalized unitarity. These techniques exploit the knowledge of the universal analytic and algebraic structure of amplitudes, and are suited for handling the complexity of multi-particle calculations. The technologies and tools which will be developed for this project are very general and will thus provide a framework useful for future precision calculations, opening up a new frontier for high-precision multi-particle theoretical predictions for collider experiments.

Fields of science (EuroSciVoc)

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Programme(s)

Multi-annual funding programmes that define the EU’s priorities for research and innovation.

Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

MSCA-IF-EF-ST - Standard EF

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Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

(opens in new window) H2020-MSCA-IF-2016

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Coordinator

UNIVERSITAT ZURICH
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 175 419,60
Address
RAMISTRASSE 71
8006 Zurich
Switzerland

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Region
Schweiz/Suisse/Svizzera Zürich Zürich
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 175 419,60
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