Phenomenology of fundamental interactions

Our current understanding of high-energy physics is encapsulated in the Standard Model (SM) of fundamental interactions, which describes both the strong (QCD) and electroweak forces. The SM is a highly successful theory, with its predictions confirmed to remarkable precision by a wide range of experiments, such as those currently conducted at CERN. Nevertheless, many key questions remain unanswered, including the dynamics of strong interactions under extreme conditions and the nature of new physics beyond the SM. Our group's research addresses several of these topics, focusing on:

Precision physics at colliders, through advanced theoretical calculations (NNLO corrections, electroweak effects, etc.) to identify potential deviations from the SM. 

Effective field theories, which parameterize possible indirect signals of new physics in experimental data, and allow for their interpretation in terms of models beyond the SM.

Scattering amplitudes, by developing innovative methods for computing loop integrals and amplitudes, applicable across various physical contexts, including QCD in extreme regimes.

Nuclear strong interactions, by studying elastic and quasi-elastic scattering reactions to determine the structure of finite nuclei using different mathematical approaches, and investigating nuclear superconductivity.

Scattering amplitudes

We develop cutting-edge methods for the study and calculation of loop integrals and scattering amplitudes in quantum field theory. These rely on advanced mathematical and computational techniques such as modern methods for linear reduction, differential equations, the study of special functions, finite fields and functional reconstruction techniques. We combine these with approaches that exploit important physical and mathematical properties of amplitudes and loop integrals, such as unitarity, integrand reduction and physical projectors. These methods can be applied to the study of a broad range of physical problems, such as interactions of the Standard Model, its extensions, gravity and classical observables.  In particular,  in hadronic processes we study hard and semi-hard processes in  the Regge regime, which allows to organise the contributions through BKFL-type of resummations and  to explore properties of QCD in extreme situations, such as those characterized by  high partonic densities.