JetDynamics aims to bring together new ideas in theoretical physics, mathematics and computer technologies to make the most precise predictions for modern collider experiments at CERN's Large Hadron Collider. The aim is for a radical breakthrough in the precision that can be obtained an enable deeper probes into fundamental forces of nature.
The Standard Model of fundamental interactions continues to baffle high energy physicists. There is increasing evidence of physical phenomena that cannot be explained by this theory that describes smallest scale physics we can currently probe. Cosmological and astrophysical experiments have reliable data supporting ideas like Dark Matter and Dark Energy that are not part of the Standard Model. There is also Gravity which has a negligible effect at the small scales of collider experiments but cannot be included in the mathematical framework of the Standard Model - Quantum Field Theory. As a result, as we probe the SM at colliders at higher and higher energies and with greater precision, we are expecting to see deviations from the Standard Model's predictions. So far no significant deviations have been seen.
Quantum field theory is a complicated theoretical environment and it is remarkably difficult to make concrete predictions with it. Probing fundamental particles at high energies allows us to obtain the high resolution image of the fundamental image and our theoretical predictions must also obtain this level of resolution if we hope to learn about the nature of our models. Hadron colliders are notoriously complicated environments with a lot of different elements. In this project we focus on the highest energy interactions where we apply a valid perturbation theory and make direct connections with scattering amplitudes. The nature of quantum field theory means that higher resolution also means larger numbers of particles. Out project targets a new class of processes which our both high order in perturbation theory as well as involving a high number of particles. To go beyond the state-of-the-art we need to looks at 2->3 scattering problems.
The aim of our project is to develop new computational frameworks and build a complete chain of tools able to make NNLO predictions for 2->3 scattering problems at the LHC. This is not a simple task and our team find innovative solutions to the large number of hurdles that stand in the way of achieving this.
Aim 1: To find a way to break through the complexity barrier of the high multiplicity two-loop amplitude computations and provide the missing NNLO ingredients in a form suitable for use in experimental analyses.
Aim 2: To combine tree-level, one-loop and two-loop amplitudes to cancel the intricate structure of infrared divergences and make differential NNLO predictions that can be compared with experiments.
Aim 3: To look beyond NNLO and make steps towards 1% level perturbative precision for 2->2 scattering.
If successful, our research program will result in a deeper understanding of the strong interaction and improved measurements of the fundamental parameters of the Standard Model
