Description du projet
Des prévisions théoriques plus précises sur l’évolution multi-échelle des événements du collisionneur
Le Grand collisionneur de hadrons (LHC), un anneau de 27 kilomètres d’aimants supraconducteurs, est le plus grand et le plus puissant accélérateur de particules au monde. Deux faisceaux de particules de haute énergie circulant dans des directions opposées s’y heurtent à une vitesse proche de celle de la lumière. La recherche fondamentale sur les observables critiques dans les domaines de la physique du Higgs et des jets dépend des calculs théoriques décrivant l’évolution du système. Le projet JANUS, financé par le CER, améliorera la précision de ces calculs en établissant des connexions entre deux domaines importants, les techniques de resommation et les générateurs d’événements de Monte Carlo à douche parton, des programmes informatiques qui simulent les états finaux des collisions à haute énergie jusqu’au niveau des particules stables individuelles.
Objectif
For the decades to come, the pioneering investigation of the fundamental laws of nature at the Large Hadron Collider (LHC) and at future collider experiments will rely on the interpretation of complex scattering events by means of accurate theoretical calculations, which are instrumental to find small signals of elusive new phenomena. These calculations must describe the evolution of the system from the few particles produced in the high-energy scattering to the tens or hundreds of low-energy particles observed in the detectors. This proposal aims at transforming the core of our theoretical understanding of such a multi-scale evolution, which nowadays is often too inaccurate to cope with the striking experimental precision. The goal of JANUS is to develop innovative ideas and theoretical methods to advance significantly both approaches to the problem: Resummations and Parton-Shower-Monte-Carlo (PSMC) generators. JANUS will establish a deep connection between the two fields, resulting in novel technology for the accurate modelling of multi-scale effects. Its main objectives are:
- To formulate new theoretical methods to tackle the resummation of complex collider observables in reactions with more than two emitters and scales with state-of-the-art accuracy.
- To lay the theoretical foundations for a new generation of PSMC algorithms, capable of describing accurately the hard scattering and subsequent parton-shower evolution for reactions with different jet multiplicities with a new standard of precision.
This technology will be applied to obtain state-of-the-art theoretical predictions for a broad range of critical observables in the important fields of Higgs and jet physics, enabling their optimal exploration at the LHC and future collider experiments.
Champ scientifique
- natural sciencesphysical sciencestheoretical physicsparticle physicsparticle accelerator
- natural sciencesmathematicsapplied mathematicsstatistics and probability
- natural sciencescomputer and information sciencescomputational sciencemultiphysics
- natural sciencesmathematicsapplied mathematicsmathematical model
Programme(s)
- HORIZON.1.1 - European Research Council (ERC) Main Programme
Régime de financement
HORIZON-ERC - HORIZON ERC GrantsInstitution d’accueil
1211 GENEVE 23
Suisse