Collider Physics Group
ATLAS and CMS observe simultaneous production of four top quarks
March 28, 2023
The ATLAS and CMS collaborations have observed the simultaneous production of four top quarks, the heaviest elementary particle, in collisions at the world's largest particle accelerator, located at CERN. The Institut de Física d'Altes Energies (IFAE) plays a prominent role in the observation of this rare phenomenon that could be key to searching for new particles beyond the Standard Model.
The Higgs boson, ten years after its discovery
July 4, 2022
The landmark discovery of the Higgs boson at the LHC exactly ten years ago, and the progress made since then to determine its properties, have allowed physicists to make tremendous steps forward in our understanding of the universe. The Collider Physics Group at IFAE joined the ATLAS collaboration since its inception. For 30 years it has contributed to the design and construction of the experiment and the physics analysis program.