The 2020 update of the European strategy for particle physics (ESPPU), which was released during the 199th session of the CERN Council, sets out an ambitious programme to carry the field deep into the 21st century. Following two years of discussion and consultation with particle physicists in Europe and beyond, the ESPPU has identified an electron–positron collider as the highest priority after the HL-LHC and includes exploration of the flavour puzzle and the neutrino sector as other avenues of progress. To prepare for the longer term, the ESPPU prioritises the technical and financial feasibility of a future proton–proton collider at CERN with a centre-of-mass energy of at least 100 TeV.
This strategy document is important to set the future direction of the research community and, crucially, also the role of CERN and of particle physics in the European landscape of scientific collaboration. The Portuguese scientific community connected to CERN spans experimental and theoretical activity in particle physics, nuclear physics, material science and the application of related technology to societal goals. The purpose of this workshop is to bring the community together to reflect on the future of these interrelated areas in Portugal and in the global stage.