Description
The discovery of the Higgs boson at the LHC confirmed the validity of the Standard Model (SM) across a broad range of energies. However, the SM remains incomplete as it does not incorporate gravity, explain neutrino masses, or address dark matter, highlighting the need for a more comprehensive theory that ongoing and future accelerator-based research aims to uncover. In this regard, a new European Strategy for Particle Physics (ESPP) should be developed. This document represents the input to ESPP-2026 from researchers at institutes of the National Academy of Sciences and National Universities of Ukraine as well as members of Ukrainian scientific diaspora. The research groups in Ukraine are making innovative contributions across various areas, including the development of new detector systems and beam collimation techniques, experimental studies, the advancement of theoretical models for interpreting experimental results, and the modernization of computing and software for data analysis. They also place great emphasis on training young talented researchers, leading to the creation of various educational programs. Ukrainian researchers actively participate in LHC experiments (ALICE, LHCb, CMS), non-LHC projects (SHIP, ISOLDE), CERN R&D programs (CLIC), and international collaborations such as SuperNEMO, DUNE, Belle-II, DESY, and FAIR. In this context, the Future Circular Collider (FCC) project offers a broad energy range for exploring physics beyond the SM, ensures long-term research continuity, fosters technical innovation, and presents significant collaboration opportunities. Given this background, there is strong confidence that Ukrainian scientists will make valuable contributions to future precision measurements and searches for signatures of New Phenomena.
