High energy Higgs boson production at the LHC: sensitivity to New Physics, experimental techniques and recent results

Almost fifteen years after the discovery of the Higgs boson by the ATLAS and CMS experiments at the LHC, the particle has become a tool for new discoveries. Many paths can be undertaken in this exploration. Of these, the study of the boson production at very high energies is particularly promising, but experimentally extremely demanding. This seminar will review the phenomenology of New Physics effects in Higgs boson production at high energy, in connection with Effective Field Theories, the experimental challenges and the new techniques developed by the ATLAS experiment leading to the recent evidence for Higgs production at transverse momenta in excess of 450 GeV in the bb final state. This result will be discussed and its sensitivity to new phenomena examined in relation to other measurements. The future perspectives offered by the analysis of the larger statistics from the full Run 2 and 3 data already collected and the future HiLumi LHC program will be outlined.