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Lepton logistics4/29/2023 It is clear that this specific search would significantly benefit from increasing the center-of-mass energy. ![]() The study in exploits these characteristics to isolate the BSM δ y q induced signals from the background. The main features of the BSM δ y q signal are the growing with energy of the cross section, but also a peculiar final state, characterized by the hard emission of gauge bosons and by distinctive angular distributions. This shows the LHC potential to further probe this channel. Interestingly, the triboson production was recently measured for the first time at the LHC by CMS. The current best constraints are placed by considering global fits to the Higgs strength, which is modified by shifts on the quark Yukawas ( δ y q): These are extremely difficult measurements but several techniques, which we are going to review, were recently developed to improve the detectability of the Higgs couplings to light quarks and to set bounds on possible deviations induced by physics beyond the SM. Crucial indication on the Higgs role in the mass generation of 1st and 2nd families would come from the challenging measurement of the light quark Yukawas. There was recently the first evidence for Higgs decay to muons, which represents the first probe of the Higgs interaction with the second generation of fermions and could give hints on scenarios beyond the SM (BSM). The corresponding Yukawa couplings are measured with an accuracy of the order of 10%. ATLAS ( Figure 1) and CMS measurements so far have given firm evidence of Higgs interactions to top, bottom and tau. The investigation of the properties of the Higgs, including its interactions, and in general of the EWSB sector is the primary objective of the LHC, which is approaching the upgrade to its high luminosity phase (HL-LHC), as well as that of future planned experiments at the energy frontiers, e.g., the FCC, the ILC or a multi-TeV muon collider. However, it leaves us with unresolved questions in the standard model (SM), above all the non-explanation of the origin of the EWSB, the precarious nature of the associated potential, the unknown origin of the neutrino masses, the Higgs naturalness problem and the mysterious pattern of Yukawa couplings. ![]() The discovery of the Higgs boson at CERN 10 years ago marked a breakthrough in our understanding of the physics of fundamental interactions, confirming the existence of the Brout–Englert–Higgs mechanism for the electroweak symmetry breaking (EWSB).
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