Speaker
Description
Top Yukawa coupling is deeply connected to many fundamental puzzles in Higgs and Electroweak physics. In this study, we seek to measure the Top Yukawa coupling at the future high-energy muon colliders utilizing the Higgs unitarization in the $V_L V_L \rightarrow t\bar{t} $ process. If the Top Yukawa coupling
deviates from the Standard Model (SM) value, the amplitude of the
processes with gauge bosons and top quarks $V V \rightarrow t\bar{t}$ will be increasing and it will deviate from the SM rate as a function of the $t\bar{t}$ center of mass energy. We show that using a muon collider with 10TeV energy and 10ab$^{-1}$ integrated luminosity, the collider can probe the Top Yukawa with a precision better than 1.5%. This is a significant improvement from the projected high-luminosity LHC (HL-LHC) limit of 3.2% and the $t\bar t H$ process sensitivity at muon colliders.
