How charming is the Higgs boson? Probing the Higgs-charm coupling.

• Hannah Arnold (Nikhef)

Room: Graduate Building D-122 One intriguing puzzle of Nature is the existence of three generations of fermions with largely identical properties except for their masses. Moreover, it remains a mystery why the masses span several orders of magnitude while following a curious pattern. Since the Higgs-boson discovery 10 years ago Yukawa couplings have been probed as the origin of the fermion masses. So far, only for the 3rd and heaviest generation of fermions, Yukawa couplings are firmly established. Higgs-boson couplings to the lighter generations are fairly unexplored, due to significantly greater experimental challenges. However, to determine whether the same mechanism is responsible for the masses of all three fermion generations, it is essential to probe the Yukawa couplings of 1st and 2nd generation fermions as well. I will cover the current front line of this research, probing the Higgs coupling to charm quarks. I will present the latest results of the ATLAS experiment at the LHC, and discuss the future prospects.