Searches at ATLAS for Rare Higgs Boson Decay Modes

by Rhys Owen
(Birmingham, RAL)

Following the discovery of a Standard Model-like Higgs boson, efforts are now focusing on the full characterisation of its properties. Despite the progress made, little is still known about the Higgs boson couplings to light fermions from the first and second generations. Direct measurements of the Higgs boson couplings to light quarks are plagued by small rates in the SM making them difficult to separate from the huge hadronic backgrounds. A novel experimental way to access these couplings is provided by decays of the Higgs boson to a meson and a photon. I will discuss the status of searches with the ATLAS detector as well as prospects for future measurements.