Analysis of Higgs bosons utilizing hadronic tau decays at the CMS experiment

For many years the Higgs boson was the last undiscovered piece of the successful standard model of particle physics. It was discovered in 2012 by the ATLAS and CMS collaborations in decays to $\gamma\gamma$, $ZZ$, and $WW$. This thesis describes a search for the Higgs boson in its decay into two $\tau$ leptons. This decay is of particular interest to probe the Yukawa coupling of the Higgs boson to fermions. CMS data of the year 2012 are used, corresponding to an integrated luminosity of $19.7\,fb^{−1}$ of proton-proton collisions collected at a center-of-mass energy of $8\,TeV$. Triggers have been developed, implemented, and maintained to collect events with two hadronically decaying tau leptons in the final state. Their performance is described. Additionally, this thesis investigates Higgs boson events with a muon and a hadronic tau decay in the final state. If the tau lepton decays into three charged hadrons and a neutrino, the reconstruction of the tau decay vertex is used to suppress background and to reconstruct the kinematic properties of the event. Prospects of such methods in the context of Higgs analyses are discussed.