Scalar Boson Decays to Tau Leptons: in the Standard Model and Beyond

Introduction.- Part I: Theoretical Bases.- The Standard Model of Particle Physics.- Physics Beyond the Standard Model.- Statistics.- Part II: Experimental Bases.- Experimental Setup.- Event Generation, Simulation and Reconstruction.- Tau Lepton Reconstruction and Identification.- Part III: SM Physics Analyses.- Search for the SM Scalar in the ZH `` Channel.- Search for the SM Scalar in the WH Eµ h Channel.- Combination of Searches for the SM Scalar Boson Decaying to Taus.- Part IV: BSM Physics Analyses.- Search for a Heavy Pseudoscalar Boson a Decaying to Zh in the `` final State.- Search for Exotic Decays of the SM-Like Scalar Boson in the µµ final State.- Search for a Light Pseudoscalar Decaying to Taus.- Search for a Heavy Di-Tau Resonance in the MSSM.- Part V: Status and Prospects.- Overview of LHC Results and Prospects for Future Colliders.- Conclusion.