Measuring the Higgs boson couplings

Abstract

Once a Higgs boson has been discovered, it is also important to know what are its properties, in particular its couplings to the other particles. At the LHC, there will be many observable channels that can be used to measure the relevant parameters. Using the SFitter framework, we project these measurements onto a weak-scale effective theory with general Higgs boson couplings. Thereby, our analysis profits from the error treatment and the parameter determination tools already used for new-physics searches. We use this to study both the individual couplings and their associated errors as well as correlations between them.