Determining the CP parity of Higgs bosons via their tau decay channels at the Large Hadron Collider.
If neutral Higgs bosons are discovered at the CERN Large Hadron Collider (LHC), then an important subsequent issue will be the investigation of their CP nature. Higgs boson decays into tau lepton pairs are particularly suited in this respect. By analyzing the three charged pion decay modes of the tau leptons and taking expected measurement uncertainties at the LHC into account, we show that the CP properties of a Higgs boson can be pinned down with appropriately chosen observables, provided that sufficiently large event numbers will eventually be available.
Institut für Theoretische Physik, RWTH Aachen, 52056 Aachen, Germany. berge@physik.rwth-aachen.de
Stefan
S
Berge
Werner
W
Bernreuther
Jörg
J
Ziethe