| Summary: | Leptonic tau decays are not V-A | ||
|---|---|---|---|
| Product: | Geant4 | Reporter: | dennis.herbert.wright |
| Component: | particles | Assignee: | kurasige |
| Status: | RESOLVED FIXED | ||
| Severity: | minor | ||
| Priority: | P4 | ||
| Version: | 4.0 | ||
| Hardware: | All | ||
| OS: | All | ||
G4MuonDecayChannel can not be used because muon mass can not be neglected with respect to energy of muon and tau mass. G4TauLeptonicChannel will be introduced in the next version. G4MuonDecayChannel can not be used because muon mass can not be neglected with respect to energy of muon and tau mass in the decay of tau -> mu + nu + nu. G4TauLeptonicChannel will be introduced in the next version. New class of G4TauLeptonicDecayChannel will be included in the next release. |
The tau decays tau+ -> e+ v_e v_tau_bar -> mu+ v_mu v_tau_bar tau- -> e- v_e_bar v_tau -> mu- v_mu_bar v_tau are currently described as phase space decays (G4PhaseSpaceDecayChannel) but should be V-A decays like G4MuonDecayChannel. Perhaps G4MuonDecayChannel could be generalized to accept a daughter argument and then it could be used to describe leptonic tau decays as well as mu decays.