Effects of anomalous couplings of the tau lepton
| dc.creator | Huang, T. | |
| dc.creator | Lin, Z. -H. | |
| dc.creator | Zhang, X. | |
| dc.date | 2000-09-29 | |
| dc.date.accessioned | 2026-07-07T03:42:49Z | |
| dc.date.available | 2026-07-07T03:42:49Z | |
| dc.description | The dimension-six CP-conserving $SU_L(2)\times U_Y(1)$ invariant operators involving the tau lepton are studied. It leads to the new physics effects to the lepton flavor violation (LFV) and lepton flavor-changing neutral current(FCNC). With the available experimental data on the decays $Z \to τ^+ + τ^- $, $Z\to μ^+ + μ^- $ and $μ^- \to e^- +γ$, the constraints on parameters of the effective lagrangian can be given. According to such constraints, the branching ratio of the decay $Z\to μ^\pm + τ^\mp $ could reach to $10^{-6}-10^{-7}$. The size of the LFV effects depends crucially on the dynamics of the lepton mass generation. Assuming the lepton mass matrices in the form of a Fritzsch ansatz, we point out that the experiment on $μ\to e γ$ will put stronger limits on the anomalous magnitic and electric dipole moments of the tau lepton than obtained by Escribano and Massó. | |
| dc.description | 13 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0009353 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0009353 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/40020 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Effects of anomalous couplings of the tau lepton | |
| dc.type | text |