CT1: Leptonic flavour violation
Standard model prediction of flavour violating observables in the lepton sector extended by a sector to generate neutrino masses are more than 40 orders of magnitude less than recent experimental upper limits for these observables. In addition, leptonic flavour violation can be measuren in experiment at relatively low energies and, hence, a significant improvement of the experimental situation can be expected for the near future. Joining these facts make lepton flavour violation to an important tool for the analysis of new physics models beyond the standard model. Although not flavour violating one should consider the anomalous magnetic moment of the myon which has been measured to remarkable precision. A first complete analysis of the lepton sector of the littlest Higgs model with T parity [1] could show how one can use correlations [2] between decay amplitudes to distinguish this model from a minimal supersymmetric standard model (MSSM). In few of the expected tremendous progress on the experimental side it is indispensible to continue the scrutiny of this model and to extend it to other models, for example models with additional spatial dimensions and non-factorizable metric.
References:
Standard model prediction of flavour violating observables in the lepton sector extended by a sector to generate neutrino masses are more than 40 orders of magnitude less than recent experimental upper limits for these observables. In addition, leptonic flavour violation can be measuren in experiment at relatively low energies and, hence, a significant improvement of the experimental situation can be expected for the near future. Joining these facts make lepton flavour violation to an important tool for the analysis of new physics models beyond the standard model. Although not flavour violating one should consider the anomalous magnetic moment of the myon which has been measured to remarkable precision. A first complete analysis of the lepton sector of the littlest Higgs model with T parity [1] could show how one can use correlations [2] between decay amplitudes to distinguish this model from a minimal supersymmetric standard model (MSSM). In few of the expected tremendous progress on the experimental side it is indispensible to continue the scrutiny of this model and to extend it to other models, for example models with additional spatial dimensions and non-factorizable metric.
References:
- M. Blanke, A. J. Buras, B. Duling, A. Poschenrieder, and C. Tarantino,
JHEP 05, 013 (2007), hep-ph/0702136. - J.R. Ellis, J. Hisano, M. Raidal, and Y. Shimizu,
Phys. Rev. D66 (2002) 115013, hep-ph/0206110.
