BOUNDING THE ELECTROMAGNETIC AND WEAK DIPOLE MOMENTS OF THE TAU-LEPTON IN A SIMPLEST LITTLE HIGGS MODEL

作者：Gutierrez Rodriguez A^*

来源：Modern Physics Letters A, 2010, 25(9): 703-713.

DOI：10.1142/S0217732310032238

• Electric and magnetic moments
• tatus
• neutral currents
• models beyond the standard model

From the total cross-section for the reaction e(+)e(-) -> tau(+)tau(-) at the Z(1) pole and in the framework of a simplest little Higgs model (SLHM), we get a limit on the characteristic energy scale of the model f, f >= 5.4 TeV, which in turn induces bounds on the electromagnetic and weak dipole moments of the taulepton. Our bounds on the electromagnetic moments are consistent with the bounds obtained by the L3 and OPAL collaborations for the reaction e(+)e(-) -> tau(+)tau(-)gamma. We also obtained bounds on the tau weak dipole moments which are consistent with the bounds obtained recently by the DELPHI and ALEPH collaborations from the reaction e(+)e(-) -> tau(+)tau(-).

• 出版日期2010-3-21