Electroweak and Flavour Structure of a Warped Extra Dimension with Custodial Protection

Understand

We present the electroweak and flavour structure of a model with a warped extra dimension and the bulk gauge group SU(3) x SU(2)_L x SU(2)_R x P_LR x U(1)_X.

• The presence of SU(2)_R implies an unbroken custodial symmetry in the Higgs system allowing to eliminate large contributions to the T parameter, whereas the P_LR symmetry and the enlarged fermion representations provide a custodial symmetry for flavour diagonal and flavour changing couplings of the SM Z boson to left-handed down-type quarks.
• We diagonalise analytically the mass matrices of charged and neutral gauge bosons including the first KK modes.
• We present the mass matrices for quarks including heavy KK modes and discuss the neutral and charged currents involving light and heavy fields.