Supersymmetric Custodial Triplets

Understand

We analyze the extension of the Minimal Supersymmetric Standard Model which includes extra Y=(0,\pm 1) supersymmetric triplets with a global SU(2)_L \otimes SU(2)_R symmetry spontaneousy broken to the custodial SU(2)_V by the vacuum expectation value of the neutral scalar components of doublets and triplets.

• The model is the supersymmetrization of the non-supersymmetric model introduced long ago by Georgi and Machacek where the \rho-parameter is kept to unity at the tree-level by the custodial symmetry.
• Accordingly the scalar sector is classified into degenerate SU(2)_V multiplets: singlets, triplets (including the one containing the Godstone bosons) and fiveplets.
• The singly and doubly charged chiral superfields play a key role in the unitarization of the theory.