Electroweakinos in the Light of the Higgs Boson

Understand

Given the increasingly more stringent bounds on Supersymmetry (SUSY) from the LHC searches, we are motivated to explore the situation in which the only accessible SUSY states are the electroweakinos (charginos and neutralinos).

• In the minimal SUSY framework, we systematically study the three general scenarios classified by the relative size of the gaugino mass parameters M_1, M_2 and the Higgsino mass parameter \mu, with six distinctive cases, four of which would naturally result in a compressed spectrum of nearly degenerate LSPs.
• We present the relevant decay branching fractions and provide insightful understanding about the decay modes in connection with the Goldstone-boson Equivalence Theorem.
• We show the cross sections for electroweakino pair production at the LHC and ILC, and emphasize the unique signals involving the Standard Model-like Higgs boson as a new search reference.