Natural Split Mechanism for Sfermions: $N$=2 Supersymmetry in Phenomenology

Understand

We suggest a natural split mechanism for sfermions based on $N$=2 supersymmetry (SUSY).

• $N$=2 SUSY protects a sfermion in an $N$=2 multiplet from gaining weight by SUSY breaking.
• Therefore, if partly $N$=2 SUSY is effectively obtained, a split spectrum can be realized naturally.
• As an example of the natural split mechanism, we build a gauge-mediated SUSY breaking-like model assuming $N$=2 SUSY is partly broken in a UV theory.