Long-lived bino and wino in supersymmetry with heavy scalars and higgsinos

Understand

We point out that there is a parameter region in supersymmetry with heavy scalars and higgsinos, in which the heavier of bino and wino becomes long-lived as a consequence of the heavy higgsinos.

• In this region these electroweak gaugino sectors are secluded from each other with very small mixings that are inversely proportional to the higgsino mass.
• We revisit the bino and bino decays and provide simple formulae for the partial decay rates and the lifetimes in the limit of heavy higgsinos.
• We discuss the collider signatures of the long-lived binos and winos in this scenario.