In particle physics, a superpartner (also sparticle) is a class of hypothetical elementary particles predicted by supersymmetry, which, among other applications, is one of the well-studied ways to extend the standard model of high-energy physics.
[1][2] When considering extensions of the Standard Model, the s- prefix from sparticle is used to form names of superpartners of the Standard Model fermions (sfermions),[3] e.g. the stop squark.
Exact unbroken supersymmetry would predict that a particle and its superpartners would have the same mass.
If superpartners are found, their masses would indicate the scale at which supersymmetry is broken.
[1] Some researchers have hoped the Large Hadron Collider at CERN might produce evidence for the existence of superpartner particles.