Superpartner

Supersymmetric ( SUSY ) theories of elementary particle physics say for each existing elementary particles requires the existence of at least one Partnerteilchens (super partner or Steilchens ), which - with the exception of the spin - has exactly the same quantum numbers.

The spin of the supersymmetric partner is A., lower by ½, ie the bosons ( integer spin) and fermions ( half-integer spin) each supersymmetric partner of the other particle are assigned.

Use of the term

The term super affiliates in the plural refers either to a lot of particles that each partner particles are, or 'normal' to the partner of the singular particles (also known in English Sparticle ).

As a "normal" particles in this sense (or "standard model -like ' " particles, because they are not caused by supersymmetry transformations ) are:

• All particles ( and antiparticles ) of the Standard Model of particle physics (SM). This includes all previously experimentally proven fundamental elementary particles and the (2013 ) is not yet unequivocally detected Higgs boson.
• Additional Higgs fields that are required by SUSY theories such as the minimal supersymmetric standard model
• The hypothetical graviton.

For these particles, the R - parity 1, -1 for their superpartners.

Naming

• The super partner of a boson (whether particles or field) - a supersymmetric fermion - ie Bosino, the name ends in- ino (possibly instead of -one).
• The super partner of a fermion - a supersymmetric boson - ie Sfermion, in the name is an S- prefixed.
• Neutrinos are despite their name, no superparticle, but 'normal' fermions, their super partners are the Sneutrinos.

Mass

In the standard model no particles or fields exist that are mutually super affiliates. If super affiliates from elementary particles actually exist in nature, so it is assumed that they have a large mass and that supersymmetry in this previously at particle accelerators experimentally accessible energy is a broken symmetry.