particle physics Particle physics or high energy physics is the study of fundamental particles and forces that constitute matter and radiation. The fundamental particles in the universe are classified in the Standard Model as fermions (matter particles) an ...

, the chargino is a hypothetical particle which refers to the mass eigenstates of a charged

superpartner 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. ...

, i.e. any new electrically charged fermion (with spin 1/2) predicted by supersymmetry. They are linear combinations of the charged

wino Wino may refer to: * WINO (band), a Japanese rock band * WINO (FM), a radio station (91.9 FM) licensed to serve Wakins Glen, New York, United States * WRFI (FM), a radio station (89.7 FM) licensed to serve Odessa, New York, which held the call ...

and charged

higgsino In particle physics, for models with N=1 supersymmetry a higgsino, symbol , is the superpartner of the Higgs field. A higgsino is a Dirac fermionic field with spin and it refers to a weak isodoublet with hypercharge half under the Standard Mo ...

s. There are two charginos that are fermions and are electrically charged, which are typically labeled (the lightest) and (the heaviest), although sometimes

\tilde_1^\pm

and

\tilde_2^\pm

are also used to refer to charginos, when

\tilde_i^0

is used to refer to

neutralino In supersymmetry, the neutralino is a hypothetical particle. In the Minimal Supersymmetric Standard Model (MSSM), a popular model of realization of supersymmetry at a low energy, there are four neutralinos that are fermions and are electrically ...

s. The heavier chargino can decay through the neutral Z boson to the lighter chargino. Both can decay through a charged W boson to a neutralino: : → + : → + : → +

References

External links

* http://lepsusy.web.cern.ch/lepsusy/www/inoslowdmsummer02/charginolowdm_pub.html * Supersymmetric quantum field theory Hypothetical elementary particles {{particle-stub

See also

References

External links