Chargino

In particle physics, the chargino is a hypothetical particle which refers to the mass eigenstates of a charged superpartner, i.e. any new electrically charged fermion (with spin 1/2) predicted by supersymmetry. They are linear combinations of the charged wino and charged higgsinos. There are two charginos that are fermions and are electrically charged, which are typically labeled C$\tilde \chi$±
1 (the lightest) and C$\tilde \chi$±
2 (the heaviest) although sometimes $\tilde{\chi}_1^\pm$ and $\tilde{\chi}_2^\pm$ is also used to refer to charginos, when $\tilde{\chi}_i^0$ is used to refer to neutralinos. 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:

C$\tilde \chi$±
2 → C$\tilde \chi$±
1 + Z0

C$\tilde \chi$±
2 → N͂0
2 + W±

C$\tilde \chi$±
1 → N͂0
1 + W±

External links

• http://lepsusy.web.cern.ch/lepsusy/www/inoslowdmsummer02/charginolowdm_pub.html
• http://arxiv.org/abs/1307.5073