Physics: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[math]\displaystyle{ \tilde \chi }[/math]±1 (the lightest) and C[math]\displaystyle{ \tilde \chi }[/math]±2 (the heaviest), although sometimes [math]\displaystyle{ \tilde{\chi}_1^\pm }[/math] and [math]\displaystyle{ \tilde{\chi}_2^\pm }[/math] are also used to refer to charginos, when [math]\displaystyle{ \tilde{\chi}_i^0 }[/math] 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[math]\displaystyle{ \tilde \chi }[/math]±2 → C[math]\displaystyle{ \tilde \chi }[/math]±1 + Z⁰

C[math]\displaystyle{ \tilde \chi }[/math]±2 → N͂02 + W^±

C[math]\displaystyle{ \tilde \chi }[/math]±1 → N͂01 + W^±

See also

• List of hypothetical particles
• Weakly interacting slender particle

External links

• http://lepsusy.web.cern.ch/lepsusy/www/inoslowdmsummer02/charginolowdm_pub.html
• Alloul, Adam; Frank, Mariana; Fuks, Benjamin; De Traubenberg, Michel Rausch (2013). "Chargino and neutralino production at the Large Hadron Collider in left-right supersymmetric models". Journal of High Energy Physics 2013 (10): 033. doi:10.1007/JHEP10(2013)033. Bibcode: 2013JHEP...10..033A.