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Friday, September 17, 2021

09-17-2021-0140 - Neutralino

In supersymmetry, the neutralino[1]: 71–74 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 neutral, the lightest of which is stable in an R-parity conserved scenario of MSSM. They are typically labeled 
0
1
 (the lightest), 
0
2

0
3
 and 
0
4
 (the heaviest) although sometimes  is also used when  is used to refer to charginos.

(In this article, 
±
1
 
is used for chargino #1, etc.) 

These four states are composites of the bino and the neutral wino (which are the neutral electroweak gauginos), and the neutral higgsinos. As the neutralinos are Majorana fermions, each of them is identical to its antiparticle.

https://en.wikipedia.org/wiki/Neutralino


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