neutralino
Sign in to saveIn 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 neutral, the lightest of which is stable in an R-parity conserved scenario of MSSM. They are typically labeled (the lightest), , and (the heaviest) although sometimes \tilde{\chi}_1^0, \ldots, \tilde{\chi}_4^0 is also used when \tilde{\chi}_i^\pm is used to refer to charginos.
Key facts
- Particle.name
- Neutralino
- Particle.num_types
- 4
- Particle.antiparticle
- self (truly neutral particle)
- Particle.status
- Hypothetical
- Particle.symbol
- , , ,
- Particle.mass
- > 300 GeV
- Particle.electric_charge
- 0
- Particle.lepton_number
- 0
- Particle.baryon_number
- 0
- Particle.r_parity
- −1
via Wikipedia infobox
~5 min read
Encyclopedic overview
6 sectionsContents
- Expected behavior
- Origins in supersymmetric theories
- Phenomenology
- Relationship to dark matter
- See also
- References
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 neutral, the lightest of which is stable in an R-parity conserved scenario of MSSM. They are typically labeled (the lightest), , and (the heaviest) although sometimes \tilde{\chi}_1^0, \ldots, \tilde{\chi}_4^0 is also used when \tilde{\chi}_i^\pm is used to refer to charginos.
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.
Excerpted from Wikipedia’s “neutralino” article, available under the CC BY-SA 4.0 licence.