Information AboutNeutralino |
| CATEGORIES ABOUT NEUTRALINO | |
| dark matter | |
| fermions | |
| supersymmetry | |
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Since the superpartners of the Z Boson ( Zino ), the Photon ( Photino ) and the Neutral Higgs ( Higgsino ) have the same Quantum Number s, they Mix to form Eigenstate s of the mass operator, called neutralinos. The lightest neutralino is thought to be stable unless the gravitino is lighter or R-parity is not conserved. Virtually undetectable, it participates only in Weak and Gravitational interactions. If the neutralino is stable it will always escape a particle detector. Therefore its production inside the detector, through a known initial state (e.g. proton-proton collision), should be accompanied with large missing energy and momentum from the visible final state particles. This is important signature to discriminate it from Standard Model backgrounds. Of the weakly-interacting massive particles ( WIMP s) under consideration, a lightest neutralino of 30-5000 GeV is the leading candidate for Cold Dark Matter . The exact behaviour of this particle will depend on the dominant constituent: the higgsino, the photino or the zino. SEE ALSO |
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