In theparticle physics theory ofsupersymmetry, agluino (symbolg͂) is the hypotheticalsupersymmetric partner of agluon.

In supersymmetric theories, gluinos areMajorana fermions and interact via thestrong force as a color octet.^[1] Gluinos have alepton number 0,baryon number 0, andspin 1/2.

Experimentally, gluinos have been one of the most promising SUSY particle candidates to be discovered since the production cross-section is the highest among SUSYs in the energy-frontier hadron colliders such asTevatron and theLarge Hadron Collider (LHC).^[2] The experimental signatures are typically a pair-produced gluinos and their cascade decays. In models of supersymmetry that conserveR-parity, gluinos eventually decay into the undetected lightest super-symmetric particle with many quarks (looking asjets) and the standard modelgauge bosons or Higgs bosons. In theR-parity violating scenarios, gluinos can either decay promptly into multiple jets, or be long-lived leaving anomalous sign of "displaced decay vertices" from the interaction point where they are generated.

There has been no sign of gluinos observed so far. The strongest limit has been set byLHC (ATLAS/CMS) where up to minimum 1 TeV and maximum 2 TeV in gluino mass has been excluded.^[3][4]

In the graphic novelWatchmen, chapter 1, page 23,Dr Manhattan mentions he is about to locate a gluino.

• Fermions
• Hypothetical elementary particles

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