Linked from
The 36 pages that link to Gluon, each with the reason it gives.
Strong interactionBroader topic: Gluons transmit the interaction and interact with one another.
BosonBroader topic: Gluons are bosons that carry color charge and bind quarks inside hadrons.
Gauge bosonBroader topic: Gluons mediate the strong force and also interact with one another.
Parton modelBroader topic: Gluons carry part of a hadron's momentum and generate additional partons.
PETRABroader topic: Three-jet events at PETRA provided compelling evidence for the gluon.
David GrossBroader topic: Gluon self-interactions make the strong force weaken at short distances.
Quark epochBroader topic: Gluons carried the strong force throughout the hot plasma.
PartonBroader topic: Gluons are partons and carry a substantial share of hadron momentum.
Force carrierBroader topic: Eight gluon types carry the strong interaction between quarks.
QCD matterBroader topic: Gluons bind quarks in hadrons and contribute directly to plasma dynamics.