Abstract
A slight incompatibility in recent low-energy and high-energy α s measurements can be interpreted as evidence for new light colour degrees of freedom. Assuming that these are the gluinos of a supersymmetric extension of the Standard Model, we investigate to what extent they change the standard QCD predictions for deep inelastic structure functions, and in particular whether they can be detected in such measurements at HERA. We present a modified set of parton distributions which includes a light gluino distribution and which can be used for further phenomenological investigation.
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