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arXiv · hep-ph/9502336

Pinning down the Glue in the Proton

A. D. Martin·R. G. Roberts·W. J. Stirling
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Abstract

The latest measurements of $F_2$ at HERA allow for a {\it combination} of gluon and sea quark distributions at small $x$ that is significantly different from those of existing parton sets. We perform a new global fit to deep-inelastic and related data. We find a gluon distribution which is larger for $x \lapproxeq 0.01$, and smaller for $x \sim 0.1$, and a flatter input sea quark distribution than those obtained in our most recent global analysis. The new fit also gives $α_s(M_Z^2) = 0.114$. We study other experimental information available for the gluon including, in particular, the constraints coming from fixed-target and collider prompt $γ$ production data.

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A. D. Martin, R. G. Roberts, W. J. Stirling. 1995-02-17. Pinning down the Glue in the Proton. https://doi.org/10.1016/0370-2693(95)00646-3

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