PARTON DISTRIBUTIONS - A STUDY OF THE NEW HERA DATA, ALPHA(S), THE GLUON AND P(P)OVER-BAR JET PRODUCTION

New data, especially HERA measurements of the proton structure functio n at small x, allow the opportunity to improve our knowledge of the gl uon and quark distribution functions. We perform a global analysis whi ch incorporates these new precise data, and which extends down to Q(2) = 1.5 GeV2, We discuss the sensitivity to the value of alpha(s) and t he improvement in the determination of the gluon. We compare the predi ctions of the single jet inclusive cross section with recent measureme nts from the Fermilab Tevatron.