Parton distributions: a study of the new HERA data, αs, the gluon and pp jet production

New data, especially HERA measurements of the proton structure function at small x, allow the opportunity to improve our knowledge of the gluon and quark distribution functions. We perform a global analysis which incorporates these new precise data, and which extends down to Q2 = 1.5 GeV2. We discuss the sensitivity to the value of αs and the improvement in the determination of the gluon. We compare the predictions of the single jet inclusive cross section with recent measurements from the Fermilab Tevatron.