Can partons describe the CDF jet data?

Abstract

The recent CDF single jet inclusive measurements at Fermilab are incorporated in a global next-to-leading order parton analysis of the available deep inelastic and related data. We find that it is impossible to achieve a simultaneous QCD description of both the CDF jet distribution for transverse energies $E_T>200$~GeV and the deep inelastic structure function data for $x>0.3$. However, the CDF data for $E_T<200$~GeV and the deep inelastic data are adequately described provided that the QCD coupling ${\alpha }_S(M_Z^2)$ is increased from its preferred deep inelastic value to ${\alpha }_S(M_Z^2)\simeq 0.116-0.120$.

Comments: 9 pages, LATEX, 4 figures available as .uu file