The diffractive structure function at the Tevatron: CDF results

TL;DR

This paper reviews CDF's measurements of the diffractive structure function at the Tevatron, highlighting a breakdown of QCD factorization when compared with HERA results and between different diffractive processes.

Contribution

It provides the first detailed comparison of diffractive structure functions from CDF with those from HERA, revealing factorization breakdowns.

Findings

Diffractive dijet results differ from HERA predictions

Breakdown of QCD factorization observed

Differences between single diffraction and double Pomeron exchange results

Abstract

Results on hard diffraction from CDF are reviewed with emphasis on the determination of the diffractive structure function of the (anti)proton from single diffractive and double Pomeron exchange dijet production. Comparison of the diffractive dijet results with predictions based on diffractive deep inelastic scattering at HERA shows a breakdown of conventional QCD factorization. A similar breakdown is observed within the CDF results in comparing the structure functions obtained from single diffraction and double Pomeron exchange.