Central exclusive production of dijets at hadronic colliders

TL;DR

This paper critically re-evaluates the theoretical calculation of central exclusive dijet production at hadronic colliders, highlighting the dominance of non-perturbative effects and uncertainties in the perturbative approach, with implications for other high-mass systems.

Contribution

It provides a critical assessment of the standard perturbative approach, emphasizing the importance of non-perturbative effects in central exclusive production processes.

Findings

Process dominated by non-perturbative effects

Perturbative ingredients like Sudakov form factor are not well-controlled

Comparison with data helps constrain uncertainties

Abstract

In view of the recent diffractive dijet data from CDF run II, we critically re-evaluate the standard approach to the calculation of central production of dijets in quasi-elastic hadronic collisions. We find that the process is dominated by the non-perturbative region, and that even perturbative ingredients, such as the Sudakov form factor, are not under theoretical control. Comparison with data allows us to fix some of the uncertainties. Although we focus on dijets, our arguments apply to other high-mass central systems, such as the Higgs boson.