Subleading Corrections to Hadronic Cross-Sections at High Energies

TL;DR

This paper investigates subleading corrections to hadronic cross-sections at high energies within the High Energy Jets formalism, crucial for interpreting LHC data and improving predictions for processes like Higgs plus dijet production.

Contribution

It extends the HEJ formalism to include subleading corrections, enhancing the accuracy of high-energy QCD amplitude predictions at the LHC.

Findings

Provides a refined resummation of high-energy logarithms.

Improves theoretical predictions for Higgs plus dijet processes.

Enhances understanding of QCD behavior in the high-energy limit.

Abstract

The Large Hadron Collider (LHC) has provided, and will continue to provide, data for collisions at the highest energies ever seen in a particle accelerator. A strong knowledge of the properties of amplitudes for Quantum Chromodynamics in the High Energy Limit is therefore important to interpret this data. We study this limit in the context of the High Energy Jets (HEJ) formalism. This formalism resums terms in the perturbative expansion of the cross-section that behave like $\alpha_s^n \log \left(\frac{s}{-t}\right)^{n-1}$, which are enhanced in this limit. Understanding this region is particularly important in certain key analyses at the LHC: for example, Higgs-boson-plus-dijet analyses where cuts are applied to pick out events with a large $m_{jj}$ and in many searches for new physics.