Novel QCD Phenomena at the LHC: The Ridge, Digluon-Initiated Subprocesses, Direct Reactions, Non-Universal Antishadowing, and Forward Higgs Production

TL;DR

This paper discusses novel tests of QCD at the LHC, including phenomena like the Ridge and forward Higgs production, and reviews the Principle of Maximum Conformality to improve measurement precision and sensitivity to new physics.

Contribution

It introduces new QCD phenomena at the LHC and reviews the PMC method for reducing theoretical uncertainties in pQCD calculations.

Findings

Identification of novel QCD phenomena at the LHC

PMC reduces renormalization scale uncertainties

Enhanced sensitivity of LHC measurements to new physics

Abstract

I discuss a number of novel tests of QCD at the LHC, measurements which can illuminate fundamental features of hadron physics. I also review the "Principle of Maximum Conformality" (PMC) which systematically sets the renormalization scale order-by-order in pQCD, eliminating an unnecessary theoretical uncertainty. The PMC allows LHC experiments to test QCD much more precisely, and the sensitivity of LHC measurements to physics beyond the Standard Model is increased.