Next-to-leading order multi-leg processes for the Large Hadron Collider

TL;DR

This paper discusses recent advances in precise theoretical predictions for multi-leg processes at the LHC, including NLO corrections for Higgs production and multi-jet subprocesses, enhancing the accuracy of collider simulations.

Contribution

It presents new calculations of NLO corrections for complex multi-leg processes relevant to LHC physics, demonstrating improved computational methods.

Findings

Calculated interference term for Higgs production at O(α^2 α_s^3)

Provided NLO corrections for pp -> ZZ jet process

Analyzed u ubar -> d dbar s sbar subprocess

Abstract

In this talk we discuss recent progress concerning precise predictions for the LHC. We give a status report of three applications of our method to deal with multi-leg one-loop amplitudes: The interference term of Higgs production by gluon- and weak boson fusion to order O(alpha^2 alpha_s^3) and the next-to-leading order corrections to the two processes pp -> ZZ jet and u ubar -> d dbar s sbar. The latter is a subprocess of the four jet cross section at the LHC.