Quark-Antiquark Energy Density Function applied to Di-Gauge Boson Production at the LHC

TL;DR

This paper investigates quark-antiquark reactions leading to di-gauge boson production at the LHC, using energy density functions derived from parton densities, to explore Standard Model predictions and potential signals of new heavy vector bosons.

Contribution

It introduces a method to compute di-gauge boson production cross sections at the LHC using energy density functions from parton densities, including polarization effects and new heavy boson contributions.

Findings

Calculated differential and total cross sections for di-boson production.

Analyzed the impact of heavy vector bosons W' and Z' on these processes.

Explored polarization states of the final di-bosons.

Abstract

In view of the start up of the 14 TeV pp Large Hadron Collider the quark anti-quark reactions leading to the final states W^+W^-, W^+-Z^0 and Z^0Z^0 are studied, in the frame workn of the Standard Model (SM), using helicity amplitudes. The differential and total cross sections are first evaluated in the parton-parton center of mass system. They are then transformed to their expected behavior in pp collisions through the parton-parton Energy Density Functions which are here derived from the known Parton Density Functions of the proton. In particular the single and joint longitudinal polarizations of the final state di-bosons are calculated. The effect on these reactions from the presence of s-channel heavy vector bosons, like the W' and Z', are evaluated to explore the possibility to utilize the gauge boson pair production as a probe for these 'Beyond the SM' phenomena.