Z boson pair production at the LHC to ${\cal O}(\alpha_s)$ in TeV scale gravity models

Understand

The first results on next-to-leading order QCD corrections to the production of two Z bosons, in hadronic collisions in the large extra dimension ADD model are presented.

• Various kinematical distributions are obtained to order $\alpha_s$ in QCD by taking into account all the parton level subprocesses.
• We estimate the impact of the QCD corrections on various observables and find that they are significant.
• We also show the reduction in factorisation scale uncertainity when ${\cal O}(\alpha_s)$ effects are included.