Production Rate of Second KK Gauge Bosons in UED Models at LHC

TL;DR

This paper calculates the production rates of second KK gauge bosons at the LHC within the MUED model, highlighting their importance for model discrimination and providing detailed predictions for various compactification scales.

Contribution

It derives effective operators including KK number violation and computes production rates of second KK gauge bosons, emphasizing their significance for scales above 800 GeV.

Findings

Production rates range from 10^2 to 10^6 for compactification scales 400-2000 GeV.

KK number violating processes are crucial for scales >800 GeV.

Second KK gauge bosons are detectable with 100 fb^{-1} luminosity.

Abstract

We calculate the production rates of the second Kaluza-Klein (KK) photon $\gamma^{(2)}$ and Z boson $Z^{(2)}$ at the LHC including all significant processes in the minimal universal extra dimension (MUED) model. For discrimination of the MUED model from other TeV scale models in hadron collider experiments, $\gamma^{(2)}$ and $Z^{(2)}$ play a crucial role. In order to discuss the discrimination and calculate their production rates, we derive effective Lagrangian containing KK number violating operators. We show that KK number violating processes are extremely important for the compactification scale larger than 800 GeV. We find that, with an integrated luminosity of 100 fb$^{-1}$, $\gamma^{(2)}$ and $Z^{(2)}$ are produced 10$^6$ - 10$^2$ for the compactification scale between 400 GeV and 2000 GeV.