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

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