Pair production of neutralinos via gluon-gluon collisions

Abstract

The production of a neutralino pair via gluon-gluon fusion is studied in the minimal supersymmetric model (MSSM) at proton-proton colliders. The numerical analysis of their production rates is carried out in the MSUGRA scenario. The results show that this cross section may reach about 80 fb for ${\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{\ensuremath{\chi}}}_{1}^{0}{\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{\ensuremath{\chi}}}_{2}^{0}$ pair production and 23 fb for ${\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{\ensuremath{\chi}}}_{2}^{0}{\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{\ensuremath{\chi}}}_{2}^{0}$ pair production with suitable input parameters at the future CERN LHC collider. It shows that this loop-mediated process can be competitive with the quark-antiquark annihilation process at the LHC.