Abstract
We study the a(1)a(1) and Za(1) decay channels of the next-to-lightest CP-even Higgs boson h(2) Yof the NMSSM at the LHC, where the h(2) is produced in gluon fusion. It is found that while the h(2) discovery is impossible through the latter channel, the former one in the 4 tau final state is a promising channel to discover the h(2) with masses up to around 250 GeV at the LHC. Such a discovery of the h2 is mostly accompanied with a light a(1), which is a clear evidence for distinguishing the NMSSM from the MSSM since such a light a(1) is impossible in the MSSM.