If neutrinos have Dirac masses, then the minimal supersymmtric standard 
model (MSSM) may be extended by right-chiral neutrino and their 
superpartners. In such an extension right-chiral sneutrinos can be the 
lightest supersymmetric particle (LSP) in some region of MSSM parameter 
space, which was partially disallowed by charged LSP searches. In 
a supergravity framework, I will discuss LHC signatures of scenarios 
with different charged Next-to-LSPs (NLSPs) and the right sneutrino LSP, 
where the former ones are long-lived and decay outside the detector.