Reminder- to get the METfromParticle in SUSY samples do not forget to vectorially add the neutralino Pt.
The relevant query from Haifeng since ORCA_8_7_1 is
RecQuery RecQuery3("METfromParticle","1.0");
RecQuery3.setParameter
("UseNeutralino", true);
If you have private SUSY sample generation there are appropriate writeDST.orcarc
cards for the query to work- [if not used then your job will crash if you try to use the above query]
-- MariaSpiropulu - 12 Aug 2005