text: We have proposed a scenario of the RH neutrino dark matter in the context of the minimal 
  
  gauged U(1)B  L model. We have introduced a discrete Z2 parity in the model, so that one 
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              [html]<thead><tr><td>Table</td><td>Age ( years )</td><td>Control</td><td>Avo antianant</td><td>Allongery</td><td>Statements</td><td>Parameters</td><td>Data</td><td>Statements</td>
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  8 