Add t in dvmp; add a place holder for InvQuant in REC

WIP: Add t in dvmp; add a place holder for InvQuant with limited track selection in REC

benchmarks/dvmp/analysis/vm_invar.cxx

@@ -84,7 +84,8 @@ int vm_invar(const std::string& config_name)
                   .Define("invariant_quantities", util::calc_inv_quant_simu, {"p_sim"})
                   .Define("nu_sim", util::get_nu_simu, {"invariant_quantities"})
                   .Define("Q2_sim", util::get_Q2_simu, {"invariant_quantities"})
-                  .Define("x_sim", util::get_x_simu, {"invariant_quantities"});
+                  .Define("x_sim", util::get_x_simu, {"invariant_quantities"})
+                  .Define("t_sim", util::get_t_simu, {"invariant_quantities"});
   //================================================================
 
   // Define output histograms
@@ -92,6 +93,7 @@ int vm_invar(const std::string& config_name)
   auto h_nu_sim = d_im.Histo1D({"h_nu_sim", ";#nu/1000;#", 100, 0., 2.}, "nu_sim");
   auto h_Q2_sim = d_im.Histo1D({"h_Q2_sim", ";Q^{2};#", 100, 0., 15.}, "Q2_sim");
   auto h_x_sim  = d_im.Histo1D({"h_x_sim", ";x;#", 100, 0., 0.1}, "x_sim");
+  auto h_t_sim  = d_im.Histo1D({"h_t_sim", ";t;#", 100, -1., 0.}, "t_sim");
 
   // Plot our histograms.
   // TODO: to start I'm explicitly plotting the histograms, but want to