[Rivet-svn] r2539 - trunk/src/Analyses

[blackhole at projects.hepforge.org]

Author: fsiegert
Date: Sun Jun 27 14:55:48 2010
New Revision: 2539

Log:
Reduce mass2<0 sensitivity.

Modified:
   trunk/src/Analyses/MC_JetAnalysis.cc

Modified: trunk/src/Analyses/MC_JetAnalysis.cc
==============================================================================
--- trunk/src/Analyses/MC_JetAnalysis.cc	Sun Jun 27 11:52:22 2010	(r2538)
+++ trunk/src/Analyses/MC_JetAnalysis.cc	Sun Jun 27 14:55:48 2010	(r2539)
@@ -121,7 +121,7 @@
       _h_pT_jet[i]->fill(jets[i].momentum().pT()/GeV, weight);
       // Check for numerical precision issues with jet masses
       double m2_i = jets[i].momentum().mass2();
-      if (m2_i < 0) {
+      if (m2_i < -1e-8) {
         getLog() << Log::WARNING << "Jet mass2 is negative: " << m2_i << " GeV^2. "
                  << "Truncating to 0.0, assuming numerical precision is to blame." << endl;
         m2_i = 0.0;