Merge pull request #30558 from ahinzmann/negativeJEC111

Add safety check to spot negative jet energy correction factors [11_1_X backport]
cms-sw · Jul 16, 2020 · 0393b55 · 0393b55
2 parents 2df13a8 + 2ea1843
commit 0393b55
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/CondFormats/JetMETObjects/src/SimpleJetCorrector.cc b/CondFormats/JetMETObjects/src/SimpleJetCorrector.cc
@@ -61,6 +61,11 @@ float SimpleJetCorrector::correction(const std::vector<float>& fX, const std::ve
     }
     result = tmp / mParameters.definitions().nBinVar();
   }
+  if (result <= 0) {
+    edm::LogWarning("SimpleJetCorrector")
+        << "Null or negative jet energy correction factor evaluated: " << result << ". Truncating to 10e-10.";
+    result = 10e-10;
+  }
   return result;
 }
 //------------------------------------------------------------------------