From c16889a9f53626cfab83c326348549391cb52662 Mon Sep 17 00:00:00 2001
From: tomeichlersmith <eichl008@umn.edu>
Date: Tue, 3 Oct 2023 11:19:36 -0500
Subject: [PATCH] make sure to weight the histograms by the event weight

this does not affect the distribution shapes greatly since the weights
are extremely close to exactly 1/B within each sample
---
 DQM/src/DQM/DarkBremInteraction.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/DQM/src/DQM/DarkBremInteraction.cxx b/DQM/src/DQM/DarkBremInteraction.cxx
index c278b8d3b..47e785f9a 100644
--- a/DQM/src/DQM/DarkBremInteraction.cxx
+++ b/DQM/src/DQM/DarkBremInteraction.cxx
@@ -195,6 +195,7 @@ void DarkBremInteraction::onProcessStart() {
  * and then use the electron mass to calculate its total energy.
  */
 void DarkBremInteraction::produce(framework::Event& event) {
+  histograms_.setWeight(event.getEventHeader().getWeight());
   const auto& particle_map{event.getMap<int,ldmx::SimParticle>("SimParticles")};
   const ldmx::SimParticle *recoil{nullptr}, *aprime{nullptr}, *beam{nullptr};
   for (const auto& [track_id, particle] : particle_map) {