From cc0cd3ac7f7f101f4541a431927622aba24f2fe5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alicia=20V=C3=A1zquez-Ramos?= <aliciavr@ugr.es>
Date: Tue, 3 Feb 2026 11:21:27 -0600
Subject: [PATCH] Restore the shower merging algorithm in another place to
 avoid inconsistent state of PFParticles (-1 track scores).

---
 .../scripts/PandoraSettings_Neutrino_SBND.xml | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/sbndcode/SBNDPandora/scripts/PandoraSettings_Neutrino_SBND.xml b/sbndcode/SBNDPandora/scripts/PandoraSettings_Neutrino_SBND.xml
index 0fb9f13d0..1c177a684 100644
--- a/sbndcode/SBNDPandora/scripts/PandoraSettings_Neutrino_SBND.xml
+++ b/sbndcode/SBNDPandora/scripts/PandoraSettings_Neutrino_SBND.xml
@@ -447,6 +447,39 @@
     <DaughterListNames>TrackParticles3D ShowerParticles3D DaughterVertices3D ClustersU ClustersV ClustersW TrackClusters3D ShowerClusters3D</DaughterListNames>
   </algorithm>
 
+  <!-- Shower Merging -->
+  <algorithm type = "LArShowerMergingPfoMopUp">
+    <InputPfoListNames>TrackParticles3D ShowerParticles3D</InputPfoListNames>
+    <DaughterListNames>TrackParticles3D ShowerParticles3D DaughterVertices3D ClustersU ClustersV ClustersW TrackClusters3D ShowerClusters3D</DaughterListNames>
+  </algorithm>
+
+  <!-- Re-run the PFO Characterisation to recalculate the scores after primary electron merging -->
+  <algorithm type = "LArBdtPfoCharacterisation">
+    <TrackPfoListName>TrackParticles3D</TrackPfoListName>
+    <ShowerPfoListName>ShowerParticles3D</ShowerPfoListName>
+    <UseThreeDInformation>true</UseThreeDInformation>
+    <MvaFileName>PandoraMVAs/PandoraBdt_SBND.xml</MvaFileName>
+    <MvaName>PfoCharBDT2</MvaName>
+    <MvaFileNameNoChargeInfo>PandoraMVAs/PandoraBdt_SBND.xml</MvaFileNameNoChargeInfo>
+    <MvaNameNoChargeInfo>PfoCharBDTNoChargeInfo2</MvaNameNoChargeInfo>
+    <MinProbabilityCut>0.51</MinProbabilityCut>
+    <PersistFeatures>true</PersistFeatures>
+    <FeatureTools>
+      <tool type = "LArThreeDLinearFitFeatureTool"/>
+      <tool type = "LArThreeDVertexDistanceFeatureTool"/>
+      <tool type = "LArThreeDPCAFeatureTool"/>
+      <tool type = "LArThreeDOpeningAngleFeatureTool"/>
+      <tool type = "LArThreeDChargeFeatureTool"/>
+      <tool type = "LArConeChargeFeatureTool"/>
+    </FeatureTools>
+    <FeatureToolsNoChargeInfo>
+      <tool type = "LArThreeDLinearFitFeatureTool"/>
+      <tool type = "LArThreeDVertexDistanceFeatureTool"/>
+      <tool type = "LArThreeDPCAFeatureTool"/>
+      <tool type = "LArThreeDOpeningAngleFeatureTool"/>
+    </FeatureToolsNoChargeInfo>
+  </algorithm>
+
   <algorithm type = "LArNeutrinoProperties">
     <NeutrinoPfoListName>NeutrinoParticles3D</NeutrinoPfoListName>
   </algorithm>