From e3438e1fa2f6680adb7e3e1f886349188cfc8900 Mon Sep 17 00:00:00 2001
From: Alicja Plachta <alicja.plachta@cern.ch>
Date: Fri, 27 Feb 2026 11:58:07 +0100
Subject: [PATCH] Add option to call fillParticles for MC truth for V0

---
 .../TableProducer/femtoUniverseProducerTask.cxx            | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/PWGCF/FemtoUniverse/TableProducer/femtoUniverseProducerTask.cxx b/PWGCF/FemtoUniverse/TableProducer/femtoUniverseProducerTask.cxx
index f39369b4052..f09135298fe 100644
--- a/PWGCF/FemtoUniverse/TableProducer/femtoUniverseProducerTask.cxx
+++ b/PWGCF/FemtoUniverse/TableProducer/femtoUniverseProducerTask.cxx
@@ -136,6 +136,7 @@ struct FemtoUniverseProducerTask {
   Configurable<bool> confFillCollExt{"confFillCollExt", false, "Option to fill collision extended table"};
 
   Configurable<bool> confCollMCTruthOnlyReco{"confCollMCTruthOnlyReco", false, "Fill only MC truth collisions that were reconstructed and selected"};
+  Configurable<bool> confFillMCTruthV0Daugh{"confFillMCTruthV0Daugh", true, "Fill MC truth daughters of V0"};
 
   /// Event filtering (used for v0-cascade analysis)
   Configurable<std::string> zorroMask{"zorroMask", "", "zorro trigger class to select on (empty: none)"};
@@ -2912,7 +2913,11 @@ struct FemtoUniverseProducerTask {
         const auto colcheck = fillMCTruthCollisionsCentRun3(col);
         if (colcheck) {
           outputCollExtra(1.0, 1.0);
-          fillV0MCTruth(groupedMCParticles); // fills MC V0s and its daughters
+          if (confFillMCTruthV0Daugh) {
+            fillV0MCTruth(groupedMCParticles); // fills MC V0s and its daughters
+          } else {
+            fillParticles<decltype(groupedMCParticles), true, true>(groupedMCParticles, recoMcIds); // fills mc particles
+          }
         }
       }
     }