From 49d9656530b39b1054e7c421c16123d366ed2717 Mon Sep 17 00:00:00 2001
From: gianniliveraro <gianniliveraro@gmail.com>
Date: Sun, 22 Feb 2026 15:11:12 -0300
Subject: [PATCH 1/2] Minor fix:  safeguard when getting MC info of V0s

---
 PWGLF/TableProducer/Strangeness/sigma0builder.cxx | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/PWGLF/TableProducer/Strangeness/sigma0builder.cxx b/PWGLF/TableProducer/Strangeness/sigma0builder.cxx
index d6bb3f0b11c..8d3bf29dbf8 100644
--- a/PWGLF/TableProducer/Strangeness/sigma0builder.cxx
+++ b/PWGLF/TableProducer/Strangeness/sigma0builder.cxx
@@ -1244,11 +1244,18 @@ struct sigma0builder {
   template <typename TCollision, typename TV0Object>
   void analyzeV0CollAssoc(TCollision const& collision, TV0Object const& fullv0s, std::vector<int> selV0Indices, bool isPhotonAnalysis)
   {
+    if (!collision.has_straMCCollision())
+      return;
+
     auto v0MCCollision = collision.template straMCCollision_as<soa::Join<aod::StraMCCollisions, aod::StraMCCollMults>>();
     float IR = (fGetIR) ? rateFetcher.fetch(ccdb.service, collision.timestamp(), collision.runNumber(), irSource, fIRCrashOnNull) * 1.e-3 : -1;
 
     for (size_t i = 0; i < selV0Indices.size(); ++i) {
       auto v0 = fullv0s.rawIteratorAt(selV0Indices[i]);
+
+      if (!v0.has_v0MCCore()) 
+        continue;
+
       auto v0MC = v0.template v0MCCore_as<soa::Join<aod::V0MCCores, aod::V0MCCollRefs>>();
 
       float V0MCpT = RecoDecay::pt(array<float, 2>{v0MC.pxMC(), v0MC.pyMC()});

From b69750a28a2a32335ecbba59fd9506537ce92a10 Mon Sep 17 00:00:00 2001
From: ALICE Action Bot <alibuild@cern.ch>
Date: Sun, 22 Feb 2026 18:15:57 +0000
Subject: [PATCH 2/2] Please consider the following formatting changes

---
 PWGLF/TableProducer/Strangeness/sigma0builder.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/PWGLF/TableProducer/Strangeness/sigma0builder.cxx b/PWGLF/TableProducer/Strangeness/sigma0builder.cxx
index 8d3bf29dbf8..cc6dcf403cf 100644
--- a/PWGLF/TableProducer/Strangeness/sigma0builder.cxx
+++ b/PWGLF/TableProducer/Strangeness/sigma0builder.cxx
@@ -1253,7 +1253,7 @@ struct sigma0builder {
     for (size_t i = 0; i < selV0Indices.size(); ++i) {
       auto v0 = fullv0s.rawIteratorAt(selV0Indices[i]);
 
-      if (!v0.has_v0MCCore()) 
+      if (!v0.has_v0MCCore())
         continue;
 
       auto v0MC = v0.template v0MCCore_as<soa::Join<aod::V0MCCores, aod::V0MCCollRefs>>();