From e72fde83ca8fb2a644ead57cbcc67f303f68102c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicol=C3=B2=20Jacazio?= <njacazio@users.noreply.github.com>
Date: Wed, 15 Jul 2026 15:26:23 +0200
Subject: [PATCH] Update PDG check to avoid zero comparison

---
 ALICE3/Tasks/alice3-qa-singleparticle.cxx | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/ALICE3/Tasks/alice3-qa-singleparticle.cxx b/ALICE3/Tasks/alice3-qa-singleparticle.cxx
index 3dd4ef429f9..25d21fcc7cd 100644
--- a/ALICE3/Tasks/alice3-qa-singleparticle.cxx
+++ b/ALICE3/Tasks/alice3-qa-singleparticle.cxx
@@ -249,7 +249,7 @@ struct Alice3SingleParticle {
       } else {
         histos.get<TH2>(HIST("particle/PDGsSecondaries"))->Fill(pdgString, pdgCharge, 1.f);
       }
-      if (mcParticle.pdgCode() != PDG) {
+      if (PDG != 0 && mcParticle.pdgCode() != PDG) {
         continue;
       }
       if (mcParticle.y() < yMin || mcParticle.y() > yMax) {
@@ -417,7 +417,7 @@ struct Alice3SingleParticle {
           LOG(info) << "Track " << track.globalIndex() << " comes from a " << mothers[0].pdgCode() << " and is a " << mcParticle.pdgCode();
         }
       } else {
-        if (mcParticle.pdgCode() != PDG) {
+        if (PDG != 0 && mcParticle.pdgCode() != PDG) {
           continue;
         }
         histos.fill(HIST("track/Pt"), track.pt() * charge);
@@ -469,7 +469,7 @@ struct Alice3SingleParticle {
       } else {
         histos.get<TH2>(HIST("particle/PDGsSecondaries"))->Fill(pdgString, pdgCharge, 1.f);
       }
-      if (mcParticle.pdgCode() != PDG) {
+      if (PDG != 0 && mcParticle.pdgCode() != PDG) {
         continue;
       }
       if (mcParticle.y() < yMin || mcParticle.y() > yMax) {
@@ -609,7 +609,7 @@ struct Alice3SingleParticle {
       } else {
         histos.get<TH2>(HIST("particle/PDGsSecondaries"))->Fill(pdgString, pdgCharge, 1.f);
       }
-      if (mcParticle.pdgCode() != PDG) {
+      if (PDG != 0 && mcParticle.pdgCode() != PDG) {
         continue;
       }
       if (mcParticle.y() < yMin || mcParticle.y() > yMax) {
@@ -734,7 +734,7 @@ struct Alice3SingleParticle {
           LOG(info) << "Track " << track.globalIndex() << " comes from a " << mothers[0].pdgCode() << " and is a " << mcParticle.pdgCode();
         }
       } else {
-        if (mcParticle.pdgCode() != PDG) {
+        if (PDG != 0 && mcParticle.pdgCode() != PDG) {
           continue;
         }
         histos.fill(HIST("track/Pt"), track.pt() * charge);