From 14bd53b62296609a4ce5994dd82c07e8f4c97ef5 Mon Sep 17 00:00:00 2001
From: SCHOTTER Romain <47983209+romainschotter@users.noreply.github.com>
Date: Tue, 6 Oct 2026 10:40:03 +0200
Subject: [PATCH] Fix MC association check when running over real data

Updated condition to skip MC association for real data runs.
---
 PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx b/PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx
index 1befc65defe..1d7a4877abd 100644
--- a/PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx
+++ b/PWGLF/Tasks/Strangeness/derivedlambdakzeroanalysis.cxx
@@ -3078,7 +3078,8 @@ struct derivedlambdakzeroanalysis {
       }
 
       // consider only associated candidates if asked to do so, disregard association
-      if (!doMCAssociation) {
+      // do not perform MC association when running over real data
+      if (doprocessRealDataRun3 || doprocessRealDataRun2 || !doMCAssociation) {
         BITSET(selMap, selConsiderK0Short);
         BITSET(selMap, selConsiderLambda);
         BITSET(selMap, selConsiderAntiLambda);