From 08ff53580d5f0e8b7c59777794bf17ea513ec2a4 Mon Sep 17 00:00:00 2001
From: Yash Patley <52608802+yashpatley@users.noreply.github.com>
Date: Thu, 14 Aug 2025 19:49:14 +0530
Subject: [PATCH] [PWGCF] Update lambdaR2Correlation.cxx

Added a pt-mass-cent histogram to get purity per centrality class.
---
 .../TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx b/PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx
index ba34f15f58d..814899e0261 100644
--- a/PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx
+++ b/PWGCF/TwoParticleCorrelations/Tasks/lambdaR2Correlation.cxx
@@ -1519,7 +1519,7 @@ struct LambdaR2Correlation {
     // Event
     histos.add("Event/Reco/h1f_collision_posz", "V_{Z} Distribution", kTH1F, {axisPosZ});
     histos.add("Event/Reco/h1f_ft0m_mult_percentile", "FT0M (%)", kTH1F, {axisCent});
-    histos.add("Event/Reco/h2f_Mult_vs_Centrality", "N_{TPC} vs FT0M(%)", kTH2F, {axisCent, axisChMult});
+    histos.add("Event/Reco/h2f_Mult_vs_Centrality", "N_{ch} vs FT0M(%)", kTH2F, {axisCent, axisChMult});
     histos.add("Event/Reco/h2f_lambda_mult", "#Lambda - Multiplicity", kTH2F, {axisCent, axisMult});
     histos.add("Event/Reco/h2f_antilambda_mult", "#bar{#Lambda} - Multiplicity", kTH2F, {axisCent, axisMult});
 
@@ -1534,8 +1534,8 @@ struct LambdaR2Correlation {
 
     // Single and Two Particle Densities
     // 1D Histograms
-    histos.add("Reco/Primary/h2f_n1_mass_LaP", "#rho_{1}^{#Lambda}", kTH2F, {axisCent, axisMass});
-    histos.add("Reco/Primary/h2f_n1_mass_LaM", "#rho_{1}^{#bar{#Lambda}}", kTH2F, {axisCent, axisMass});
+    histos.add("Reco/Primary/h3f_n1_centmasspt_LaP", "#rho_{1}^{#Lambda}", kTH3F, {axisCent, axisMass, axisPt});
+    histos.add("Reco/Primary/h3f_n1_centmasspt_LaM", "#rho_{1}^{#bar{#Lambda}}", kTH3F, {axisCent, axisMass, axisPt});
     histos.add("Reco/Primary/h2f_n1_pt_LaP", "#rho_{1}^{#Lambda}", kTH2F, {axisCent, axisPt});
     histos.add("Reco/Primary/h2f_n1_pt_LaM", "#rho_{1}^{#bar{#Lambda}}", kTH2F, {axisCent, axisPt});
     histos.add("Reco/Primary/h2f_n1_eta_LaP", "#rho_{1}^{#Lambda}", kTH2F, {axisCent, axisEta});
@@ -1648,7 +1648,7 @@ struct LambdaR2Correlation {
       histos.fill(HIST(SubDirRecGen[rec_gen]) + HIST(SubDirPrmScd[pst]) + HIST("Efficiency/h3f_n1_centptrap_") + HIST(SubDirHist[part]), cent, track.pt(), track.rap());
 
       // QA Plots
-      histos.fill(HIST(SubDirRecGen[rec_gen]) + HIST(SubDirPrmScd[pst]) + HIST("h2f_n1_mass_") + HIST(SubDirHist[part]), cent, track.mass());
+      histos.fill(HIST(SubDirRecGen[rec_gen]) + HIST(SubDirPrmScd[pst]) + HIST("h3f_n1_centmasspt_") + HIST(SubDirHist[part]), cent, track.mass(), track.pt());
       histos.fill(HIST(SubDirRecGen[rec_gen]) + HIST(SubDirPrmScd[pst]) + HIST("h2f_n1_pt_") + HIST(SubDirHist[part]), cent, track.pt(), track.corrFact());
       histos.fill(HIST(SubDirRecGen[rec_gen]) + HIST(SubDirPrmScd[pst]) + HIST("h2f_n1_eta_") + HIST(SubDirHist[part]), cent, track.eta(), track.corrFact());
       histos.fill(HIST(SubDirRecGen[rec_gen]) + HIST(SubDirPrmScd[pst]) + HIST("h2f_n1_phi_") + HIST(SubDirHist[part]), cent, track.phi(), track.corrFact());