[PWGLF] Update MC Centrality in SpectraTOFLight (#17863)

Author: fpvolpe

PWGLF/Tasks/Nuspex/spectraTOFLight.cxx

@@ -368,7 +368,7 @@ struct SpectraTOFLight {
           histos.add(hpt_numtof_str[i].data(), pTCharge[i], kTHnSparseD, {ptAxis, multAxis, dcaXyAxis});
           histos.add(hpt_numtof_mat[i].data(), pTCharge[i], kTHnSparseD, {ptAxis, multAxis, dcaXyAxis});
 
-          histos.add(hpt_den_prm_goodev[i].data(), pTCharge[i], kTH3D, {ptAxis, multAxis, etaAxis});
+          histos.add(hpt_den_prm_goodev[i].data(), pTCharge[i], kTH2D, {ptAxis, multAxis});
 
         } else {
           histos.add(hpt_num_prm[i].data(), pTCharge[i], kTH2D, {ptAxis, dcaXyAxis});
@@ -383,7 +383,7 @@ struct SpectraTOFLight {
           histos.add(hpt_den_str[i].data(), pTCharge[i], kTH1D, {ptAxis});
           histos.add(hpt_den_mat[i].data(), pTCharge[i], kTH1D, {ptAxis});
 
-          histos.add(hpt_den_prm_goodev[i].data(), pTCharge[i], kTH2D, {ptAxis, etaAxis});
+          histos.add(hpt_den_prm_goodev[i].data(), pTCharge[i], kTH1D, {ptAxis});
         }
         histos.add(hpt_den_prm_mcgoodev[i].data(), pTCharge[i], kTH2D, {ptAxis, multAxis});
         if (enableDCAxyzHistograms) {
@@ -856,7 +856,8 @@ struct SpectraTOFLight {
       return; // Skips processing if no corresponding MC collision is found (rare case!)
     }
 
-    const float multiplicity = getMultiplicity(collision);
+    const auto& mcCollision = collision.mcCollision_as<GenMCCollisions>();
+    const float multiplicity = getMultiplicityMC(mcCollision);
 
     if (mcParticle.pdgCode() != PDGs[i]) {
       return;
@@ -1028,9 +1029,9 @@ struct SpectraTOFLight {
     if (mcParticle.isPhysicalPrimary()) {
       if (isEventSelected<false, false>(collision)) {
         if (includeCentralityMC) {
-          histos.fill(HIST(hpt_den_prm_goodev[i]), mcParticle.pt(), multiplicity, mcParticle.eta());
+          histos.fill(HIST(hpt_den_prm_goodev[i]), mcParticle.pt(), multiplicity);
         } else {
-          histos.fill(HIST(hpt_den_prm_goodev[i]), mcParticle.pt(), mcParticle.eta());
+          histos.fill(HIST(hpt_den_prm_goodev[i]), mcParticle.pt());
         }
       }
     }