[PWGEM/Dilepton] update mft ref bit (#15343)

Co-authored-by: ALICE Action Bot <alibuild@cern.ch>

Author: dsekihat

PWGEM/Dilepton/TableProducer/skimmerPrimaryMFTTrack.cxx

@@ -198,27 +198,33 @@ struct skimmerPrimaryMFTTrack {
 
     // As minimal cuts, following cuts are applied. The cut values are hardcoded on the purpose for consistent bit operation.
     // Ncls MFT >= 5
-    // chi2/ndf MFT < 5
+    // chi2/ndf MFT < 4
     // |dcaXY| < 0.06 cm
 
-    if (mfttrack.nClusters() < 6 || mfttrack.chi2() / ndf > 5.f || std::fabs(dcaXY) > 0.05) {
+    if (mfttrack.nClusters() < 5 || mfttrack.chi2() / ndf > 4.f || std::fabs(dcaXY) > 0.06) {
       return;
     }
 
+    if (mfttrack.nClusters() >= 6) {
+      trackBit |= static_cast<uint16_t>(RefMFTTrackBit::kNclsMFT6);
+    }
     if (mfttrack.nClusters() >= 7) {
       trackBit |= static_cast<uint16_t>(RefMFTTrackBit::kNclsMFT7);
     }
     if (mfttrack.nClusters() >= 8) {
       trackBit |= static_cast<uint16_t>(RefMFTTrackBit::kNclsMFT8);
     }
 
-    if (mfttrack.chi2() / ndf < 4.f) {
-      trackBit |= static_cast<uint16_t>(RefMFTTrackBit::kChi2MFT4);
-    }
     if (mfttrack.chi2() / ndf < 3.f) {
       trackBit |= static_cast<uint16_t>(RefMFTTrackBit::kChi2MFT3);
     }
+    if (mfttrack.chi2() / ndf < 2.f) {
+      trackBit |= static_cast<uint16_t>(RefMFTTrackBit::kChi2MFT2);
+    }
 
+    if (std::fabs(dcaXY) < 0.05) {
+      trackBit |= static_cast<uint16_t>(RefMFTTrackBit::kDCAxy005cm);
+    }
     if (std::fabs(dcaXY) < 0.04) {
       trackBit |= static_cast<uint16_t>(RefMFTTrackBit::kDCAxy004cm);
     }

PWGEM/Dilepton/Utils/EMTrackUtilities.h

@@ -47,14 +47,16 @@ enum class RefTrackBit : uint16_t { // This is not for leptons, but charged trac
 };
 
 enum class RefMFTTrackBit : uint16_t { // This is not for leptons, but charged tracks for reference flow.
-  kNclsMFT7 = 1,                       // default is 6
-  kNclsMFT8 = 2,
-  kChi2MFT4 = 4, // default is 5
-  kChi2MFT3 = 8,
-  kDCAxy004cm = 16, // default is 0.05 cm
-  kDCAxy003cm = 32,
-  kDCAxy002cm = 64,
-  kDCAxy001cm = 128,
+  kNclsMFT6 = 1,                       // default is 5
+  kNclsMFT7 = 2,
+  kNclsMFT8 = 4,
+  kChi2MFT3 = 8, // default is 4
+  kChi2MFT2 = 16,
+  kDCAxy005cm = 32, // default is 0.06 cm
+  kDCAxy004cm = 64,
+  kDCAxy003cm = 128,
+  kDCAxy002cm = 256,
+  kDCAxy001cm = 512,
 };
 
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