diff --git a/PWGEM/Dilepton/Core/Dilepton.h b/PWGEM/Dilepton/Core/Dilepton.h
index ee453f77b4e..30780b347e5 100644
--- a/PWGEM/Dilepton/Core/Dilepton.h
+++ b/PWGEM/Dilepton/Core/Dilepton.h
@@ -1289,6 +1289,7 @@ struct Dilepton {
   o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
                                                                          ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
+                                                                           ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
                                                                          o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
diff --git a/PWGEM/Dilepton/Core/DileptonHadronMPC.h b/PWGEM/Dilepton/Core/DileptonHadronMPC.h
index 45b258aa033..b57009a5259 100644
--- a/PWGEM/Dilepton/Core/DileptonHadronMPC.h
+++ b/PWGEM/Dilepton/Core/DileptonHadronMPC.h
@@ -980,6 +980,7 @@ struct DileptonHadronMPC {
   o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
                                                                          ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
+                                                                           ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
                                                                          o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
diff --git a/PWGEM/Dilepton/Core/DileptonMC.h b/PWGEM/Dilepton/Core/DileptonMC.h
index 7503a321ae5..6f9bafe50d3 100644
--- a/PWGEM/Dilepton/Core/DileptonMC.h
+++ b/PWGEM/Dilepton/Core/DileptonMC.h
@@ -2532,6 +2532,7 @@ struct DileptonMC {
   o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
                                                                          ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
+                                                                           ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
                                                                          o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
diff --git a/PWGEM/Dilepton/Core/SingleTrackQC.h b/PWGEM/Dilepton/Core/SingleTrackQC.h
index 41c33a83918..730304a91f5 100644
--- a/PWGEM/Dilepton/Core/SingleTrackQC.h
+++ b/PWGEM/Dilepton/Core/SingleTrackQC.h
@@ -884,6 +884,7 @@ struct SingleTrackQC {
   o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
                                                                          ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
+                                                                           ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
                                                                          o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
diff --git a/PWGEM/Dilepton/Core/SingleTrackQCMC.h b/PWGEM/Dilepton/Core/SingleTrackQCMC.h
index dcbe9ddcccc..2121d405e3d 100644
--- a/PWGEM/Dilepton/Core/SingleTrackQCMC.h
+++ b/PWGEM/Dilepton/Core/SingleTrackQCMC.h
@@ -1157,6 +1157,7 @@ struct SingleTrackQCMC {
   o2::framework::expressions::Filter prefilter_derived_electron = ifnode(dielectroncuts.cfg_apply_cuts_from_prefilter_derived.node() && dielectroncuts.cfg_prefilter_bits_derived.node() >= static_cast<uint16_t>(1),
                                                                          ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kMee))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiV))) <= static_cast<uint16_t>(0), true) &&
+                                                                           ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS))) <= static_cast<uint16_t>(0), true) &&
                                                                            ifnode((dielectroncuts.cfg_prefilter_bits_derived.node() & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) > static_cast<uint16_t>(0), (o2::aod::emprimaryelectron::pfbderived & static_cast<uint16_t>(1 << int(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackULS))) <= static_cast<uint16_t>(0), true),
                                                                          o2::aod::emprimaryelectron::pfbderived >= static_cast<uint16_t>(0));
diff --git a/PWGEM/Dilepton/Tasks/prefilterDielectron.cxx b/PWGEM/Dilepton/Tasks/prefilterDielectron.cxx
index b8076747676..e04389c03ec 100644
--- a/PWGEM/Dilepton/Tasks/prefilterDielectron.cxx
+++ b/PWGEM/Dilepton/Tasks/prefilterDielectron.cxx
@@ -109,7 +109,8 @@ struct prefilterDielectron {
     Configurable<float> cfg_max_mass{"cfg_max_mass", 0.0, "max mass for prefilter ULS"}; // region to be rejected
 
     // for phiv prefilter
-    Configurable<bool> cfg_apply_phiv{"cfg_apply_phiv", false, "flag to apply phiv cut"};              // region to be rejected
+    Configurable<bool> cfg_apply_phiv{"cfg_apply_phiv", false, "flag to apply phiv cut for ULS"};      // region to be rejected
+    Configurable<bool> cfg_apply_phiv_ls{"cfg_apply_phiv_ls", false, "flag to apply phiv cut for LS"}; // region to be rejected
     Configurable<float> cfg_phiv_slope{"cfg_phiv_slope", 0.0185, "slope for m vs. phiv"};              // region to be rejected
     Configurable<float> cfg_phiv_intercept{"cfg_phiv_intercept", -0.0280, "intercept for m vs. phiv"}; // region to be rejected
     Configurable<float> cfg_min_phiv{"cfg_min_phiv", -1.f, "min phiv"};                                // region to be rejected
@@ -421,6 +422,11 @@ struct prefilterDielectron {
         fRegistry.fill(HIST("Pair/before/lspp/hMvsPhiV"), phiv, v12.M());
         fRegistry.fill(HIST("Pair/before/lspp/hDeltaEtaDeltaPhi"), dphi, deta);
 
+        if (dielectroncuts.cfg_apply_phiv_ls && ((v12.M() < dielectroncuts.cfg_phiv_slope * phiv + dielectroncuts.cfg_phiv_intercept) && (dielectroncuts.cfg_min_phiv < phiv && phiv < dielectroncuts.cfg_max_phiv))) {
+          map_pfb[pos1.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS);
+          map_pfb[pos2.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS);
+        }
+
         if (dielectroncuts.cfg_apply_detadphi_ls && std::pow(deta / dielectroncuts.cfg_min_deta_ls, 2) + std::pow(dphi / dielectroncuts.cfg_min_dphi_ls, 2) < 1.f) {
           map_pfb[pos1.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS);
           map_pfb[pos2.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS);
@@ -445,6 +451,11 @@ struct prefilterDielectron {
         fRegistry.fill(HIST("Pair/before/lsmm/hMvsPhiV"), phiv, v12.M());
         fRegistry.fill(HIST("Pair/before/lsmm/hDeltaEtaDeltaPhi"), dphi, deta);
 
+        if (dielectroncuts.cfg_apply_phiv_ls && ((v12.M() < dielectroncuts.cfg_phiv_slope * phiv + dielectroncuts.cfg_phiv_intercept) && (dielectroncuts.cfg_min_phiv < phiv && phiv < dielectroncuts.cfg_max_phiv))) {
+          map_pfb[ele1.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS);
+          map_pfb[ele2.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kPhiVLS);
+        }
+
         if (dielectroncuts.cfg_apply_detadphi_ls && std::pow(deta / dielectroncuts.cfg_min_deta_ls, 2) + std::pow(dphi / dielectroncuts.cfg_min_dphi_ls, 2) < 1.f) {
           map_pfb[ele1.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS);
           map_pfb[ele2.globalIndex()] |= 1 << static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonPrefilterBitDerived::kSplitOrMergedTrackLS);
diff --git a/PWGEM/Dilepton/Utils/PairUtilities.h b/PWGEM/Dilepton/Utils/PairUtilities.h
index f250ef8aa98..cf18d5675e9 100644
--- a/PWGEM/Dilepton/Utils/PairUtilities.h
+++ b/PWGEM/Dilepton/Utils/PairUtilities.h
@@ -71,10 +71,11 @@ enum class DileptonPrefilterBit : int {
 };
 
 enum class DileptonPrefilterBitDerived : int {
-  kMee = 0,                   // reject tracks from pi0 dalitz decays at very low mass where S/B > 1
+  kMee = 0,                   // reject tracks from pi0 dalitz decays at very low mass
   kPhiV = 1,                  // reject tracks from photon conversions
   kSplitOrMergedTrackLS = 2,  // reject split or marged tracks in LS pairs based on momentum deta-dphi at PV
   kSplitOrMergedTrackULS = 3, // reject split or marged tracks in ULS pairs based on momentum deta-dphi at PV
+  kPhiVLS = 4,                // reject suspicious tracks. e.g. duplicated tracks or wrongly matched ITS-TPC tracks. Check mee vs. phiv.
 };
 
 using SMatrix55 = ROOT::Math::SMatrix<double, 5, 5, ROOT::Math::MatRepSym<double, 5>>;