diff --git a/PWGUD/Tasks/CMakeLists.txt b/PWGUD/Tasks/CMakeLists.txt
index bfe050bbe04..55f69f53d26 100644
--- a/PWGUD/Tasks/CMakeLists.txt
+++ b/PWGUD/Tasks/CMakeLists.txt
@@ -303,3 +303,8 @@ o2physics_add_dpl_workflow(pt-spectra-inclusive-upc
                            SOURCES ptSpectraInclusiveUpc.cxx
                            PUBLIC_LINK_LIBRARIES O2::Framework O2Physics::AnalysisCore
                            COMPONENT_NAME Analysis)
+
+o2physics_add_dpl_workflow(sg-deuteron-spectra
+                           SOURCES sgDeuteronSpectra.cxx
+                           PUBLIC_LINK_LIBRARIES O2::Framework O2Physics::AnalysisCore
+                           COMPONENT_NAME Analysis)
diff --git a/PWGUD/Tasks/sgDeuteronSpectra.cxx b/PWGUD/Tasks/sgDeuteronSpectra.cxx
new file mode 100644
index 00000000000..52532c2a0f5
--- /dev/null
+++ b/PWGUD/Tasks/sgDeuteronSpectra.cxx
@@ -0,0 +1,163 @@
+// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
+// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
+// All rights not expressly granted are reserved.
+//
+// This software is distributed under the terms of the GNU General Public
+// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
+//
+// In applying this license CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+//
+// \Single Gap Event Analyzer for (anti)deuteron production
+// \author Marika Rasa, marika.rasa@cern.ch
+// \since  September 2026
+
+#include "PWGUD/Core/SGSelector.h"
+#include "PWGUD/Core/SGTrackSelector.h"
+#include "PWGUD/DataModel/UDTables.h"
+
+#include <Framework/ASoA.h>
+#include <Framework/AnalysisTask.h>
+#include <Framework/Configurable.h>
+#include <Framework/HistogramRegistry.h>
+#include <Framework/HistogramSpec.h>
+#include <Framework/InitContext.h>
+#include <Framework/runDataProcessing.h>
+
+#include <vector>
+
+using namespace o2;
+using namespace o2::framework;
+using namespace o2::framework::expressions;
+
+struct SGDeuteronSpectra {
+  // UPC cuts
+  SGSelector sgSelector;
+  Configurable<float> FV0_cut{"FV0", 50., "FV0A threshold"};
+  Configurable<float> ZDC_cut{"ZDC", 10., "ZDC threshold"};
+  Configurable<float> FT0A_cut{"FT0A", 150., "FT0A threshold"};
+  Configurable<float> FT0C_cut{"FT0C", 50., "FT0C threshold"};
+  Configurable<float> FDDA_cut{"FDDA", 10000., "FDDA threshold"};
+  Configurable<float> FDDC_cut{"FDDC", 10000., "FDDC threshold"};
+
+  // Track cuts
+  Configurable<float> PV_cut{"PV_cut", 1.0, "Use Only PV tracks"};
+  Configurable<float> dcaZ_cut{"dcaZ_cut", 2.0, "dcaZ cut"};
+  Configurable<float> dcaXY_cut{"dcaXY_cut", 0.0, "dcaXY cut (0 for Pt-function)"};
+  Configurable<float> tpcChi2_cut{"tpcChi2_cut", 4, "Max tpcChi2NCl"};
+  Configurable<float> tpcNClsFindable_cut{"tpcNClsFindable_cut", 70, "Min tpcNClsFindable"};
+  Configurable<float> itsChi2_cut{"itsChi2_cut", 36, "Max itsChi2NCl"};
+  Configurable<float> eta_cut{"eta_cut", 0.9, "Track Pseudorapidity"};
+  Configurable<float> pt_cut{"pt_cut", 0.1, "Track Pt"};
+
+  // Configurable axis for histograms
+  ConfigurableAxis ptAxis{"ptAxis", {200, 0.0, 10.0}, "p_{T}"};
+  ConfigurableAxis nsigmaAxis{"nSigmaAxis", {800, -20.0, 20.0}, "nSigma axis for TPC and TOF"};
+
+  // Initialize histogram registry
+  HistogramRegistry registry{"registry", {}};
+
+  void init(InitContext&)
+  {
+    const AxisSpec axispt{ptAxis, "p_{T}"};
+    const AxisSpec axistpc{nsigmaAxis, "n#sigma_{TPC}"};
+    const AxisSpec axistof{nsigmaAxis, "n#sigma_{TOF}"};
+
+    // Collision histograms
+    registry.add("collisions/GapSide", "Gap Side: A, C, A+C", {HistType::kTH1F, {{3, -0.5, 2.5}}});
+    registry.add("collisions/TrueGapSide", "Gap Side: A, C, A+C", {HistType::kTH1F, {{4, -1.5, 2.5}}});
+    registry.add("tracks/Deut_Pt_TPC_GapA", "", {HistType::kTH2F, {axispt, axistpc}});
+    registry.add("tracks/Deut_Pt_TOF_GapA", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Deut_Pt_TOF_GapA_TPCpresel", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Antideut_Pt_TPC_GapA", "", {HistType::kTH2F, {axispt, axistpc}});
+    registry.add("tracks/Antideut_Pt_TOF_GapA", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Antideut_Pt_TOF_GapA_TPCpresel", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Deut_Pt_TPC_GapC", "", {HistType::kTH2F, {axispt, axistpc}});
+    registry.add("tracks/Deut_Pt_TOF_GapC", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Deut_Pt_TOF_GapC_TPCpresel", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Antideut_Pt_TPC_GapC", "", {HistType::kTH2F, {axispt, axistpc}});
+    registry.add("tracks/Antideut_Pt_TOF_GapC", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Antideut_Pt_TOF_GapC_TPCpresel", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Deut_Pt_TPC_DoubleGap", "", {HistType::kTH2F, {axispt, axistpc}});
+    registry.add("tracks/Deut_Pt_TOF_DoubleGap", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Deut_Pt_TOF_DoubleGap_TPCpresel", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Antideut_Pt_TPC_DoubleGap", "", {HistType::kTH2F, {axispt, axistpc}});
+    registry.add("tracks/Antideut_Pt_TOF_DoubleGap", "", {HistType::kTH2F, {axispt, axistof}});
+    registry.add("tracks/Antideut_Pt_TOF_DoubleGap_TPCpresel", "", {HistType::kTH2F, {axispt, axistof}});
+  }
+
+  // Define data types
+  using UDCollisionsFull = soa::Join<aod::UDCollisions, aod::SGCollisions, aod::UDCollisionsSels, aod::UDZdcsReduced>; // UDCollisions
+  using UDCollisionFull = UDCollisionsFull::iterator;
+  using UDTracksFull = soa::Join<aod::UDTracks, aod::UDTracksPID, aod::UDTracksPIDExtra, aod::UDTracksExtra, aod::UDTracksFlags, aod::UDTracksDCA>;
+
+  void process(UDCollisionFull const& coll, UDTracksFull const& tracks)
+  {
+    registry.fill(HIST("collisions/GapSide"), coll.gapSide(), 1.);
+    float FIT_cut[5] = {FV0_cut, FT0A_cut, FT0C_cut, FDDA_cut, FDDC_cut};
+    int truegapSide = sgSelector.trueGap(coll, FIT_cut[0], FIT_cut[1], FIT_cut[2], ZDC_cut);
+    registry.fill(HIST("collisions/TrueGapSide"), truegapSide, 1.);
+
+    std::vector<float> parameters = {PV_cut, dcaZ_cut, dcaXY_cut, tpcChi2_cut, tpcNClsFindable_cut, itsChi2_cut, eta_cut, pt_cut};
+
+    for (const auto& t : tracks) {
+      if (trackselector(t, parameters)) {
+        if (truegapSide == 0) {
+          if (t.sign() > 0) {
+            registry.fill(HIST("tracks/Deut_Pt_TPC_GapA"), t.pt(), t.tpcNSigmaDe());
+            registry.fill(HIST("tracks/Deut_Pt_TOF_GapA"), t.pt(), t.tofNSigmaDe());
+            if (TMath::Abs(t.tpcNSigmaDe()) < 3.0) {
+              registry.fill(HIST("tracks/Deut_Pt_TOF_GapA_TPCpresel"), t.pt(), t.tofNSigmaDe());
+            }
+          } else {
+            registry.fill(HIST("tracks/Antideut_Pt_TPC_GapA"), t.pt(), t.tpcNSigmaDe());
+            registry.fill(HIST("tracks/Antideut_Pt_TOF_GapA"), t.pt(), t.tofNSigmaDe());
+            if (TMath::Abs(t.tpcNSigmaDe()) < 3.0) {
+              registry.fill(HIST("tracks/Antideut_Pt_TOF_GapA_TPCpresel"), t.pt(), t.tofNSigmaDe());
+            }
+          }
+        }
+
+        if (truegapSide == 1) {
+          if (t.sign() > 0) {
+            registry.fill(HIST("tracks/Deut_Pt_TPC_GapC"), t.pt(), t.tpcNSigmaDe());
+            registry.fill(HIST("tracks/Deut_Pt_TOF_GapC"), t.pt(), t.tofNSigmaDe());
+            if (TMath::Abs(t.tpcNSigmaDe()) < 3.0) {
+              registry.fill(HIST("tracks/Deut_Pt_TOF_GapC_TPCpresel"), t.pt(), t.tofNSigmaDe());
+            }
+          } else {
+            registry.fill(HIST("tracks/Antideut_Pt_TPC_GapC"), t.pt(), t.tpcNSigmaDe());
+            registry.fill(HIST("tracks/Antideut_Pt_TOF_GapC"), t.pt(), t.tofNSigmaDe());
+            if (TMath::Abs(t.tpcNSigmaDe()) < 3.0) {
+              registry.fill(HIST("tracks/Antideut_Pt_TOF_GapC_TPCpresel"), t.pt(), t.tofNSigmaDe());
+            }
+          }
+        }
+
+        if (truegapSide == 2) {
+          if (t.sign() > 0) {
+            registry.fill(HIST("tracks/Deut_Pt_TPC_DoubleGap"), t.pt(), t.tpcNSigmaDe());
+            registry.fill(HIST("tracks/Deut_Pt_TOF_DoubleGap"), t.pt(), t.tofNSigmaDe());
+            if (TMath::Abs(t.tpcNSigmaDe()) < 3.0) {
+              registry.fill(HIST("tracks/Deut_Pt_TOF_DoubleGap_TPCpresel"), t.pt(), t.tofNSigmaDe());
+            }
+          } else {
+            registry.fill(HIST("tracks/Antideut_Pt_TPC_DoubleGap"), t.pt(), t.tpcNSigmaDe());
+            registry.fill(HIST("tracks/Antideut_Pt_TOF_DoubleGap"), t.pt(), t.tofNSigmaDe());
+            if (TMath::Abs(t.tpcNSigmaDe()) < 3.0) {
+              registry.fill(HIST("tracks/Antideut_Pt_TOF_DoubleGap_TPCpresel"), t.pt(), t.tofNSigmaDe());
+            }
+          }
+        }
+      }
+    }
+  }
+};
+
+WorkflowSpec defineDataProcessing(ConfigContext const& cfgc)
+{
+  return WorkflowSpec{
+    adaptAnalysisTask<SGDeuteronSpectra>(cfgc, TaskName{"sgdeuteronspectra"}),
+  };
+}