rebin the histogram due to statistics (AliceO2Group#2495)

Author: zjxiongOvO

PWGDQ/Core/HistogramsLibrary.cxx

@@ -407,7 +407,7 @@ void o2::aod::dqhistograms::DefineHistograms(HistogramManager* hm, const char* h
       hm->AddHistogram(histClass, "Mass_VtxZ", "", true, 30, -15.0, 15.0, VarManager::kVtxZ, 500, 0.0, 5.0, VarManager::kMass);
       hm->AddHistogram(histClass, "cosThetaHE", "", false, 100, -1., 1., VarManager::kCosThetaHE);
       if (subGroupStr.Contains("polarization")) {
-        hm->AddHistogram(histClass, "Mass_Pt_cosThetaHE", "", false, 500, 0.0, 5.0, VarManager::kMass, 250, 0.0, 25.0, VarManager::kPt, 10, -1., 1., VarManager::kCosThetaHE);
+        hm->AddHistogram(histClass, "Mass_Pt_cosThetaHE", "", false, 500, 0.0, 5.0, VarManager::kMass, 250, 0.0, 25.0, VarManager::kPt, 40, -1., 1., VarManager::kCosThetaHE);
       }
       if (subGroupStr.Contains("dalitz")) {
         hm->AddHistogram(histClass, "MassLow", "", false, 500, 0.0, 0.05, VarManager::kMass);