[PWGLF] [PWGLF} lambdalambda.cxx: add rapidity selection for rotational bkg (#17293)

jikim1290 · web-flow · commit 54ca98afa511 · 2026-08-03T09:02:07.000+02:00
diff --git a/PWGLF/Tasks/Strangeness/lambdalambda.cxx b/PWGLF/Tasks/Strangeness/lambdalambda.cxx
@@ -527,6 +527,9 @@ struct lambdalambda {
                 RanPhi += RecoV02.Phi();
                 RecoV02Rot = ROOT::Math::PxPyPzMVector(RecoV02.Pt() * std::cos(RanPhi), RecoV02.Pt() * std::sin(RanPhi), RecoV02.Pz(), RecoV02.M());
                 RecoV0V0Rot = RecoV01 + RecoV02Rot;
+                if (std::abs(RecoV0V0Rot.Rapidity()) > cfgV0V0RapMax)
+                  continue;
+
                 histos.fill(HIST("h_InvMass_rot"), RecoV0V0Rot.M(), RecoV0V0Rot.Pt(), centrality, V01Tag + V02Tag);
               }
             }

Original file line number	Diff line number	Diff line change
`@@ -527,6 +527,9 @@ struct lambdalambda {`
`527`	`527`	`RanPhi += RecoV02.Phi();`
`528`	`528`	`RecoV02Rot = ROOT::Math::PxPyPzMVector(RecoV02.Pt() * std::cos(RanPhi), RecoV02.Pt() * std::sin(RanPhi), RecoV02.Pz(), RecoV02.M());`
`529`	`529`	`RecoV0V0Rot = RecoV01 + RecoV02Rot;`
	`530`	`+ if (std::abs(RecoV0V0Rot.Rapidity()) > cfgV0V0RapMax)`
	`531`	`+ continue;`
	`532`	`+`
`530`	`533`	`histos.fill(HIST("h_InvMass_rot"), RecoV0V0Rot.M(), RecoV0V0Rot.Pt(), centrality, V01Tag + V02Tag);`
`531`	`534`	`}`
`532`	`535`	`}`