Same for Psi2S

Author: Maurice Coquet

MC/config/PWGDQ/external/generator/GeneratorPromptCharmonia.C

@@ -1016,7 +1016,7 @@ class O2_GeneratorParamPsipp96TeV : public GeneratorTGenerator
     paramPsi = new GeneratorParam(1, -1, PtPsipp96TeV, YPsipp96TeV, V2Psipp96TeV, IpPsipp96TeV);
     paramPsi->SetMomentumRange(0., 1.e6);
     paramPsi->SetPtRange(0, 999.);
-    paramPsi->SetYRange(-4.2, -2.3);
+    paramPsi->SetYRange(-4.2, -2.0);
     paramPsi->SetPhiRange(0., 360.);
     paramPsi->SetDecayer(new TPythia6Decayer());
     paramPsi->SetForceDecay(kNoDecay); // particle left undecayed
@@ -1130,11 +1130,13 @@ class O2_GeneratorParamJpsiPbPb5TeV : public GeneratorTGenerator
   {
     // jpsi y in PbPb, tuned on data (2015) -> Castillo embedding https://alice.its.cern.ch/jira/browse/ALIROOT-8174?jql=text%20~%20%22LHC19a2%22
     Double_t y = *py;
+    Double_t deltaY = 0.35;
+    Double_t yCM = y - deltaY;
     Float_t p0, p1, p2;
     p0 = 1.09886e6;
     p1 = 0;
     p2 = 2.12568;
-    return p0 * TMath::Exp(-(1. / 2.) * TMath::Power(((y - p1) / p2), 2));
+    return p0 * TMath::Exp(-(1. / 2.) * TMath::Power(((yCM - p1) / p2), 2));
   }
 
   //-------------------------------------------------------------------------//