[PWGLF] Modification to efficiency fit (#8810)

Author: jmunozme

PWGMM/UE/Tasks/uecharged.cxx

@@ -198,7 +198,7 @@ void ueCharged::init(InitContext const&)
   ConfigurableAxis ptBinning{"ptBinning", {0, 0.0, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 12.0, 14.0, 16.0, 18.0, 20.0, 25.0, 30.0, 40.0, 50.0}, "pTassoc bin limits"};
   AxisSpec ptAxis = {ptBinning, "#it{p}_{T}^{assoc} (GeV/#it{c})"};
 
-  f_Eff.setObject(new TF1("fpara", "(x<0.3)*((0.221456)+x*(3.4271)+x*x*(-6.7668))+(x>=0.3&&x<2.1)*((0.610649)+(0.148627)*x+(-0.0772185)*x*x+(0.0157586)*x*x*x)+(x>=2.1)*(0.726557)", 0., 1e5));
+  f_Eff.setObject(new TF1("fpara", "(x<0.3)*((0.283781)+x*(3.0492)+x*x*(-6.17018)) + (x>=0.3&&x<1.8)*((0.597121)+(0.200737)*x+(-0.11255)*x*x+(0.0242807)*x*x*x) + (x>=1.8&&x<14.)*((0.729892)+(0.0018516)*x+(0.000257896)*x*x+(-2.05202e-05)*x*x*x) + (x>=14)*(0.749313)", 0., 1e5));
 
   if (doprocessMC) {
     ue.add("hPtOut", "pT all rec; pT; Nch", HistType::kTH1D, {ptAxis});