[Clas12_verystrange] [EXTERNAL] Spring 2019 electron energy corrections

[Asli Acar]

Dear all, 

Please find the energy correction function for Spring 2019 below, and feel free to reach out to me if you have any questions/issues. Just a reminder, the fall 2018 energy correction I sent before SHOULD NOT be applied to spring 2019, because the run conditions differ. 

Thanks, 
Asli

TLorentzVector  Correct_Electron(TLorentzVector x){

  Double_t E_new, E_new_further_corrected, Px_el, Py_el, Pz_el;
  TLorentzVector el_new;

  E_new = x.E() + 0.085643 - 0.0288063*x.E() + 0.00894691*pow(x.E(),2) - 0.000725449*pow(x.E(),3);
  
  Px_el = E_new*(x.Px()/x.Rho());
  Py_el = E_new*(x.Py()/x.Rho());
  Pz_el = E_new*(x.Pz()/x.Rho());

  el_new.SetXYZM(Px_el, Py_el, Pz_el, 0.000511);

  return el_new;
}
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