TLatex* drawEtaLabel(TString minEta, TString maxEta, float x=0.17, float y=0.35, float font_size=0.)
{
  TString label(minEta + " < |#eta| < " + maxEta);
  TLatex *  tex = new TLatex(x, y,label);
  if (font_size > 0.) tex->SetFontSize(font_size);
  tex->SetTextSize(0.05);
  tex->SetNDC();
  tex->Draw();
  return tex;
}