TString sT0[nT0] = {"fTime0-t0","fTime0-t0+z0*TMath::Sign(1,tOrig.Eta())/vdrift"};
TString sT02D[nT02D] = {"fTime0-t0+z0*TMath::Sign(1,tOrig.Eta())/vdrift:tOrig.fP[3]","fTime0-t0+z0*TMath::Sign(1,tOrig.Eta())/vdrift:tOrig.fP[4]"};
TString sTrackParams[nTrackParams] = {"track.fP[0]-tOrig.fP[0]","track.fP[1]-tOrig.fP[1]","track.fP[2]-tOrig.fP[2]","track.fP[3]-tOrig.fP[3]","track.fP[4]-tOrig.fP[4]","track.fAlpha-tOrig.fAlpha","track.fX/tOrig.fX","track.fY/tOrig.fY","track.fZ/tOrig.fZ"};
TString sT0[nT0] = {"fTime0-t0","fTime0-t0+z0*TMath::Sign(1,tOrig.Eta())/vdrift"};
TString sT02D[nT02D] = {"fTime0-t0+z0*TMath::Sign(1,tOrig.Eta())/vdrift:tOrig.fP[3]","fTime0-t0+z0*TMath::Sign(1,tOrig.Eta())/vdrift:tOrig.fP[4]"};
TString sTrackParams[nTrackParams] = {"track.fP[0]-tOrig.fP[0]","track.fP[1]-tOrig.fP[1]","track.fP[2]-tOrig.fP[2]","track.fP[3]-tOrig.fP[3]","track.fP[4]-tOrig.fP[4]","track.fAlpha-tOrig.fAlpha","track.fX/tOrig.fX","track.fY/tOrig.fY","track.fZ/tOrig.fZ"};