This routine fills common /ZAPRN/, containing information on the long-lived (ie. such flying detectably far from the main vertex before decaying) parents of seen particles.
none.
From /ZAEVT/ : TTRK, total # of tracks; NJET, # of jets. From /ZATRS/ : RDEC,true radius of production; VERT,production vertex pos. of track; PPAR,momentum of parent of track; ANC,Number of the heavy flavour ancestor of the track; CLGHistory class of track; PVEC,true momentum of track; JETNB,jet number of the track. TRACK is used locally. From /ZAJET/ : JETTYP, jet type.
To /ZATRS/ : PARNB, Parent-number in /ZAPRN/; To /ZAPRN/ : All variables set here : NDEC, Number of 'flying' decayed particles; DECCL, class of decay (cf /ZATRS/); JETDEC, Jet that first decay product belongs to; PANC, Ultimate ancestor of particle.; PPARNB, Pointer to parents of decayed particles.; KIDNB, to kids in /ZATRS/ (stable kids); PKIDNB, to kids in /ZAPRN/ itself (unstable kids); PDEC, Momentum decayed particle; RDECP, Radius of decay; NPROD, Number of stable decay-products; PNPROD, Number of unstable decay-products; PRODV, decay-point; PCHP, of true 4-momentum of decay products. To /ZAJET/ : HF1DEC, 1:st heavy flavour decay point; HF2DEC, sec. heavy flavour decay point; HFCHP, sum p of decay-products of h.f.; HFP1; 1:st heavy flavour momentum; HFP2, sec. heavy flavour momentum; DC1, decay-class of 1:st h.f. decay; DC2, decay-class of 2:nd h.f. decay; NHFP, number of h.f. decay products.