High pT suppression: particle dependence (II)

Central colls.: p/π ~ 0.8 (at pT = 2 - 4.5 GeV/c) at variance with perturbative production mechanisms (favour lightest meson).
Periph. colls.: p/π ~ 0.2 as in p+p,pbar (ISR,FNAL) & in e+e- jet fragmentation
Charged hadron and π0 equally suppressed above pT ~ 5 GeV/c:
h/π ~ 1.6 as in p+p (perturbative ratio).
Since h± = π± + p(pbar) + K±  baryon enhancement limited to pT < 4.5 GeV/c

Central colls.: p/π ~ 0.8 (at pT = 2 - 4.5 GeV/c) at variance with perturbative production mechanisms (favour lightest meson).