Hadron composition at high-pT (III): h/p ratio

• Central colls.: h/p ~ 2.5 at intermediate pT's (enhanced baryon production)

• Peripheral colls.: h/p ~ 1.6 as in p+p (perturbative ratio)

• Since h± = π± + p(pbar) + K±  baryon non perturbative enhancement limited

  • to pT < 5 GeV/c

Notes: