14 Particle Production and Collective Phenomena in Heavy-Ion …
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Fig. 14.10 The particles yield ratios as a function of multiplicity d N ch /dη for pp, p–Pb, and
Pb–Pb collisions. The top panels with labels a, b, and c show (p + ¯
p)/φ ratio; panels with labels d,
e, and f show (K + + K − )/(π + + π − ) ratio, panels with labels g, h, and i show (p + ¯
p)/(π + + π − )
ratio; and bottom panels with labels j, k, and l show 0
S ratios for low p T interval (left column),
mid p T interval (middle column), and high p T interval (right column) [13, 15, 36–38]