  We investigate whether the quark gluon plasma (QGP) is created in small
colliding systems from analyses of various hadron yields and their ratios in
proton-proton (p+p), proton-lead (p+Pb) and lead-lead (Pb+Pb) collisions at LHC
energies. Recently, the ALICE Collaboration reports enhancement of yield ratio
of multi-strange hadrons to charged pions as a function of multiplicity at
mid-rapidity. Motivated by these results, we develop the dynamical core-corona
initialization framework and find that our results describe tendencies of the
ALICE data especially for multi-strange hadrons. These results indicate that
the QGP is partly formed in high multiplicity events in small colliding
systems.
