Strangeness Enhancement in Proton-Proton Collisions at the RHIC Energy
Strangeness enhancement is considered as a potential signature for QGP phase transition. Here we claim the observation of strangeness enhancement in proton-proton (pp) collisions at RHIC energy saying the de-confinement phase is reached. The deep study of matter phase transitions and dynamics of strangeness creation has been preformed for $K_{s}^{+}(u\bar{s})$ and $K_{s}^{-}(s\bar{u})$ mesons, $Λ^{0}(uds)$ baryon and for multi-strange baryons $Ξ^{0}(uss)$, $Ξ^{-}(dss)$ and $Ω^{-}(sss)$ production. The analysis of datasets for the strange and multi-strange hadrons production is presented at $\sqrt{s} =$ 200 GeV as reported by the PYTHIA 8 event generator simulations. We preform the transverse momentum distributions of the strange and multi-strange hadrons for high and low multiplicity events. At the RHIC energy and for pp collisions, the strangeness content yield increases with the event multiplicity.