Multiplicity Dependence of Charged Particle, $phi$ Meson and Multi-strange Particle Productions in p+p Collisions at $sqrt{rm s}$ = 200 GeV with PYTHIA Simulation

We report the multiplicity dependence of charged particle productions for $pi^{pm}$, $K^{pm}$, $p$, $overline{p}$ and $phi$ meson at $|y| < 1.0$ in p+p collisions at $sqrt{rm s}$ = 200 GeV with $rm PYTHIA$ simulation. The impact of parton multiple interactions and gluon contributions is studied and found to be possible sources of the particle yields splitting as a function of $p_T$ with respect to multiplicity. No obvious particle species dependence for the splitting is observed. The multiplicity dependence on ratios of $K^-/pi^-$, $K^+/pi^+$, $overline{p}/pi^-$, $p/pi^+$ and $Lambda/K^{0}_{s}$ in mid-rapidity in p+p collisions is found following the similar tendency as that in Au+Au collisions at $sqrt{s_{NN}}$ = 200 GeV from RHIC, which heralds the similar underlying initial production mechanisms despite the differences in the initial colliding systems.