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

Abstract

We report the multiplicity dependence of charged particle productions for ${\pi }^{\pm }$, $K^{\pm }$, $p$, $\overline{p}$ and $\varphi$ meson at $|y|<1.0$ in p+p collisions at $\sqrt{\mathrm{s}}$ = 200 GeV with $\mathrm{PYTHIA}$ 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 $\Lambda /K_s^0$ 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.

arXiv comment6 pages, 11 figures

References in corpus (13)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Enhanced production of multi-strange hadrons in high-multiplicity proton-proton collisions
• First Results from Pb+Pb collisions at the LHC
• Identified particle distributions in pp and Au+Au collisions at sqrt{s_NN}=200 GeV
• K${}_{\mathrm{S}}^0$ and $\mathrm{\Lambda }$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Heavy Ion Collisions: Achievements and Challenges
• Strangeness Enhancement in Cu+Cu and Au+Au Collisions at \sqrt{s_{NN}} = 200 GeV
• Hadronization via Coalescence
• $\varphi$-meson production at forward/backward rapidity in high-energy nuclear collisions from a multiphase transport model
• Identified particle production in pp collisions at $\sqrt{s}=$ 7 and 13 TeV measured with ALICE

Cited by in corpus (4)

• Effective (kinetic freeze-out) temperature, transverse flow velocity and kinetic freeze-out volume in high energy collisions
• Production of $\Omega NN$ and $\Omega \Omega N$ in ultra-relativistic heavy ion collisions
• Measuring neutron skin by grazing isobaric collisions
• Multiplicity Dependence of J/$\psi$ Production and QCD Dynamics in $p+p$ Collisions at $\sqrt{s}$ = 13 TeV