Multiplicity dependence of charged particle, φ meson, and multi-strange particle productions in p plus p collisions at √s=200 GeV from PYTHIA simulation

作者：Zhang, Sheng-Hui; Zhou, Long; Zhang, Yi-Fei^*; Zhang, Ming-Wei; Li, Cheng; Shao, Ming; Sun, Yong-Jie; Tang, Ze-Bo

来源：Nuclear Science and Techniques, 2018, 29(9): 136.

DOI：10.1007/s41365-018-0469-y

• Particle production
• Heavy-ion collisions
• Small system
• Multiple parton interactions
• Gluon contributions

We report the multiplicity dependence of charged particle production for the pi(+/-), K-+/-, p, (p) over bar, and phi mesons at vertical bar y vertical bar <1.0 in p + p collisions at root s = 200 GeV from a PYTHIA simulation. The impact of multiple parton interactions and gluon contributions is studied and found to be a possible source of the splitting of the particle yields as a function of p(T) with respect to the multiplicity. No obvious particle species dependence of the splitting is observed. The multiplicity dependence of the ratios K-/pi(-), K+/pi(+), (p) over bar/pi(-), p/pi(+), and K-s(0), at mid-rapidity in p + p collisions is found to follow a tendency similar to that in Au + Au collisions at root s(NN) = 200 GeV at the Relativistic Heavy Ion Collider, indicating similar underlying initial production mechanisms despite the differences in the initial colliding systems.

• 出版日期2018-9
• 单位中国科学技术大学