Title: Inclusive Hadron Yield Analysis in Small and Mid-sized Collision Systems at s_nn=200 GeV at STAR

PAs: Tong Liu (Yale), Helen Caines (Yale), Rongrong Ma (BNL), Maowu Nie (SDU), Yi Li (SDU)

GPC:

Target journal: PRC

Abstract: In this paper, we report measurements of charged hadron yields and the nuclear modification factor Raa /Rpa in Ru+Ru, Zr+Zr and p+Au collisions at s_nn=200 GeV with the STAR detector at RHIC. In p+Au collisions, an enhancement relative to p+p yields is reported. In Ru+Ru/Zr+Zr collisions, significant suppression is seen in central collisions, which gradually weakens moving to more peripheral collisions. The magnitude of this nuclear suppression factor at sqrt(s_NN) =200 GeV is shown to depend linearly on the number of participants in the collision, independent of species collided. Finally, it is demonstrated that an apparent increase in the suppression in the most peripheral collisions is due to a trigger bias, and the implications of this bias are discussed using the Glauber model.

PWGC Review: link

Analysis note: link

Paper draft:

proposed figures:

Physics messages:

Conclusions: