Separating non-collective effects in d-Au collisions

Abstract In this work, we present the multiplicity and yield of charged hadrons and particle ratios in d-Au collisions at $$\sqrt{s_{NN}}= 200$$ s NN = 200 GeV using the PYTHIA8/Angantyr. The model reproduces the multiplicity ( $$N_{ch}$$ N ch ) and pseudo-rapidity distribution reasonably well in minimum-biased d-Au collisions without assuming the formation of a thermalized medium. The invariant yield from Angantyr underpredicts the data in central collisions. We discussed the similarity between the nuclear modification factor $$R_{AA}$$ R AA and data/MC from Angantyr and the possibility of using it as a model-dependent observable to check in-medium effects. The data/MC suggests that the central d-Au collisions exhibit signals like baryon enhancement, but no high $$p_T$$ p T suppression was found. The d-Au collisions have a much smaller invariant yield than the thermal model calculation for similar $$N_{part}$$ N part .