TY  - JOUR
AU  - Nunes da Silva, T.
AU  - Chinellato, D. D.
AU  - Giannini, A. V.
AU  - Takahashi, J.
AU  - Ferreira, M. N.
AU  - Denicol, G. S.
AU  - Hippert, M.
AU  - Noronha, J.
AU  - Luzum, M.
PY  - 2023
DA  - 2023//
TI  - Prehydrodynamic evolution in large and small systems
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 044901
EP  - 12pp
VL  - 107
IS  - 4
PB  - Amer Physical Soc
AB  - We extend our previous investigation of the effects of prehydrodynamic evolution on final-state observables in heavy-ion collisions [38] to smaller systems. We use a state-of-the-art hybrid model for the numerical simulations with optimal parameters obtained from a previous Bayesian study. By studying p-Pb collisions, we find that the effects due to the assumption of a conformal evolution in the prehydrodynamical stage are even more important in small systems. We also show that this effect depends on the time duration of the pre-equilibrium stage, which is further enhanced in small systems. Finally, we show that the recent proposal of a free-streaming with subluminal velocity for the pre-equilibrium stage, thus effectively breaking conformal invariance, can alleviate the contamination of final-state observables. Our study further reinforces the need for moving beyond conformal approaches in pre-equilibrium dynamics modeling, especially when extracting transport coefficients from hybrid models in the high-precision era of heavy-ion collisions.
SN  - 2469-9985
UR  - https://arxiv.org/abs/2211.10561
UR  - https://doi.org/10.1103/PhysRevC.107.044901
DO  - 10.1103/PhysRevC.107.044901
LA  - English
N1  - WOS:000974911400001
ID  - NunesdaSilva_etal2023
ER  -