NET BARYON CUMULANTS IN VISCOUS HYDRODYNAMICS

Author(s)

Serenone, Willian M. ; Grassi, Frederique ; Hirayama, Renan ; Ollitrault, Jean-Yves

• Document type: Journal article
• Source: ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT; v. 16, n. 1, p. 6-pg., 2023-01-01.

Abstract

A valuable tool used in the search for QCD's critical point is the computation of cumulants of conserved charge. Near this point, it is expected a sharp increase in this quantity due to the divergence of correlation lengths. This calculation requires high statistics, which poses a challenge to hydrodynamics simulations, which tend to be computationally expensive. The issue can be ameliorated by means of a procedure called oversampling, i.e. one repeats the Monte Carlo step of the particlization many times for a single hydro event. However, this has the drawback of removing the effects of fluctuations caused during the particlization. We use a toy model to demonstrate a method to compute cumulants (developed originally by Grassi, Hirayama, and Ollitrault) in a scenario where the oversampling procedure is employed and proceed to compute it for several collision energies. (AU)

• FAPESP's process: 21/01670-6 - Hydrodynamics for the Beam Energy Scan: 3+1 hydrodynamics with pre-equilibrium phase and hadronic transport
• Grantee: Willian Matioli Serenone
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 18/24720-6 - Exploring the QCD phase diagram
• Grantee: Frédérique Marie Brigitte Sylvie Grassi
• Support Opportunities: Research Projects - Thematic Grants