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| Author(s): |
Renan Nobuyuki Hirayama
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Física (IF/SBI) |
| Defense date: | 2021-03-25 |
| Examining board members: |
Frederique Marie Brigitte Sylvie Grassi;
Jacquelyn Michelle Noronha Hostler;
Weiliang Qian
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| Advisor: | Frederique Marie Brigitte Sylvie Grassi |
| Abstract | |
This work consists in the development and study of a new method to compute cumulants of conserved quantities in heavy-ion collision simulations. Such cumulants are sensitive to the presence of the Critical End Point (CP) of Quantum Chromodynamics (QCD), and therefore serve as key observables in the ongoing attempt to experimentally scan the QCD phase diagram and locate the CP, in experiments as the Beam Energy Scan, in event-by-event analysis which require a large statistic. The significant computational cost of 3+1 dimensional hydrodynamical simulations hinders the obtaining of such statistics in a reasonable time, being one of the reasons for the low amount or nonexistence of publications on these cumulants that use full hydrodynamics. The data-driven method developed in this work has the objective of circumventing this problem, diminishing the number of events needed for a good precision. To do so, the NeXSPheRIO code is used, and preliminary results are compared to data from STAR, with the higher-order cumulants showing promise. (AU) | |
| FAPESP's process: | 18/14479-0 - Exploring the phase diagram of the quark-gluon plasma with fluctuations on the net amount of protons on the Beam Energy Scan |
| Grantee: | Renan Nobuyuki Hirayama |
| Support Opportunities: | Scholarships in Brazil - Master |