Cumulants of net-strangeness multiplicity distributions at energies available at the BNL Relativistic Heavy Ion Collider
2022
Online
report
The higher-order cumulants of net-proton number, net-charge, and net-strangeness multiplicity distributions are widely studied to search for the quantum-chromodynamics critical point and extract the chemical freeze-out parameters in heavy-ion collisions. In this context, the event-by-event fluctuations of the net-strangeness multiplicity distributions play important roles in extracting the chemical freeze-out parameter in the strangeness sector. Due to having difficulties in detecting all strange hadrons event by event, the kaon ($K$) and lambda ($\Lambda$) particles serve as a proxy for the strangeness-related observables in heavy-ion collisions. We have studied the net-$K$, net-$\Lambda$, and net-($K$ + $\Lambda$) multiplicity distributions and calculated their different order of cumulants using the ultrarelativistic quantum molecular dynamics model and hadron resonance gas calculation. To adequately account for the net-strangeness cumulants, it has been found that the inclusion of resonance decay contributions in $K$ and $\Lambda$ is necessary.
Comment: The title has been modified. Updated following the published version
Titel: |
Cumulants of net-strangeness multiplicity distributions at energies available at the BNL Relativistic Heavy Ion Collider
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Autor/in / Beteiligte Person: | Li, Changfeng ; Biswas, Deeptak ; Sahoo, Nihar Ranjan |
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Veröffentlichung: | 2022 |
Medientyp: | report |
DOI: | 10.1103/PhysRevC.107.064905 |
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