Charged particle multiplicity fluctuation in $A-A$ collisions at RHIC and LHC energies using Angantyr model
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866917603596828672 |
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| author | Bhowmick, Pritindra Dash, Sadhana Nandi, Basanta Pruneau, Claude |
| author_facet | Bhowmick, Pritindra Dash, Sadhana Nandi, Basanta Pruneau, Claude |
| contents | Event-by-event fluctuations of the charged particle multiplicity are studied for a wide range of centralities for Au$-$Au collisions at $\sqrt{s_{NN}}$ = 200 GeV,
Pb$-$Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV and 5.02 TeV using the Pythia 8 Angantyr model. The centrality dependence of $ω_{ch}$ observable, which quantifies the fluctuations in terms of scaled variance is studied for different pseudorapidity ranges and has been compared with those obtained from a simple participant superposition model. The $ω_{ch}$ was found to be lower than the expectations from the participant model. The estimate would act like a baseline for current and future measurements of event-by-event fluctuations in the charged particle multiplicities in systems at LHC energies where no de-confined medium of quarks and gluons are formed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_01833 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Charged particle multiplicity fluctuation in $A-A$ collisions at RHIC and LHC energies using Angantyr model Bhowmick, Pritindra Dash, Sadhana Nandi, Basanta Pruneau, Claude High Energy Physics - Phenomenology Event-by-event fluctuations of the charged particle multiplicity are studied for a wide range of centralities for Au$-$Au collisions at $\sqrt{s_{NN}}$ = 200 GeV, Pb$-$Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV and 5.02 TeV using the Pythia 8 Angantyr model. The centrality dependence of $ω_{ch}$ observable, which quantifies the fluctuations in terms of scaled variance is studied for different pseudorapidity ranges and has been compared with those obtained from a simple participant superposition model. The $ω_{ch}$ was found to be lower than the expectations from the participant model. The estimate would act like a baseline for current and future measurements of event-by-event fluctuations in the charged particle multiplicities in systems at LHC energies where no de-confined medium of quarks and gluons are formed. |
| title | Charged particle multiplicity fluctuation in $A-A$ collisions at RHIC and LHC energies using Angantyr model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2403.01833 |