Multiplicity dependence of light nuclei production at LHC energies in the canonical statistical model
| Autor: | Volodymyr Vovchenko, Horst Stoecker, Benjamin Donigus |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Nuclear and High Energy Physics
Nuclear Theory FOS: Physical sciences Strangeness 01 natural sciences Electric charge Nuclear physics temperature [freeze-out] Nuclear Theory (nucl-th) Pion ALICE High Energy Physics - Phenomenology (hep-ph) scattering [heavy ion] 0103 physical sciences Rapidity ddc:530 Nuclear Experiment (nucl-ex) 010306 general physics low [multiplicity] production [light nucleus] Nuclear Experiment conservation law [charge] Physics statistical [model] Large Hadron Collider 010308 nuclear & particles physics saturation Statistical model Multiplicity (mathematics) conservation law [baryon number] yield [light nucleus] lcsh:QC1-999 dependence [multiplicity] High Energy Physics - Phenomenology CERN LHC Coll rapidity chemical [freeze-out] Baryon number multiplicity [pi] lcsh:Physics |
| Zdroj: | Physics Letters Physics Letters B, Vol 785, Iss, Pp 171-174 (2018) Physics letters / B B 785, 171-174 (2018). doi:10.1016/j.physletb.2018.08.041 |
| Popis: | The statistical model with exact conservation of baryon number, electric charge, and strangeness - the Canonical Statistical Model (CSM) - is used to analyze the dependence of yields of light nuclei at midrapidity on charged pion multiplicity at the LHC. The CSM calculations are performed assuming baryon-symmetric matter, using the recently developed Thermal-FIST package. The light nuclei-to-proton yield ratios show a monotonic increase with charged pion multiplicity, with a saturation at the corresponding grand-canonical values in the high-multiplicity limit, in good qualitative agreement with the experimental data measured by the ALICE collaboration in pp and Pb-Pb collisions at different centralities and energies. Comparison with experimental data at low multiplicities shows that exact conservation of charges across more than one unit of rapidity and/or a chemical freeze-out temperature which decreases with the charged pion multiplicity improves agreement with the data. Comment: 5 pages, 1 figure |
| Databáze: | OpenAIRE |
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