Publication
Statistical hadronization model analysis of hadron yields in p + Nb and Ar + KCl at SIS18 energies
| dc.contributor.author | HADES collaboration (110 authors) | |
| dc.contributor.author | Blanco, A. | |
| dc.contributor.author | Fonte, P. | |
| dc.contributor.author | Lopes, L. | |
| dc.contributor.author | Mangiarotti, A. | |
| dc.date.accessioned | 2019-02-04T08:56:49Z | |
| dc.date.available | 2019-02-04T08:56:49Z | |
| dc.date.issued | 2016-06-28 | |
| dc.date.updated | 2019-02-04T08:56:49Z | |
| dc.description.abstract | The HADES data from p+Nb collisions at center of mass energy of $\sqrt{s_{NN}}$= 3.2 GeV are analyzed by employing a statistical model. Accounting for the identified hadrons $\pi^0$, $\eta$, $\Lambda$, $K^{0}_{s}$, $\omega$ allows a surprisingly good description of their abundances with parameters $T_{chem}=(99\pm11)$ MeV and $\mu_{b}=(619\pm34)$ MeV, which fits well in the chemical freeze-out systematics found in heavy-ion collisions. In supplement we reanalyze our previous HADES data from Ar+KCl collisions at $\sqrt{s_{NN}}$= 2.6 GeV with an updated version of the statistical model. We address equilibration in heavy-ion collisions by testing two aspects: the description of yields and the regularity of freeze-out parameters from a statistical model fit. Special emphasis is put on feed-down contributions from higher-lying resonance states which have been proposed to explain the experimentally observed $\Xi^-$ excess present in both data samples. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Eur.Phys.J. A52 (2016) 178; DOI 10.1140/epja/i2016-16178-x | |
| dc.identifier.uri | http://dx.doi.org/10.1140/epja/i2016-16178-x | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/27001 | |
| dc.language.iso | eng | |
| dc.title | Statistical hadronization model analysis of hadron yields in p + Nb and Ar + KCl at SIS18 energies | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article |