dorsal/arxiv
View SchemaThermodynamics of Delta resonances
| Authors | W. Weinhold, B. Friman, W. Nörenberg |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9710014 |
| URL | https://arxiv.org/abs/nucl-th/9710014 |
| DOI | 10.1016/S0370-2693(98)00639-X |
| Journal | Phys.Lett. B433 (1998) 236-242 |
Abstract
The thermodynamic potential of a system of pions and nucleons is computed including the piN interactions in the P33 channel. A consistent treatment of the width of the resonance in this channel, the Delta(1232) resonance, is explored in detail. In the low-density limit we recover the leading term of the virial expansion for the thermodynamic potential. An instructive diagrammatic interpretation of the contributions to the total baryon number is presented. Furthermore, we examine within a fireball model the consequences for the pion spectra in heavy-ion collisions at intermediate energies, including the effect of collective flow. A consistent treatment of the Delta width leads to a substantial enhancement of the pion yield at low momenta.
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"abstract": "The thermodynamic potential of a system of pions and nucleons is computed\nincluding the piN interactions in the P33 channel. A consistent treatment of\nthe width of the resonance in this channel, the Delta(1232) resonance, is\nexplored in detail. In the low-density limit we recover the leading term of the\nvirial expansion for the thermodynamic potential. An instructive diagrammatic\ninterpretation of the contributions to the total baryon number is presented.\nFurthermore, we examine within a fireball model the consequences for the pion\nspectra in heavy-ion collisions at intermediate energies, including the effect\nof collective flow. A consistent treatment of the Delta width leads to a\nsubstantial enhancement of the pion yield at low momenta.",
"arxiv_id": "nucl-th/9710014",
"authors": [
"W. Weinhold",
"B. Friman",
"W. N\u00f6renberg"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1016/S0370-2693(98)00639-X",
"journal_ref": "Phys.Lett. B433 (1998) 236-242",
"title": "Thermodynamics of Delta resonances",
"url": "https://arxiv.org/abs/nucl-th/9710014"
},
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