dorsal/arxiv
View SchemaOff-shell effects in heavy particle production
| Authors | G. F. Bertsch, P. Danielewicz |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9510003 |
| URL | https://arxiv.org/abs/nucl-th/9510003 |
| DOI | 10.1016/0370-2693(95)01402-0 |
| Journal | Phys.Lett. B367 (1996) 55-59 |
Abstract
Off-shell propagation of nucleons is neglected in one-body transport models of heavy-ion collisions, but it could be significant in processes that are limited by phase space, such as the threshold production of heavy particles. We estimate the relative magnitude of off-shell production to on-shell production of the N$^*$(1535) resonance in heavy ion collisions. In the region where the on-shell production is dominated by a~two-step mechanism with an intermediate $\Delta$, we find that the contribution of off-shell scattering between projectile and target nucleons is indeed small. Beyond the latter contribution, however, correlations in the initial wave function produce off-shell contributions which can exceed those of the on-shell $\Delta$ mechanism.
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"abstract": "Off-shell propagation of nucleons is neglected in one-body transport models\nof heavy-ion collisions, but it could be significant in processes that are\nlimited by phase space, such as the threshold production of heavy particles. We\nestimate the relative magnitude of off-shell production to on-shell production\nof the N$^*$(1535) resonance in heavy ion collisions. In the region where the\non-shell production is dominated by a~two-step mechanism with an intermediate\n$\\Delta$, we find that the contribution of off-shell scattering between\nprojectile and target nucleons is indeed small. Beyond the latter contribution,\nhowever, correlations in the initial wave function produce off-shell\ncontributions which can exceed those of the on-shell $\\Delta$ mechanism.",
"arxiv_id": "nucl-th/9510003",
"authors": [
"G. F. Bertsch",
"P. Danielewicz"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/0370-2693(95)01402-0",
"journal_ref": "Phys.Lett. B367 (1996) 55-59",
"title": "Off-shell effects in heavy particle production",
"url": "https://arxiv.org/abs/nucl-th/9510003"
},
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