dorsal/arxiv
View SchemaVNI-4.1: Simulation of space-time evolution of e^+e^- .... A+B collisions with parton-cascades, parton-hadron conversion, final-state hadron cascades
| Authors | Klaus Geiger, Ron Longacre, Dinesh K. Srivastava |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9806102 |
| URL | https://arxiv.org/abs/nucl-th/9806102 |
| Journal | Comput.Phys.Commun. 104 (1997) 70 |
Abstract
VNI is a general-purpose Monte-Carlo event-generator, which includes the simulation of lepton-lepton, lepton-hadron, lepton-nucleus, hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions. It uses the real-time evolution of parton cascades in conjunction with a self-consistent hadronization scheme, as well as the development of hadron cascades after hadronization. The causal evolution from a specific initial state (determined by the colliding beam particles) is followed by the time-development of the phase-space densities of partons, pre-hadronic parton clusters, and final-state hadrons, in position-space, momentum-space and color-space. The parton-evolution is described in terms of a space-time generalization of the familiar momentum-space description of multiple (semi)hard interactions in QCD, involving 2 -> 2 parton collisions, 2 -> 1 parton fusion processes, and 1 -> 2 radiation processes. The formation of color-singlet pre-hadronic clusters and their decays into hadrons, on the other hand, is treated by using a spatial criterion motivated by confinement and a non-perturbative model for hadronization. Finally, the cascading of produced pre-hadronic clusters and of hadrons is includes a multitude of 2 -> n processes, and is modeled in paralell to the parton cascade description. This paper gives a brief review of the physics underlying VNI, as well as a detailed description of the program itself. The latter program description emphasizes easy-to-use pragmatism and explains how to use the program (including simple examples), annotates input and control parameters, and discusses output data provided by it.
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"abstract": "VNI is a general-purpose Monte-Carlo event-generator, which includes the\nsimulation of lepton-lepton, lepton-hadron, lepton-nucleus, hadron-hadron,\nhadron-nucleus, and nucleus-nucleus collisions. It uses the real-time evolution\nof parton cascades in conjunction with a self-consistent hadronization scheme,\nas well as the development of hadron cascades after hadronization. The causal\nevolution from a specific initial state (determined by the colliding beam\nparticles) is followed by the time-development of the phase-space densities of\npartons, pre-hadronic parton clusters, and final-state hadrons, in\nposition-space, momentum-space and color-space. The parton-evolution is\ndescribed in terms of a space-time generalization of the familiar\nmomentum-space description of multiple (semi)hard interactions in QCD,\ninvolving 2 -\u003e 2 parton collisions, 2 -\u003e 1 parton fusion processes, and 1 -\u003e 2\nradiation processes. The formation of color-singlet pre-hadronic clusters and\ntheir decays into hadrons, on the other hand, is treated by using a spatial\ncriterion motivated by confinement and a non-perturbative model for\nhadronization. Finally, the cascading of produced pre-hadronic clusters and of\nhadrons is includes a multitude of 2 -\u003e n processes, and is modeled in paralell\nto the parton cascade description. This paper gives a brief review of the\nphysics underlying VNI, as well as a detailed description of the program\nitself. The latter program description emphasizes easy-to-use pragmatism and\nexplains how to use the program (including simple examples), annotates input\nand control parameters, and discusses output data provided by it.",
"arxiv_id": "nucl-th/9806102",
"authors": [
"Klaus Geiger",
"Ron Longacre",
"Dinesh K. Srivastava"
],
"categories": [
"nucl-th",
"hep-ph"
],
"journal_ref": "Comput.Phys.Commun. 104 (1997) 70",
"title": "VNI-4.1: Simulation of space-time evolution of e^+e^- .... A+B collisions with parton-cascades, parton-hadron conversion, final-state hadron cascades",
"url": "https://arxiv.org/abs/nucl-th/9806102"
},
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