dorsal/arxiv
View SchemaElectroweak Processes in Few-Nucleon Systems
| Authors | H. Arenhoevel |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9802062 |
| URL | https://arxiv.org/abs/nucl-th/9802062 |
| DOI | 10.1007/s006010050105 |
| Journal | Few Body Syst. 26 (1999) 43-98 |
Abstract
After a brief introduction into the basic ingredients of electroweak theory as a spontaneously broken local, non-Abelian gauge symmetry, the general properties of the electromagnetic current and two-photon operators are discussed. The specific forms of vector and axial one-nucleon currents are given, together with lowest order $\pi$ meson exchange and isobar currents as well as meson production currents. A brief overview is given on the most important one- and two-boson processes. Electron scattering in the one-boson- approximation is then considered in greater detail. Formal expressions of the cross section for inclusive and exclusive processes are given, including parity violating contributions from $\gamma$-$Z$ interference as well as from parity violating components in the hadronic wave function. Specific electromagnetic reactions on the deuteron are then discussed with respect to the influence of meson exchange currents, isobar configurations in the deuteron groundstate, relativistic contributions and the role of $\pi$-meson retardation. Furthermore, recent results on coherent and incoherent $\pi$- and $\eta$-photoproduction are presented as well as a discussion of the Gerasimov-Drell-Hearn sum rule and the effect of a parity violating deuteron component on inclusive electron scattering off the deuteron for quasifree kinematics. The review closes with a summary and a brief outlook.
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"abstract": "After a brief introduction into the basic ingredients of electroweak theory\nas a spontaneously broken local, non-Abelian gauge symmetry, the general\nproperties of the electromagnetic current and two-photon operators are\ndiscussed. The specific forms of vector and axial one-nucleon currents are\ngiven, together with lowest order $\\pi$ meson exchange and isobar currents as\nwell as meson production currents. A brief overview is given on the most\nimportant one- and two-boson processes. Electron scattering in the one-boson-\napproximation is then considered in greater detail. Formal expressions of the\ncross section for inclusive and exclusive processes are given, including parity\nviolating contributions from $\\gamma$-$Z$ interference as well as from parity\nviolating components in the hadronic wave function. Specific electromagnetic\nreactions on the deuteron are then discussed with respect to the influence of\nmeson exchange currents, isobar configurations in the deuteron groundstate,\nrelativistic contributions and the role of $\\pi$-meson retardation.\nFurthermore, recent results on coherent and incoherent $\\pi$- and\n$\\eta$-photoproduction are presented as well as a discussion of the\nGerasimov-Drell-Hearn sum rule and the effect of a parity violating deuteron\ncomponent on inclusive electron scattering off the deuteron for quasifree\nkinematics. The review closes with a summary and a brief outlook.",
"arxiv_id": "nucl-th/9802062",
"authors": [
"H. Arenhoevel"
],
"categories": [
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"doi": "10.1007/s006010050105",
"journal_ref": "Few Body Syst. 26 (1999) 43-98",
"title": "Electroweak Processes in Few-Nucleon Systems",
"url": "https://arxiv.org/abs/nucl-th/9802062"
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