dorsal/arxiv
View SchemaMeson and Isobar Degrees of Freedom in A($\vec{e},e'\vec{p}$) reactions at $0.2 \leq Q^2 \leq 0.8 (GeV/c)^2$
| Authors | Jan Ryckebusch, Dimitri Debruyne, Wim Van Nespen, Stijn Janssen |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9904011 |
| URL | https://arxiv.org/abs/nucl-th/9904011 |
| DOI | 10.1103/PhysRevC.60.034604 |
| Journal | Phys.Rev. C60 (1999) 034604 |
Abstract
The effect of meson and isobar degrees of freedom in A($\vec{e},e'\vec{p}$) and A(e,e'n) is studied for four-momentum transfers Q^2 in the range between 0.2 and 0.8 (GeV/c)^2. The calculations are performed in a non-relativistic framework with explicit (N,\Delta,\pi) degrees-of-freedom. For the whole range of momentum transfers under investigation the relative effect of the meson-exchange and isobar degrees of freedom is significant. At low missing momenta and quasi-elastic conditions, a tendency to reduce the (e,e'p) and (e,e'n) differential cross sections is noticed. The greatest sensitivity is found in the interference structure functions $W_{LT}$ and $W_{TT}$. The recoil polarization observables, on the other hand, are moderately affected by the meson-exchange and $\Delta$-isobar currents.
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"abstract": "The effect of meson and isobar degrees of freedom in A($\\vec{e},e\u0027\\vec{p}$)\nand A(e,e\u0027n) is studied for four-momentum transfers Q^2 in the range between\n0.2 and 0.8 (GeV/c)^2. The calculations are performed in a non-relativistic\nframework with explicit (N,\\Delta,\\pi) degrees-of-freedom. For the whole range\nof momentum transfers under investigation the relative effect of the\nmeson-exchange and isobar degrees of freedom is significant. At low missing\nmomenta and quasi-elastic conditions, a tendency to reduce the (e,e\u0027p) and\n(e,e\u0027n) differential cross sections is noticed. The greatest sensitivity is\nfound in the interference structure functions $W_{LT}$ and $W_{TT}$. The recoil\npolarization observables, on the other hand, are moderately affected by the\nmeson-exchange and $\\Delta$-isobar currents.",
"arxiv_id": "nucl-th/9904011",
"authors": [
"Jan Ryckebusch",
"Dimitri Debruyne",
"Wim Van Nespen",
"Stijn Janssen"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.60.034604",
"journal_ref": "Phys.Rev. C60 (1999) 034604",
"title": "Meson and Isobar Degrees of Freedom in A($\\vec{e},e\u0027\\vec{p}$) reactions at $0.2 \\leq Q^2 \\leq 0.8 (GeV/c)^2$",
"url": "https://arxiv.org/abs/nucl-th/9904011"
},
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