dorsal/arxiv
View SchemaProton Polarization in the $p(\vec e,e'\vec p)\pi^0$ Reaction and the Measurement of Quadrupole Components in the N to $\Delta$ Transition
| Authors | H. Schmieden |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9712057 |
| URL | https://arxiv.org/abs/nucl-th/9712057 |
| DOI | 10.1007/s100500050077 |
| Journal | Eur.Phys.J.A1:427-433,1998 |
Abstract
The recoil proton polarization in the $\pi^0$ production off the proton with longitudinally polarized electron beam has been studied as a means to measure quadrupole components in the N to $\Delta$ transition. On top of the $\Delta$ resonance a high sensitivity to a possible Coulomb quadrupole excitation is found in parallel kinematics. The ratio of $S_{1+}/M_{1+}$ multipole amplitudes can be determined from the ratio of the two in-scattering-plane recoil proton polarization components. Avoiding the absolute measurement of the polarizations, such a ratio allows small experimental uncertainties. Furthermore, the electron helicity independent proton polarization component enables the characterization of resonant and non-resonant pieces.
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"abstract": "The recoil proton polarization in the $\\pi^0$ production off the proton with\nlongitudinally polarized electron beam has been studied as a means to measure\nquadrupole components in the N to $\\Delta$ transition. On top of the $\\Delta$\nresonance a high sensitivity to a possible Coulomb quadrupole excitation is\nfound in parallel kinematics. The ratio of $S_{1+}/M_{1+}$ multipole amplitudes\ncan be determined from the ratio of the two in-scattering-plane recoil proton\npolarization components. Avoiding the absolute measurement of the\npolarizations, such a ratio allows small experimental uncertainties.\nFurthermore, the electron helicity independent proton polarization component\nenables the characterization of resonant and non-resonant pieces.",
"arxiv_id": "nucl-th/9712057",
"authors": [
"H. Schmieden"
],
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"doi": "10.1007/s100500050077",
"journal_ref": "Eur.Phys.J.A1:427-433,1998",
"title": "Proton Polarization in the $p(\\vec e,e\u0027\\vec p)\\pi^0$ Reaction and the Measurement of Quadrupole Components in the N to $\\Delta$ Transition",
"url": "https://arxiv.org/abs/nucl-th/9712057"
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