dorsal/arxiv
View SchemaGauge symmetric delta(1232) couplings and the radiative muon capture in hydrogen
| Authors | J. Smejkal, E. Truhlik |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0409011 |
| URL | https://arxiv.org/abs/nucl-th/0409011 |
| DOI | 10.1103/PhysRevC.72.015501 |
| Journal | Phys.Rev. C72 (2005) 015501 |
Abstract
Using the difference between the gauge symmetric and standard pi-N-delta couplings, a contact pi-pi-N-N term, quadratic in the pi-N-delta coupling, is explicitly constructed. Besides, a contribution from the delta excitation mechanism to the photon spectrum for the radiative muon capture in hydrogen is derived from the gauge symmetric pi-N-delta and gamma-N-delta couplings. It is shown for the photon spectrum, studied recently experimentally, that the new spectrum is for the photon momentums k > 60 MeV by 4-10 % smaller than the one obtained from standardly used couplings with the on-shell deltas.
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"abstract": "Using the difference between the gauge symmetric and standard pi-N-delta\ncouplings, a contact pi-pi-N-N term, quadratic in the pi-N-delta coupling, is\nexplicitly constructed. Besides, a contribution from the delta excitation\nmechanism to the photon spectrum for the radiative muon capture in hydrogen is\nderived from the gauge symmetric pi-N-delta and gamma-N-delta couplings. It is\nshown for the photon spectrum, studied recently experimentally, that the new\nspectrum is for the photon momentums k \u003e 60 MeV by 4-10 % smaller than the one\nobtained from standardly used couplings with the on-shell deltas.",
"arxiv_id": "nucl-th/0409011",
"authors": [
"J. Smejkal",
"E. Truhlik"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.72.015501",
"journal_ref": "Phys.Rev. C72 (2005) 015501",
"title": "Gauge symmetric delta(1232) couplings and the radiative muon capture in hydrogen",
"url": "https://arxiv.org/abs/nucl-th/0409011"
},
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