dorsal/arxiv
View SchemaProbing Nucleon Strangeness with Neutrinos: Nuclear Model Dependences
| Authors | M. B. Barbaro, A. De Pace, T. W. Donnelly, A. Molinari, M. J. Musolf |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9605020 |
| URL | https://arxiv.org/abs/nucl-th/9605020 |
| DOI | 10.1103/PhysRevC.54.1954 |
| Journal | Phys.Rev.C54:1954-1969,1996 |
Abstract
The extraction of the nucleon's strangeness axial charge, Delta_s, from inclusive, quasielastic neutral current neutrino cross sections is studied within the framework of the plane-wave impulse approximation. We find that the value of Delta_s can depend significantly on the choice of nuclear model used in analyzing the quasielastic cross section. This model-dependence may be reduced by one order of magnitude when Delta_s is extracted from the ratio of total proton to neutron yields. We apply this analysis to the interpretation of low-energy neutrino cross sections and arrive at a nuclear theory uncertainty of plus/minus 0.03 on the value of Delta_s expected to be determined from the ratio of proton and neutron yields measured by the LSND collaboration. This error compares favorably with estimates of the SU(3)-breaking uncertainty in the value of Delta_s extracted from inclusive, polarized deep-inelastic structure function measurements. We also point out several general features of the quasielastic neutral current neutrino cross section and compare them with the analogous features in inclusive, quasielastic electron scattering.
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"abstract": "The extraction of the nucleon\u0027s strangeness axial charge, Delta_s, from\ninclusive, quasielastic neutral current neutrino cross sections is studied\nwithin the framework of the plane-wave impulse approximation. We find that the\nvalue of Delta_s can depend significantly on the choice of nuclear model used\nin analyzing the quasielastic cross section. This model-dependence may be\nreduced by one order of magnitude when Delta_s is extracted from the ratio of\ntotal proton to neutron yields. We apply this analysis to the interpretation of\nlow-energy neutrino cross sections and arrive at a nuclear theory uncertainty\nof plus/minus 0.03 on the value of Delta_s expected to be determined from the\nratio of proton and neutron yields measured by the LSND collaboration. This\nerror compares favorably with estimates of the SU(3)-breaking uncertainty in\nthe value of Delta_s extracted from inclusive, polarized deep-inelastic\nstructure function measurements. We also point out several general features of\nthe quasielastic neutral current neutrino cross section and compare them with\nthe analogous features in inclusive, quasielastic electron scattering.",
"arxiv_id": "nucl-th/9605020",
"authors": [
"M. B. Barbaro",
"A. De Pace",
"T. W. Donnelly",
"A. Molinari",
"M. J. Musolf"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevC.54.1954",
"journal_ref": "Phys.Rev.C54:1954-1969,1996",
"title": "Probing Nucleon Strangeness with Neutrinos: Nuclear Model Dependences",
"url": "https://arxiv.org/abs/nucl-th/9605020"
},
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