Neutron Spin Structure In the Valence Quark Region
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Física
2004
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| _version_ | 1866815544747884544 |
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| author | Zein Eddine Meziani |
| author_facet | Zein Eddine Meziani |
| contents | Neutron Spin Structure In the Valence Quark Region Zein Eddine Meziani Física, Astronomía y Matemáticas I present in this talk the latest results of the neutron spin physics program at Jefferson Laboratory in Hall Ausing the highly polarized electron beam and a high pressure polarized 3He target. This program includesamong others experiment E99-117 in which the neutron spin asymmetry An1 was measured in the deep inelasticregion with high precision. This asymmetry is observed, for the first time, to change sign from negative topositive values between 0:3 < x < 0:6. Furthermore we perform a flavor decomposition of the spin-dependentto spin-independent quark distributions ratios in the nucleon and find that relativistic quark models are in betteragreement than pQCD fits using the hadron helicity conservation constraint as x ! 1. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434573 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3A Vol.34 |
| format | Artículo científico |
| id | redalyc_46434573 |
| language | en |
| publishDate | 2004 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Neutron Spin Structure In the Valence Quark Region Zein Eddine Meziani Física, Astronomía y Matemáticas Neutron Spin Structure In the Valence Quark Region Zein Eddine Meziani Física, Astronomía y Matemáticas I present in this talk the latest results of the neutron spin physics program at Jefferson Laboratory in Hall Ausing the highly polarized electron beam and a high pressure polarized 3He target. This program includesamong others experiment E99-117 in which the neutron spin asymmetry An1 was measured in the deep inelasticregion with high precision. This asymmetry is observed, for the first time, to change sign from negative topositive values between 0:3 < x < 0:6. Furthermore we perform a flavor decomposition of the spin-dependentto spin-independent quark distributions ratios in the nucleon and find that relativistic quark models are in betteragreement than pQCD fits using the hadron helicity conservation constraint as x ! 1. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434573 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.3A Vol.34 |
| title | Neutron Spin Structure In the Valence Quark Region |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46434573 |