Artículo
Abstract:
We present a measurement of semi-inclusive spin asymmetries for positively and negatively charged hadrons from deep inelastic scattering of polarised muons on polarised protons and deuterons in the range 0.003 < x < 0.7 and Q2 > 1 GeV2. Compared to our previous publication on this subject, with the new data the statistical errors have been reduced by nearly a factor of two. From these asymmetries and our inclusive spin asymmetries we determine the polarised quark distributions of valence quarks and non-strange sea quarks at Q2 = 10 GeV2. The polarised u valence quark distribution, Δuυ(×), is positive and the polarisation increases with x. The polarised d valence quark distribution, Δdυ(x), is negative and the non-strange sea distribution, Δq-(x), is consistent with zero over the measured range of x. We find for the first moments (latin small letter esh)10Δuυ(x)d x = 0.77 ± 0.10 ± 0.08, (latin small letter esh)10Δdυ(x)d x = -0.52 ± 0.14 ± 0.09 and (latin small letter esh)10Δq-(x)d x = 0.01 ± 0.04 ± 0.03, where we assumed Δu-(x) = Δd-(x). We also determine for the first time the second moments of the valence distributions (latin small letter esh)10xΔqυ(x)d x. © 1998 Published by Elsevier Science B.V.
Registro:
| Documento: | Artículo |
| Título: | Polarised quark distributions in the nucleon from semi-inclusive spin asymmetries |
| Autor: | Adeva, B. et al. Este artículo contiene 140 autores, consultelos en el artículo en formato pdf. |
| Filiación: | Este artículo contiene 140 autores con sus filiaciones, consultelas en el artículo en formato pdf. |
| Año: | 1998 |
| Volumen: | 420 |
| Número: | 1-2 |
| Página de inicio: | 180 |
| Página de fin: | 190 |
| DOI: | http://dx.doi.org/10.1016/S0370-2693(97)01546-3 |
| Título revista: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Título revista abreviado: | Phys Lett Sect B Nucl Elem Part High-Energy Phys |
| ISSN: | 03702693 |
| CODEN: | PYLBA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v420_n1-2_p180_Adeva |
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Citas:
---------- APA ----------
(1998) . Polarised quark distributions in the nucleon from semi-inclusive spin asymmetries. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 420(1-2), 180-190.http://dx.doi.org/10.1016/S0370-2693(97)01546-3
---------- CHICAGO ----------
Adeva, B. "Polarised quark distributions in the nucleon from semi-inclusive spin asymmetries" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 420, no. 1-2 (1998) : 180-190.http://dx.doi.org/10.1016/S0370-2693(97)01546-3
---------- MLA ----------
Adeva, B. "Polarised quark distributions in the nucleon from semi-inclusive spin asymmetries" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 420, no. 1-2, 1998, pp. 180-190.http://dx.doi.org/10.1016/S0370-2693(97)01546-3
---------- VANCOUVER ----------
Adeva, B. Polarised quark distributions in the nucleon from semi-inclusive spin asymmetries. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 1998;420(1-2):180-190.http://dx.doi.org/10.1016/S0370-2693(97)01546-3
