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Abstract:

We present a new measurement of the virtual photon proton asymmetry Ap1 from deep inelastic scattering of polarized muons on polarized protons in the kinematic range 0.0008 < x < 0.7 and 0.2 < Q2 < 100 GeV2. With this, the statistical uncertainty of our measurement has improved by a factor of 2 compared to our previous measurements. The spin-dependent structure function gp1 is determined for the data with Q2 > 1 GeV2. A perturbative QCD evolution in next-to-leading order is used to determine gp1(x) at a constant Q2. At Q2 = 10 GeV2 we find, in the measured range, ∫0.70.003 gp1(x)d x = 0.139 ± 0.006(stat) ± 0.008(syst) ± 0.006 (evol). The value of the first moment Γp1 = ∫10gp1(x)dx of gp1 depends on the approach used to describe the behaviour of gp1 at low x. We find that the Ellis-Jaffe sum rule is violated. With our published result for Γd1 we confirm the Bjorken sum rule with an accuracy of ≈ 15% at the one standard deviation level. © 1997 Elsevier Science B.V.

Registro:

Documento: Artículo
Título:The spin-dependent structure function g1(x) of the proton from polarized deep-inelastic muon scattering
Autor:Adeva, B. et al.
Este artículo contiene 130 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 130 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:1997
Volumen:412
Número:3-4
Página de inicio:414
Página de fin:424
DOI: http://dx.doi.org/10.1016/S0370-2693(97)01106-4
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_v412_n3-4_p414_Adeva

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Citas:

---------- APA ----------
(1997) . The spin-dependent structure function g1(x) of the proton from polarized deep-inelastic muon scattering. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 412(3-4), 414-424.
http://dx.doi.org/10.1016/S0370-2693(97)01106-4
---------- CHICAGO ----------
Adeva, B. "The spin-dependent structure function g1(x) of the proton from polarized deep-inelastic muon scattering" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 412, no. 3-4 (1997) : 414-424.
http://dx.doi.org/10.1016/S0370-2693(97)01106-4
---------- MLA ----------
Adeva, B. "The spin-dependent structure function g1(x) of the proton from polarized deep-inelastic muon scattering" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 412, no. 3-4, 1997, pp. 414-424.
http://dx.doi.org/10.1016/S0370-2693(97)01106-4
---------- VANCOUVER ----------
Adeva, B. The spin-dependent structure function g1(x) of the proton from polarized deep-inelastic muon scattering. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 1997;412(3-4):414-424.
http://dx.doi.org/10.1016/S0370-2693(97)01106-4