On a Possibility to Determine the Sign of the Polarized Gluon Distribution

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dc.creatorNowak, W. -D.
dc.creatorSidorov, A. V.
dc.creatorTokarev, M. V.
dc.date1996-08-28
dc.date.accessioned2026-07-07T03:59:52Z
dc.date.available2026-07-07T03:59:52Z
dc.descriptionWe investigate the possibility to draw conclusions on the sign of the spin-dependent gluon distribution, $ΔG(x, Q^2)$, from existing polarized DIS data. The spin-dependent parton distributions $Δu_v, Δd_v, Δ{\bar u}, Δ{\bar d}, Δ{s}$, and $ΔG$ are constructed in the framework of a phenomenological procedure taking into account some assumptions on signs of valence and sea parton distributions motivated by 't Hooft's mechanism of quark-quark interaction induced by instantons. The axial gluon anomaly and data on integral quark contributions to the proton spin, $Δ\tilde u, Δ\tilde d$, and $Δ\tilde s$, are also taken into account. Predictions for the $x$- and $Q^2$-dependencies of the polarized proton and neutron structure functions, $g_1^p$ and $g_1^n$, are compared to experimental data. It is shown that the neutron structure function, $g_1^n$, is especially sensitive to the sign of $ΔG(x, Q^2)$. The results of our analysis supports the conclusion that this sign should be positive.
dc.description14 pages, latex, 12 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/9608463
dc.identifierhttp://arxiv.org/abs/hep-ph/9608463
dc.identifierNuovo Cim. A110 (1997) 757-766
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/46406
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOn a Possibility to Determine the Sign of the Polarized Gluon Distribution
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