Flavor asymmetry of polarized and unpolarized sea quark distributions in the large-N_c limit

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dc.creatorDressler, B.
dc.creatorGoeke, K.
dc.creatorPobylitsa, P. V.
dc.creatorPolyakov, M. V.
dc.creatorWatabe, T.
dc.creatorWeiss, C.
dc.date1998-09-22
dc.date.accessioned2026-07-07T04:05:08Z
dc.date.available2026-07-07T04:05:08Z
dc.descriptionWe summarize recent attempts to calculate the flavor asymmetry of the nucleon's sea quark distributions in the large-$N_c$ limit, where the nucleon can be described as a soliton of an effective chiral theory. We discuss the leading-twist longitudinally polarized and transversity antiquark distributions, $Δ\bar u (x) - Δ\bar d (x)$ and $δ\bar u (x) - δ\bar d (x)$, as well as the unpolarized one, $\bar u (x) - \bar d (x)$, which appears only in the next-to-leading order of the $1/N_c$-expansion. Results for $\bar u (x) - \bar d (x)$ are in good agreement with the recent Drell-Yan data from the FNAL E866 experiment. The longitudinally polarized antiquark asymmetry, $Δ\bar u (x) - Δ\bar d (x)$, is found to be larger than the unpolarized one.
dc.description12 pages, LaTeX, 3 figures included using epsf. Part of Plenary Talk given by C. Weiss at the XI International Conference ``Problems of Quantum Field Theory'' (In Memory of D.I. Blokhintsev), Dubna, July 13-17, 1998
dc.identifierhttps://arxiv.org/abs/hep-ph/9809487
dc.identifierhttp://arxiv.org/abs/hep-ph/9809487
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/48305
dc.subjectHigh Energy Physics - Phenomenology
dc.titleFlavor asymmetry of polarized and unpolarized sea quark distributions in the large-N_c limit
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