Nucleon structure including high Fock states in AdS/QCD; Physical Review D; Vol. 86, iss.3

Nucleon structure including high Fock states in AdS/QCD; Physical Review D; Vol. 86, iss.3

Bibliographic Details
Parent link:Physical Review D: particles, fields, gravitation, and cosmology.— , 1970-
Vol. 86, iss.3.— 2012.— [036007]
Other Authors: Gutsche T., Lyubovitskiy (Lyubovitskij) V. E. Valery Efimovich, Schmidt I., Vega A.
Summary:Title screen
We present a detailed analysis of nucleon electromagnetic and axial form factors in a holographic soft-wall model. This approach is based on an action which describes hadrons with broken conformal invariance and incorporates confinement through the presence of a background dilaton field. For Nc=3 we describe the nucleon structure in a superposition of a three-valence quark state with high Fock states including an adjustable number of partons (quarks, antiquarks and gluons) via studying the dynamics of 5D fermion fields of different scaling dimension in anti-de Sitter space. According to the gauge/gravity duality the 5D fermion fields of different scaling dimension correspond to the Fock state components with a specific number of partons. In the present application we restrict to the contribution of 3, 4 and 5 parton components in the nucleon Fock state. With a minimal number of free parameters (dilaton scale parameter, mixing parameters of partial contributions of Fock states, coupling constants in the effective Lagrangian) we achieve a reasonable agreement with data for the nucleon form factors.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2012
Subjects:
электронный ресурс
труды учёных ТПУ
нуклоны
партоны
гравитация
Online Access:https://doi.org/10.1103/PhysRevD.86.036007
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656759

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