Nucleon structure including high Fock states in AdS/QCD

Nucleon structure including high Fock states in AdS/QCD

מידע ביבליוגרפי
Parent link:Physical Review D: particles, fields, gravitation, and cosmology.— , 1970-
Vol. 86, iss.3.— 2012.— [036007]
מחברים אחרים: Gutsche T., Lyubovitskiy (Lyubovitskij) V. E. Valery Efimovich, Schmidt I., Vega A.
סיכום: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
שפה:אנגלית
יצא לאור: 2012
נושאים:
электронный ресурс
труды учёных ТПУ
нуклоны
партоны
гравитация
גישה מקוונת:https://doi.org/10.1103/PhysRevD.86.036007
פורמט: אלקטרוני Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656759

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