000 02588nlm1a2200397 4500
001 656759
005 20231030041443.0
035 _a(RuTPU)RU\TPU\network\23239
035 _aRU\TPU\network\23238
090 _a656759
100 _a20171211a2012 k y0engy50 ba
101 0 _aeng
102 _aUS
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aNucleon structure including high Fock states in AdS/QCD
_fT. Gutsche [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 82 tit.]
330 _aWe 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.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tPhysical Review D
_oparticles, fields, gravitation, and cosmology
_d1970-
463 _tVol. 86, iss.3
_v[036007]
_d2012
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aнуклоны
610 1 _aпартоны
610 1 _aгравитация
701 1 _aGutsche
_bT.
701 1 _aLyubovitskiy (Lyubovitskij)
_bV. E.
_cphysicist
_cProfessor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences, Professor of the University of Tubingen (Germany)
_f1963-
_gValery Efimovich
_2stltpush
_3(RuTPU)RU\TPU\pers\33385
701 1 _aSchmidt
_bI.
701 1 _aVega
_bA.
801 2 _aRU
_b63413507
_c20171211
_gRCR
856 4 _uhttps://doi.org/10.1103/PhysRevD.86.036007
942 _cCF