Polarized deep inelastic scattering off the neutron from gauge/string duality

Journal Article · Sat May 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.096006· OSTI ID:21409990

Jianhua, Gao; Zonggang, Mou ^[1]

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1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)

We investigate deep inelastic scattering off the polarized 'neutron' using gauge/string duality. The 'neutron' corresponds to a supergravity mode of the neutral dilatino. Through introducing the Pauli interaction term into the action in AdS{sub 5} space, we calculate the polarized deep inelastic structure functions of the 'neutron' in supergravity approximation at large t' Hooft coupling {lambda} and finite x with {lambda}{sup -1/2}<<x<1. In comparison with the charged dilatino-''proton,'' which has been obtained in the previous work by Gao and Xiao, we find the structure functions of the 'neutron' are power suppressed at the same order as the ones of the ''proton.'' Especially, we find the Burkhardt-Cottingham-like sum rule, which is satisfied in the work by Gao and Xiao, is broken due to the Pauli interaction term. We also illustrate how such a Pauli interaction term can arise naturally from higher dimensional fermion-graviton coupling through the usual Kaluza-Klein reduction.

• OSTI ID: 21409990
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 9; Other Information: DOI: 10.1103/PhysRevD.81.096006; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTI DE SITTER SPACE
APPROXIMATIONS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
COUPLING
DEEP INELASTIC SCATTERING
DUALITY
KALUZA-KLEIN THEORY
NEUTRONS
POLARIZATION
PROTONS
STRING MODELS
STRUCTURE FUNCTIONS
SUM RULES
SUPERGRAVITY
BARYONS
CALCULATION METHODS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EQUATIONS
EVALUATION
EXTENDED PARTICLE MODEL
FERMIONS
FIELD THEORIES
FUNCTIONS
HADRONS
INELASTIC SCATTERING
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
QUARK MODEL
SCATTERING
SIMULATION
SPACE
UNIFIED-FIELD THEORIES