Gottfried sum rule and the ratio {ital F}{sub 2}{sup {ital n}}/{ital F}{sub 2}{sup {ital p}}

Journal Article · Sat Jul 01 04:00:00 EDT 1995 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.52.68· OSTI ID:69077

Arash, F ^[1]

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1. Center for Theoretical Physics and Mathematics, AEOI, P.O. Box 11365-8486, Tehran (Iran, Islamic Republic of)

We describe the nucleon as a bound state of three constituent objects, called ``valons,`` which themselves have structure. At high enough {ital Q}{sup 2} it is the valon structure, governed by QCD, which is probed and, thus, the nucleon structure is described in terms of its partonic distributions, while at low {ital Q}{sup 2} the nucleon is described in terms of its valon distributions, independent of a probe and controlled by nonperturbative QCD. The implications of this phenomenological model, then, are applied to the New Muon Collaboration (NMC) data for {ital F}{sub 2}{sup {ital n}}/{ital F}{sub 2}{sup {ital p}} and on the Gottfried sum rule. It is shown that the model successfully reproduces the experimental value of the Gottfried sum rule {ital S}{sub {ital G}}[0{le}{ital x}1,{l_angle}{ital Q}{sup 2}{r_angle}=4 GeV{sup 2}]=0.243, consistent with the experimental results as well as the ratio {ital F}{sub 2}{sup {ital n}}/{ital F}{sub 2}{sup {ital p}} down to the lowest {ital x} value.

• OSTI ID: 69077
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 52; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BOUND STATE
DEEP INELASTIC SCATTERING
DEUTERIUM TARGET
DISTRIBUTION
HYDROGEN 1 TARGET
MOMENTUM TRANSFER
MUON REACTIONS
NUCLEONS
PARTONS
PERTURBATION THEORY
QUANTUM CHROMODYNAMICS
STRUCTURE FUNCTIONS
SUM RULES