What can we learn from the recent measurements of the spin-dependent structure function [ital g][sub 1]([ital x])
- Physics Department, Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213-3890 (United States)
In this paper, we argue that the effects of the Drell-Hearn-Gerasimov (DHG) sum rule should be included to extract the sum rule of polarized neutrons from the recent Spin Muon Collaboration measurement of the spin-dependent structure function [ital g][sub 1]([ital x]) of the deuteron, since the measurement was obtained at fairly low [ital Q][sup 2]. The value [Gamma][equivalent to][integral][sub 0][sup 1][ital g][sub 1]([ital x])[ital dx] could be modified significantly at [ital Q][sup 2] around 2--4 GeV[sup 2] by the high twist effects connected with the DHG sum rule. More accurate data for the spin-dependent structure function in the resonance region are needed to obtain reliable information on [Gamma] for the polarized protons and neutrons.
- OSTI ID:
- 6132939
- Journal Information:
- Physical Review, D (Particles Fields); (United States), Vol. 48:9; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NEUTRONS
POLARIZATION
STRUCTURE FUNCTIONS
SUM RULES
SPIN
DEUTERONS
EMC EFFECT
PROTONS
RESONANCE
ANGULAR MOMENTUM
BARYONS
CHARGED PARTICLES
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FUNCTIONS
HADRONS
NUCLEONS
PARTICLE PROPERTIES
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