Chiral symmetry and the charge asymmetry of the s s distribution in the proton

Journal Article · Sat Feb 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.958· OSTI ID:7048868

Burkardt, M; Warr, B J ^[1]

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1. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)

Recently it has been suggested that a sizeable fraction of the strange and charm quarks in a nucleon--the so-called intrinsic strangeness or charm''--have momentum distributions which extend to large {ital x}{sub {ital b}{ital j}}. This effect is enhanced if these virtual heavy quarks live long enough so that many interactions with the rest of the nucleon can occur. It is shown that the same mechanism responsible for the intrinsic component also leads to a sizeable charge asymmetry of the corresponding spin and momentum distributions.

• DOE Contract Number: AC03-76SF00515
• OSTI ID: 7048868
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 45:3; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120* -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662230 -- Quantum Chromodynamics-- (1992-)
662410 -- Properties of Baryons & Baryon Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
ASYMMETRY
BARYONS
BOSONS
CHARGE DISTRIBUTION
CHARM PARTICLES
CHIRAL SYMMETRY
COMPOSITE MODELS
DISTRIBUTION FUNCTIONS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FUNCTIONS
HADRONS
LIGHT CONE
MAGNETIC MOMENTS
MATHEMATICAL MODELS
MESONS
MOMENTUM TRANSFER
NUCLEONS
PARTICLE MODELS
PARTICLE PROPERTIES
PROTONS
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
SPACE-TIME
SPIN
STRANGENESS
SYMMETRY
WAVE FUNCTIONS