Hadron loops in the quark model

Journal Article · Wed Aug 04 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3480175· OSTI ID:21410804

Bijker, Roelof ^[1]; Santopinto, Elena ^[2]

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1. ICN-UNAM, AP 70-543, 04510 Mexico DF (Mexico)
2. INFN, via Dodecaneso 33, 16164 Genova (Italy)

We present an unquenched quark model for baryons in which the effects of quark-antiquark pair creation (uu(bar sign), dd(bar sign) and ss(bar sign)) are taken into account in an explicit form via a microscopic, QCD-inspired, quark-antiquark creation mechanism. It is shown that, while the inclusion of the qq(bar sign) pairs does not affect the baryon magnetic moments, it leads to a sizeable contribution of the orbital angular momentum to the spin of the proton.

• OSTI ID: 21410804
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1265; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BARYONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MAGNETIC MOMENTS
MASS
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
NUCLEONS
ORBITAL ANGULAR MOMENTUM
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PROTONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARK-ANTIQUARK INTERACTIONS
QUARKS
SPIN