Spontaneous violation of chiral symmetry in QCD vacuum is the origin of baryon masses and determines baryon magnetic moments and their other static properties

Journal Article · Wed Jul 15 00:00:00 EDT 2009 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778809070151· OSTI ID:21405867

Ioffe, B L ^[1]

---

1. Institute of Theoretical and Experimental Physics (Russian Federation)

A short review is presented of the spontaneous violation of chiral symmetry in QCD vacuum. It is demonstrated that this phenomenon is the origin of baryon masses in QCD. The value of nucleon mass is calculated, as well as the masses of hyperons and some baryonic resonances, and expressed mainly through the values of quark condensates - <0|q-barq|0>, q = u, d, s,-the vacuum expectation values (v.e.v.) of quark field. The concept of v.e.v. induced by external fields is introduced. It is demonstrated that such v.e.v. induced by static electromagnetic field results in quark condensate magnetic susceptibility, which plays the main role in determination of baryon magnetic moments. The magnetic moments of proton, neutron, and hyperons are calculated. The results of calculation of baryon octet {beta}-decay constants are also presented.

• OSTI ID: 21405867
• Journal Information: Physics of Atomic Nuclei, Vol. 72, Issue 7; Other Information: DOI: 10.1134/S1063778809070151; Copyright (c) 2009 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON OCTETS
BARYONS
BETA DECAY
CHIRAL SYMMETRY
COLOR MODEL
ELECTROMAGNETIC FIELDS
EXPECTATION VALUE
HYPERONS
MAGNETIC MOMENTS
MAGNETIC SUSCEPTIBILITY
MASS
NEUTRONS
PROTONS
QUANTUM CHROMODYNAMICS
QUARK CONDENSATION
QUARKS
SYMMETRY BREAKING
COMPOSITE MODELS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
MAGNETIC PROPERTIES
MATHEMATICAL MODELS
MULTIPLETS
NUCLEAR DECAY
NUCLEONS
PARTICLE MODELS
PARTICLE MULTIPLETS
PHYSICAL PROPERTIES
QUANTUM FIELD THEORY
QUARK MODEL
STRANGE PARTICLES
SYMMETRY