Unitary symmetry in baryon-baryon scattering, II

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Annals of Physics (New York); (United States)

DOI:https://doi.org/10.1016/0003-4916(92)90338-M· OSTI ID:7197481

Dover, C B ^[1]; Feshbach, H ^[2]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Massachusetts Inst. of Tech., Cambridge (United States)

The authors examine the pattern of SU(3) symmetry breaking in baryon-baryon scattering processes. In the case of the longer range pseudoscalar meson exchanges, they find that the SU(3) breaking is primarily confined to diagonal transitions {Lambda}N{r arrow}{Lambda}N and {Sigma}N{r arrow}{Sigma}N. Charge exchange processes, namely {Sigma}{sup {minus}}p{r arrow}{Sigma}{sup 0}n, {Lambda}n, suffer only minimal SU(3) violations, after correction for kinematical factors. For short range interactions mediated by single gluon/quark exchange, they find a similar conclusion; i.e., symmetry breaking is principally confined to diagonal transitions. In this case, SU(3) symmetry breaking is introduced by taking the mass of the s quark to be different from that of u and d quarks. They extend their previous SU(3) analysis to the strangeness {minus}2 sector.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7197481
• Journal Information: Annals of Physics (New York); (United States), Journal Name: Annals of Physics (New York); (United States) Vol. 217:1; ISSN 0003-4916; ISSN APNYA
• Country of Publication: United States
• Language: English

Related Subjects

662120 -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662340* -- Hadron Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSON-EXCHANGE MODELS
CASIMIR OPERATORS
CHARGE-EXCHANGE INTERACTIONS
DISTANCE
ELEMENTARY PARTICLES
FERMIONS
HADRON-HADRON INTERACTIONS
INTERACTION RANGE
INTERACTIONS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
PARTICLE INTERACTIONS
PARTICLE KINEMATICS
PARTICLE MODELS
PERIPHERAL MODELS
POSTULATED PARTICLES
QUARKS
SCATTERING
STRONG INTERACTIONS
SYMMETRY
SYMMETRY BREAKING
UNITARY SYMMETRY