K-MESON CONTRIBUTION TO FORCES BETWEEN BARYONS

Journal Article · Sat Mar 15 04:00:00 EST 1958 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.109.2163· OSTI ID:4349407

Lichtenberg, D B; Ross, M

A fourth-order perturbation theory calculation is made of baryon-baryon forces arising from the exchange of K mesons. Results are compared with experiment. If it is assumed that the K meson is coupled equally to all baryons, while the pion is coupled weakly to hyperons, it is found (for either scalar or pseudoscalar K) that the DELTA -nucleon potential does not have the right spin dependence to give agreement with binding energies in hyperfragments. If, on the other hand, it is assumed that the pion is coupled with the same strength to all baryons, then one can obtain agreement with experiment if the baryon-baryon potentials arising from K exchange are small. This is not inconsistent with fairly large K coupling constants. These conclusions, however, become tenuous if K-baryon couplings are as strong as the pi -nucleon coupling (for example, if the PS coupling constants are comparable). (auth)

• Research Organization: Indiana Univ., Bloomington
• NSA Number: NSA-12-008642
• OSTI ID: 4349407
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 109; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BARYONS
BINDING ENERGY
COUPLING CONSTANTS
FIELD THEORY
HYPERFRAGMENTS
HYPERONS
INTERACTIONS
LAMBDA PARTICLES
NUCLEONS
NUMERICALS
PARTICLE MODELS
PERTURBATION THEORY
PHYSICS
PIONS
PSEUDOSCALAR
SCATTERING
SPIN
VECTORS
WEAK INTERACTIONS