Nonperturbative treatment of gluons and pseudoscalar mesons in baryon spectroscopy
Journal Article
·
· Physical Review, C
- Department of Physics, Temple University, Philadelphia, Pennsylvania 19122 (United States)
We study baryon spectroscopy including the effects of pseudoscalar meson exchange and one gluon exchange potentials between quarks, using nonperturbative, hyperspherical method calculations. We find that a model that includes only gluon exchange cannot simultaneously describe the Roper and {ital P}-wave excitation energies. Using only pseudoscalar meson exchange partially cures this problem, but at the cost of using a relatively large pion quark coupling constant. However, one gets a similar agreement with data in a model with both effects by using a quark-meson coupling constant compatible with the measured pion-nucleon coupling constant, and a value of {alpha}{sub {ital s}}{approx_equal}0.35. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 284000
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 53; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
Similar Records
Quark-meson coupling model for baryon wave functions and properties
Meson, baryon, and glueball masses in the MIT bag model
K-MESON CONTRIBUTION TO FORCES BETWEEN BARYONS
Journal Article
·
Wed Jan 31 23:00:00 EST 1990
· Physical Review, D (Particles Fields); (USA)
·
OSTI ID:6981713
Meson, baryon, and glueball masses in the MIT bag model
Journal Article
·
Thu Mar 31 23:00:00 EST 1983
· Phys. Rev. D; (United States)
·
OSTI ID:6033000
K-MESON CONTRIBUTION TO FORCES BETWEEN BARYONS
Journal Article
·
Fri Mar 14 23:00:00 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· Physical Review (U.S.) Superseded in part by Phys.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
·
OSTI ID:4349407