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Prog. Theor. Phys. Vol. 71 No. 6 (1984) pp. 1303-1317

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A Confining Potential Model for a Quark Core and Its Surrounding Pion Clouds

Masayuki Uehara and Hiroki Kondo

Department of Physics, Saga University, Saga 840

(Received December 15, 1983)

Abstract:

We discuss a confining potential model for a baryon, preserving spontaneously broken chiral symmetry. Every quark in the baryon is described independently of each other by the Dirac equation with a linear confining scalar potential, and pions are introduced as Nambu-Goldstone bosons so as to realize spontaneously broken chiral symmetry. Within the one loop approximation for the pion interaction and the first order perturbation in the color coupling constant αs, we obtain good fits for static quantities of a nucleon such as the GA / GV ratio, gA, charge radii, anomalous magnetic moments and a mass, and αs turns out to be near one, which is compared with the value αs =2.2 of the MIT bag model.


URL : http://ptp.ipap.jp/link?PTP/71/1303/
DOI : 10.1143/PTP.71.1303

[ Full Text PDF : FREE ACCESS (879K) ] Citation:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 74 No. 1 (1985) pp. 178-181 :
    The Enhancement of the Δ(1232) Width
    Masayuki Uehara, Ichio Fukui and Hiroki Kondo
  2. Progress of Theoretical Physics Vol. 74 No. 3 (1985) pp. 637-640 :
    Pion-Quark Interaction and Baryon Mass Splitting
    Y. Iwamura, Y. Nogami and N. Ohtsuka
  3. Progress of Theoretical Physics Vol. 76 No. 6 (1986) pp. 1334-1339 :
    The Hyperfine Splitting of the Nucleon and the Δ33 and the Coulomb Spike Effect
    Hiroki Kondo, Ichio Fukui and Masayuki Uehara
  4. Progress of Theoretical Physics Vol. 77 No. 3 (1987) pp. 502-507 :
    A Variational Approach to Chiral Quark Models
    Yasuhiko Futami, Yasuhiko Odajima and Akira Suzuki
  5. Progress of Theoretical Physics Vol. 78 No. 2 (1987) pp. 370-386 :
    Variational Approach to πN Scattering in a Chiral Quark-Pion Model
    Koetsu Fujiwara and Masayuki Uehara
  6. Progress of Theoretical Physics Vol. 84 No. 3 (1990) pp. 377-380 :
    The Nonlinear Effects of Pion-Quark Coupling in the Cloudy Bag Model
    Yasuhiko Futami and Satoru Akiyama

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