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Prog. Theor. Phys. Vol. 61 No. 2 (1979) pp. 548-558

Electromagnetic Mass Differences of Lowest Lying Hadrons and Behavior of Quarks in Hadrons

Chiaki Itoh, Toshiyuki Minamikawa,^* Kimio Miura^** and Tsunetoshi Watanabe^***

Department of Physics, Meiji-Gakuin University, Shirokanedai, Tokyo 108
^*Department of Physics, Tokyo University of Mercantile Marine Etchujima, Tokyo 135
^**Department of Physics, Nippon Medical School, Kawasaki 211
^***Department of Physics, Asia University, Musashino, Tokyo 180

(Received May 15, 1978)

Abstract:

Electromagnetic mass differences of lowest lying hadrons are investigated in the quark model with Gaussian wave functions. The Fermi-Breit interactions for one photon exchange and one gluon exchange terms are calculated. To fit the electromagnetic differences of baryons (N, Σ, Ξ) and mesons (π, K) with the common quark mass difference m_d-m_u, we must introduce different relative distances between quarks in a baryon due to spin-spin interactions. This produces the negative charge radius of neutron. The electromagnetic mass difference of the charmed meson D⁺-D⁰ is predicted to be 4.8MeV in good agreement with experiments.

URL : http://ptp.ipap.jp/link?PTP/61/548/
DOI : 10.1143/PTP.61.548

[ Full Text PDF : FREE ACCESS (818K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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Citing Article(s) :

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   The Lowest (1/2⁺ and 0^-) Hadron Masses and the Behavior of the Constituent Quarks

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2. Progress of Theoretical Physics Vol. 67 No. 2 (1982) pp. 709-710 :

   Nucleon Magnetic Moment and Spin-Orbit Term in Quark Quark Interaction

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3. Progress of Theoretical Physics Vol. 67 No. 4 (1982) pp. 1247-1250 :

   Gluon-Exchange Contributions to Nonleptonic Hyperon Decays

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4. Progress of Theoretical Physics Vol. 75 No. 1 (1986) pp. 205-207 :

   Electromagnetic Mass Differences of Heavy Quark Mesons

   S. N. Sinha, S. I. H. Naqvi and D. Y. Kim

5. Progress of Theoretical Physics Vol. 79 No. 2 (1988) pp. 280-283 :

   Discrepancies between Additive Quark Model and Experiments of Baryon Magnetic Moments

   Kimio Miura

6. Progress of Theoretical Physics Vol. 80 No. 2 (1988) pp. 208-211 :

   Mass Differences of Baryon Isomultiplets and Σ_c⁺⁺ - Σ_c⁰

   Chiaki Itoh, Toshiyuki Minamikawa, Kimio Miura and Tsunetoshi Watanabe

7. Progress of Theoretical Physics Vol. 114 No. 2 (2005) pp. 359-368 :

   η_b, B_c and a Hybrid Potential

   Chiaki Itoh, Kimio Miura and Tsunetoshi Watanabe

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