- Access by Xinjiang University
Nonstatic spin-independent term in the quarkonium potential
Phys. Rev. D 42, 2408 – Published 1 October, 1990
DOI: https://doi.org/10.1103/PhysRevD.42.2408
Abstract
Using the potential of Lichtenberg et al., we compare the spin-averaged energy levels in charmonium calculated with three different wave equations: the Klein-Gordon equation, the Schrödinger equation, and the Fermi-Breit reduction of the Klein-Gordon equation. The Fermi-Breit reduction contains a nonstatic, spin-independent term in the quarkonium potential even in the absence of such a term in the Klein-Gordon equation. We examine the effect of this nonstatic term.
References (12)
- M. G. Olsson and C. J. Suchyta III, Phys. Rev. D 36, 1459 (1987)
- D. B. Lichtenberg, Int. J. Mod. Phys. A 2, 1669 (1987)
- E. Eichten and F. L. Feinberg, Phys. Rev. Lett. 43, 1205 (1979)
- D. Gromes, Z. Phys. C 26, 401 (1984)
- J. Pantaleone, S.-H. H. Tye, and Y. J. Ng, Phys. Rev. D 33, 777 (1986)
- A. De Rújula, H. Georgi, and S. L. Glashow, Phys. Rev. D 12, 147 (1975)
- J. Pumplin, W. Repko, and A. Sato, Phys. Rev. Lett. 35, 1538 (1975) H. J. Schnitzer, Phys. Rev. D 13, 74 (1976)
- D. Gromes, Nucl. Phys. B131, 80 (1977)
- M. G. Olsson and K. J. Miller, Phys. Rev. D 28, 674 (1983)
- D. B. Lichtenberg, E. Predazzi, R. Roncaglia, M. Rosso, and J. G. Wills, Z. Phys. C 41, 615 (1989) ; 47, 83 (1990)
- E. Eichten, K. Gottfried, T. Kinoshita, J. Kogut, K. D. Lane, and T.-M. Yan, Phys. Rev. Lett. 34, 369 (1975)
- Particle Data Group, G. P. Yost et al., Phys. Lett. B 204, 1 (1988)