Pseudoscalar and vector mesons as q{ovr q} bound states.
Two-body bound states such as mesons are described by solutions of the Bethe-Salpeter equation. We discuss recent results for the pseudoscalar and vector meson masses and leptonic decay constants, ranging from pions up to c{bar c} bound states. Our results are in good agreement with data. Essential in these calculation is a momentum-dependent quark mass function, which evolves from a constituent-quark mass in the infrared region to a current quark mass in the perturbative region. In addition to the mass spectrum, we review the electromagnetic form factors of the light mesons. Electromagnetic current conservation is manifest and the influence of intermediate vector mesons is incorporated self-consistently. The results for the pion form factor are in excellent agreement with experiment.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); FOR
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 925214
- Report Number(s):
- ANL/PHY/CP-114993; TRN: US0802376
- Journal Information:
- J. Phys.: Conf. Ser., Vol. 9, Issue 2005; Conference: 1st Meeting of the American Physical Society "Topical Group on Hadronic Physics"; Oct 24-26, 2004; Batavia, IL
- Country of Publication:
- United States
- Language:
- ENGLISH
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