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- Title
Spectroscopy and Regge trajectories of heavy quarkonia and B mesons.
- Authors
Ebert, D.; Faustov, R.; Galkin, V.
- Abstract
The mass spectra of charmonia, bottomonia and B mesons are calculated in the framework of the QCD-motivated relativistic quark model based on the quasipotential approach. The dynamics of heavy quarks and antiquarks is treated fully relativistically without application of the nonrelativistic v/ c expansion. The known one-loop radiative corrections to the heavy quark potential are taken into account perturbatively. The heavy quarkonium masses are calculated up to rather high orbital and radial excitations ( L=5, n=5). On this basis the Regge trajectories are constructed both in the total angular momentum J and radial quantum number n. It is found that the daughter trajectories are almost linear and parallel, while parent trajectories exhibit some nonlinearity in the low mass region. Such nonlinearity is most pronounced for bottomonia and is only marginal for charmonia. The obtained results are compared with the available experimental data, and a possible interpretation of the new charmonium-like states above open charm production threshold is discussed.
- Subjects
REGGE trajectories; MESON spectroscopy; QUARK models; QUANTUM trajectories; CHARMONIUM; HEAVY particles (Nuclear physics); B mesons
- Publication
European Physical Journal C -- Particles & Fields, 2011, Vol 71, Issue 12, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-011-1825-9