7,414 research outputs found
Mass spectra of radially and orbitally excited states of mesons
Meson mass spectra, evaluated in the framework of the relativistic model of
quasi-independent quarks, are presented. Mass values are obtained with the help
of numerical calculations based on the Dirac equation and by phenomenological
mass formulae. The Dirac equation involves the potential, which is sum of the
vector quasi-Coulombic potential and the scalar linear rising confinement
potential. The phenomenological mass formulae are applied to excited meson
states consisting of u-, d-quarks and antiquarks with isotopical spin I=1. A
comparison of the evaluated mass spectra with existing data is performed.
Problems of identification of some meson states in vector and scalar channels
are discussed.Comment: 4 pages, Talk given at 12th Lomonosov Conference on Elementary
Particle Physics, Moscow, August 25-31, 200
Minimal Supersymmetric Standard Model within CompHEP software package
The Minimal Supersymmetric Standard Model is presented as a model for the
CompHEP software package as a set of files containing the complete Lagrangian
of the MSSM, particle contents and parameters. All resources of CompHEP with a
user-friendly interface are now available for the phenomenological study of the
MSSM. Various special features of the model are discussed.Comment: 11 pages, LaTeX, submitted to Comp. Phys. Communicatio
- …