ar X iv : h ep - p h / 03 08 31 0 v 1 2 9 A ug 2 00 3 1 Ground State Baryons in Covariant Level - Classification Scheme

ar X iv : h ep - p h / 03 08 31 8 v 1 2 9 A ug 2 00 3 On the structure of the scalar and D mesons

The qq spectrum is studied within a chiral constituent quark model. It provides with a good fit of the available experimental data from light (vector and pseudoscalar) to heavy mesons. The new D states measured at different factories are studied. The 0 ++ light mesons are analyzed as q ¯ q pairs or tetraquark structures.

ar X iv : h ep - t h / 04 08 12 5 v 1 1 7 A ug 2 00 4 Field theoretic models on covariant quantum spaces

ar X iv : h ep - p h / 01 03 31 7 v 1 2 9 M ar 2 00 1 g - 2 in composite models of leptons

Based on the bound state description of muon and general relativistic covariant quantum field theory, we illustrate with a simple composite model that the observed deviation of (g − 2)μ can be a demonstration of the substructure of muon and give a constraint on the radius of muon in a light constituent model or the masses of constituents in a heavy constituent model.

ar X iv : h ep - p h / 05 06 16 0 v 2 9 A ug 2 00 5 Ground State Baryons in Ũ ( 12 ) Scheme Muneyuki Ishida

The properties of ground-state baryons of light-quarks are investigated in Ũ(12)classification scheme of hadrons, recently proposed by us. In Ũ(12), in addition to the ordinary 56 of SU(6)SF , the existence of the extra 56 with positive-parity and 70 with negative-parity appear as ground-states in lower mass region. The N(1440), Λ(1600) and Σ(1660) have the plausible properties of masses and st...

ar X iv : h ep - p h / 98 03 22 4 v 1 3 M ar 1 99 8 NONLEPTONIC DECAYS : AMPLITUDE ANALYSIS AND SUPERMULTIPLET SCHEMES

We give best covariant amplitude decompositions for two-body decay processes involving ground state hadrons (0−, 1−, 1 2 + , 3 2 + ) and show how these are simply related to helicity amplitudes. After discussing how electromagnetic interactions are incorporated via meson dominance in a relativistic supermultiplet scheme, we extend the analysis to weak flavour changing nonleptonic processes. Suc...