Haruichi Yabuki

Veneziano's model and nonet scheme for 1− and 2+ mesons

Abstract Veneziano-type amplitudes for ππ, πK, KK and KK scattering are constructed and normalized at the ϱ pole. S-wave scattering lengths are calculated in good agreement with those obtained by the method of current algebra, except for KK scattering. Present approach demands a nonet scheme for 1− and 2+ mesons.

Elastic proton-proton scattering at large momentum transfer in parton field theory

Abstract The constituent interchange model is investigated by means of the DGSIN (Deser-Gilbert-Sudarshan-Ida-Nakanishi) integral representation for the Bethe-Salpeter wave function. It is shown that this model gives a consistent picture (i.e. magnitude and dependence on energy and angle) of proton-proton elastic large-angle scattering when the constituent mass is around 30 MeV.

Relativistic wave equation for the harmonically confined quark-antiquark system

Abstract A covariant wave equation with simple algebraic structure is proposed to described the binary quark-antiquark system. The harmonic confinement mechanisms built in the equation leads to the linear square-mass spectrum with adjustable hyperfine splitting.

A grand unified wave function

A variant of wave functions describing all fundamental fermions (quarks and leptons) is presented. It represents a peculiar pattern of generations, of which the first consists of (ve, e, u, d; vμ, μ, c, s) and the second contains quarks and leptons with unorthodox electric charges as well as τ, vτ and b.

Null-plane quantization and Haag's theorem

It is pointed out that for the null-plane quantization a paradox arises in connection with Haags theorem. A prescription is proposed to overcome this difficulty.

ON THE PROPOSITION GIVEN BY T. T. WU CONCERNING THE EXPONENTIAL DECREASE OF THE HIGH-ENERGY LARGE-ANGLE DIFFERENTIAL CROSS SECTION.

T. T. Wus postulate for the vertex function proposed to reproduce the exponential decrease of the high-energy large-momentum-transfer cross section is studied in terms of the 10st-Lehmann-Dyson representation, its weight function being adjusted appropriately in a large momentum region.