Octet Magnetic Moments with Null Instantons and Semibosonized Nambu-Jona-Lasinio Model

It is shown that the difference between the magnetic moment results in the quark model with null instantons and semibosonized Nambu-Jona-Lasinio model lies in the description of the magnetic moment of the $\Lambda$-hyperon.Comment: RevTex, 6 pages, submitted to Progr.Theor.Phy

Generalized Gordon Identities, Hara Theorem and Weak Radiative Hyperon Decays

It is shown that an alternative form of the parity-nonconserving (PNC) transition electromagnetic current resolves partly a puzzle with the Hara theorem. New formulation of it has allowed PNC weak radiative hyperon transitions of the charged hyperons $\Sigma^{+} \Rightarrow p + \gamma$ and $\Xi^{-} \Rightarrow \Sigma^{-} + \gamma$ revealing hitherto unseen transition toroid dipole moment.Comment: LaTex, 7 pages, 2 tables added, text also change

Transition Radiation of the Neutrino Toroid Dipole Moment

We discuss the transition radiation of a neutrino induced by its toroid dipole moment (τ) when crossing the interface between two different media with different refraction indices. A neutrino of 1 MeV energy emits approximately 10 −40 keV at τ = e √ 2GF/π 2. This effect depends very slightly on the neutrino mass and has a finite value in the massless limit. I