Ph. Meyer

The algebra of currents and the ∣ ΔI ∣ = 12 rule for K-meson non-leptonic decay

Abstract The difficulties occuring in a recent derivation of the ∣ ΔI ∣ = 1 2 rule for the K meson decay into zero energy-momentum pions are removed by a suitable definition of the unphysical amplitude. The selection rule is shown to be valid only in the limit of zero pion mass or in special models.

The electromagnetic form factor of the neutrino

The electromagnetic form factor of the neutrino was considered assuming that the weak interactions are mediated by charged vector bosons with no anomalous magnetic moment. (R.E.U.)

The lee theory of intermediate bosons and the Kl3 decays

The Lee theory of weak interactions mediated by vector bosons is shown to be in contradiction with present experimental results on the leptonic decays of kaons. Assuming the present data to be correct, a more general class of intermediate boson theories, of which Lees is a member, is shown to be incorrect. (H.D.R.)

Proposal of an experiment on ɛ+--decays

SummaryA discussion is given of specific experimental conditions under which thes orp-wave nature of the decays ɛ+- → n+π+- can be determined through a study of the neutron polarization. Besides being a check of the δI| = 1/2 rule this experiment gives a measure of the ɛ+ polarizations and therefore leads to the determination of the magnitude and sign of the asymmetry coefficient λ0.RiassuntoSi discutono le condizioni sperimentali specifiche alle quali si puÒ determinare la natura di onda s o p dei decadimenti ɛ+-→ n+π+-, tramite uno studio della polarizzazione del neutrone. Oltre a costituire una verifica della regola |δI| =1/2, questo esperimento dà una misura della polarizzazione dei ɛ+ e quindi porta alla determinazione in grandezza e segno del coefficients di asimmetria α0.

The μ → e+γ decay and the intermediate charged vector boson theory

SummaryThe μ-e-γ vertex is calculated in the intermediate charged vector boson theory, as a function of the square of the four momentum of the photon. Consistency arguments show that the boson anomalous magnetic moment should be taken equal to zero. The result is then specialized to a real photon. The experimental branching ratio % MathType!MTEF!2!1!+-% feaafiart1ev1aaatuuDJXwAK1uy0Hwmaerbfv3ySLgzG0uy0Hgip5% wzamXvP5wqonvsaeHbfv3ySLgzaeXatLxBI9gBamXvP5wqSXMqHnxA% Jn0BKvguHDwzZbqehqvATv2CG4uz3bIuV1wyUbqehm0B1jxALjhiov% 2DaebbnrfifHhDYfgasaacH8qrps0lbbf9q8WrFfeuY-Hhbbf9v8qq% aqFr0xc9pk0xbba9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8% qqQ8frFve9Fve9Ff0dmeaaciGacmaadaWabiqaeaqbaqaagaaakeaa% ieaacqWFXpq8cqGH9aqpiiaacqGFOaakcqaH8oqBcqGHsgIRcqGFLb% qziqGacaqFRaGaeq4SdCMae4xkaKIae43la8Iae4hkaGIaeqiVd0Ma% eyOKH4Qae4xzauMae43kaSIaa0NDaiaa9TcaceqF2bGbaebaiqaaca% aFPaGaaWxpaiaa8fdacaaFUaGaaWNmaiabgglaXkaa8fdacaaFUaGa% aWxnaaaa!6256!

First-order violation of SU 3 invariance in the vector amplitude of leptonic decays of strange particles

\varrho = (\mu \to e + \gamma )/(\mu \to e + v + \bar v) = 1.2 \pm 1.5

ON THE PION-HYPERON RESONANCES AND ON THE POSSIBLE USES THEREOF. (DETERMINATION OF THE

fixes the cut-off value at less than one fifth the intermediate boson mass. It is concluded that this theory does not reasonably account for the experimental data, no matter how massive the boson is assumed to be.RiassuntoNella teoria del bosone vettoriale di carica intermedia, si calcola il vertice μ-e-γ come funzione del quadrato del tetraimpulso del fotone. Coerenti argomentazioni dimostrano che il momento magnetico anomalo del bosone dovrebbe essere assunto uguale a zero. Tale risultato è particolarizzato al caso di un fotone reale. Il rapporto sperimentale di « branching » % MathType!MTEF!2!1!+-% feaafiart1ev1aaatuuDJXwAK1uy0Hwmaerbfv3ySLgzG0uy0Hgip5% wzamXvP5wqonvsaeHbfv3ySLgzaeXatLxBI9gBamXvP5wqSXMqHnxA% Jn0BKvguHDwzZbqehqvATv2CG4uz3bIuV1wyUbqehm0B1jxALjhiov% 2DaebbnrfifHhDYfgasaacH8qrps0lbbf9q8WrFfeuY-Hhbbf9v8qq% aqFr0xc9pk0xbba9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8% qqQ8frFve9Fve9Ff0dmeaaciGacmaadaWabiqaeaqbaqaagaaakeaa% ieaacqWFXpq8cqGH9aqpiiaacqGFOaakcqaH8oqBcqGHsgIRcqGFLb% qziqGacaqFRaGaeq4SdCMae4xkaKIae43la8Iae4hkaGIaeqiVd0Ma% eyOKH4Qae4xzauMae43kaSIaa0NDaiaa9TcaceqF2bGbaebaiqaaca% aFPaGaaWxpaiaa8fdacaaFUaGaaWNmaiabgglaXkaa8fdacaaFUaGa% aWxnaaaa!6256!