On the universality of weak interactions

Nenhuma Miniatura disponível

Data

1962-02-01

Orientador

Coorientador

Pós-graduação

Curso de graduação

Título da Revista

ISSN da Revista

Título de Volume

Editor

Tipo

Artigo

Direito de acesso

Resumo

In classical physics the electromagnetic interactions can be introduced, on account of their universality, by the well-known formal procedure: p μ→p μ-(e/c)A μ. The universal gravitational interaction is also introduced formally as a change in metric: δμν→g μν=δμν+χμν. In analogy with these classical examples of universal interactions we shall propose here to introduce the universal leptonic interactions by a similar formal procedure of replacing baryonic currents J μ, Y μ (strangeness-conserving and violating currents) and boson-field operators ∂ μπ and ∂ μ K appearing in the non-leptonic interaction Lagrangian: ℒ=l[J μ + ∂ μ K+Y μ + ∂ μπ+h. c.] by J μ→J μ+αL μ, Y μ→Y μ+βL μ, and ∂ μπ→∂ μπ+αr 0 L μ, ∂ μ K→∂ μ K+βr 0 L μ, where {Mathematical expression} is the usual leptonic current, r 0=1.4·10-13 cm; α and β are constants which can be determined as α=1/4 and β=1. Then almost all leptonic interactions are introduced by this formal procedure and the predictions from the new Lagrangian are compared with experiments. The agreements are satisfactory, e.g., the well-known small probabilities of the leptonic decays of hyperons are reproduced by our new Lagrangian. © 1962 Società Italiana di Fisica.

Descrição

Palavras-chave

Idioma

Inglês

Como citar

Il Nuovo Cimento, v. 23, n. 3, p. 461-476, 1962.

Financiadores