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Title: K{sub e4} decay as a source of information about the σ-particle mass and about the nature of spin-1 mesons

Data on the form factors for K{sub e4} decay make it possible to fix the value of a parameter that is not determined by the theory itself and which is contained in the Lagrangian for the system formed by 0{sup +} and 0{sup −} mesons. This makes it possible to find the mass of the lightest σ meson: mσ = 663 MeV. As for the nature of spin-1 mesons, which also contribute to the form factors for K{sub e4} decay, data on them give no way to interpret spin-1 mesons as gauge bosons of chiral theory.
Authors:
 [1]
  1. National Research Center Kurchatov Institute, Institute of Theoretical and Experimental Physics (Russian Federation)
Publication Date:
OSTI Identifier:
22314745
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 77; Journal Issue: 12; Other Information: Copyright (c) 2014 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 74 ATOMIC AND MOLECULAR PHYSICS; CHIRALITY; FORM FACTORS; LAGRANGIAN FUNCTION; MESONS; PARTICLE DECAY; SPIN