The strangeness changing axial vector coupling constant

Weak-Interaction Universality and Octet Dominance

“…It can easily be seen from Eq. (8) and Table I that the reason for its low value is an approximate cancellation between Iy and Ip. Presumably a better estimate of the axial-vector form factors (which contribute only to Ip) would lead to more exact cancellation.…”

Magnetic Moments of the Strange Baryons and the Algebra of Currents

“…2 In this technique algebraic methods appear in conjunction with those of dispersion theory. The early application of these techniques, along with partially conserved axial-vector current (PCAC), 3 leading to the remarkable evaluation of the renormalization of the axialvector /3-decay coupling constant by Adler and Weisberger,4 has brought this subject to the forefront. Since then many interesting results have been obtained by various authors, 5 thereby strengthening further one's confidence in this approach in particle physics.…”

“…be noted that, since K°, B2 3 , and (P M )2 3 are related by PCAC according to Eqs (4). and(5), the proportionality constant CK disappears from both sides of the Eq.…”