Hadronic strangeness-changing weak decays approximately obey the ΔI = 1/2 rule, that is the total isospin changes by 1/2 in the decay. By adding a fictitious strangeness zero I = 1/2 boson S in the initial state, find the prediction of this rule for the ratio

assuming that the state |Ξ⁰, S^€‘] is an equal mixture of states with I = 0 and I = 1.

Transcribed Image Text:

Г(Е — Л+ т) R = Г(Е0 — Л + то)