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The £º can decay to Aº without changing strangeness, so it decays by the electromagnetic interaction Eº → Aº + y. In contrast, the charged E± decays to p or n by the weak interac- tion with characteristic lifetimes of 10-10 s. Why can’t E± decay to Aº by the strong inter- action in a much shorter time?

The £º can decay to Aº without changing strangeness, so it decays by the electromagnetic interaction Eº → Aº + y. In contrast, the charged E± decays to p or n by the weak interac- tion with characteristic lifetimes of 10-10 s. Why can’t E± decay to Aº by the strong inter- action in a much shorter time?

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The Eº can decay to Aº without changing strangeness, so it decays by the electromagnetic interaction E° → A° + y. In contrast, the charged E+ decays to p or n by the weak interac- tion with characteristic lifetimes of 10-10 s. Why can't E+ decay to Aº by the strong inter- action in a much shorter time?
Transcribed Image Text:The Eº can decay to Aº without changing strangeness, so it decays by the electromagnetic interaction E° → A° + y. In contrast, the charged E+ decays to p or n by the weak interac- tion with characteristic lifetimes of 10-10 s. Why can't E+ decay to Aº by the strong inter- action in a much shorter time?
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