What are the different forces that can contribute to particle decay processes?

Islam Hassan
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What drives particle decay? Is it an elementary, irreducible observation or can we model it based on a set of observable variables?

Do all particle decay modes involve the weak force? Does one even need the intervention of a given force to have particle decay?

Does string theory explain decay in terms of things like string tension, oscillation, etc?

IH
 
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Beta decay (and related processes) are governed by the weak force. Alpha decay and fission are strong plus em force results.
 

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