Can Non-Strange Particles Be Produced in Pairs?

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SUMMARY

Kaons and pions are both produced via the strong interaction, with kaons specifically always produced in pairs, unless accompanied by another particle containing a strange quark. The discussion clarifies that while strange particles are typically associated with pair production, non-strange particles like pions can also be produced in pairs or as single entities. This distinction is crucial for understanding particle interactions in high-energy physics.

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laurengc
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I thought only strange particles were produced in pairs via the strong interaction, however in my textbook it states 'kaons, like pions are produced in pairs via the strong interaction'.

Can particles that are not strange also be produced in this way?
 
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Pions can be produced in pairs, they can also be produced as single particles.
Kaons are always* produced in pairs by the strong interaction.

*unless some other particle with a strange quark is produced.
 
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