A Level physics unit 1

The physics textbook is oriole at explaining and clarifying things. They had one job! Omfg.

acoording to the horrible textbook, it says like Kaons are only involved in strong and electromagnetic interactions, then four pages later it mentions that it says "although these strange particles all decay through the strange interaction".

so what? What interactions does Kaons actually take part in? Once the strangeness isn't conserved, can we say it is a weak interaction straight away? Why isn't the interaction K- + p -> n + Pi 0 possible? Are all decays in the form of: something -> something else + something else?

shout out to the experts who wrote the book.

Thanks in advance for any help.

Reply 1

kelefi

19

a Kaon is a hadron. it interacts through strong and EM interactions,as it is also charged. All particles take part in weak interactions as well as gravity. in other words, kaons take place in all 4 particle interactions. if strangeness isnt conserved, the interaction MUST be weak - this is the process of changing the quark composition of particles. the term "decay" involves a single particle (in our case, a kaon) decaying (breaking down) into smaller particles, so yes decays are in the form of something->something+something (+something however many times)

Reply 2

SamLLLLiu

OP

8

Original post by kelefi

a Kaon is a hadron. it interacts through strong and EM interactions,as it is also charged. All particles take part in weak interactions as well as gravity. in other words, kaons take place in all 4 particle interactions. if strangeness isnt conserved, the interaction MUST be weak - this is the process of changing the quark composition of particles. the term "decay" involves a single particle (in our case, a kaon) decaying (breaking down) into smaller particles, so yes decays are in the form of something->something+something (+something however many times)

Thank you again 👍👍

A Level physics unit 1

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