7.3 Learning Feynman Diagrams

​7.3 Learning Feynman Diagrams.

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Some text here about the topic of discussion

Multiple Choice

State the interaction shown in the Feynman Diagram.

• emission of photon by electron

• emission of photon by positron

• absorption of photon by electron

• absorption of photon by positron

Multiple Choice

State the interaction shown in the Feynman Diagram.

• emission of photon by electron

• emission of photon by positron

• absorption of photon by electron

• absorption of photon by positron

Multiple Choice

State the interaction shown in the Feynman Diagram.

• emission of photon by electron

• emission of photon by positron

• absorption of photon by electron

• absorption of photon by positron

Multiple Choice

State the interaction shown in the Feynman Diagram.

• absorption of electron by positron

• absorption of positron by electron

• annihilation

• pair-production

Multiple Choice

State the interaction shown in the Feynman Diagram.

• absorption of electron by positron

• absorption of positron by electron

• annihilation

• pair-production

Multiple Choice

Is the interaction shown in the Feynman Diagram allowed?

• yes, any two electrical charges can transformed into a photon.

• no, only a particle and anti-particle can transform into a photon.

Multiple Choice

Is the interaction shown in the Feynman Diagram allowed?

• yes

• no

Multiple Choice

Is the interaction shown in the Feynman Diagram allowed?

• yes

• no

Multiple Choice

The pair-production is the vertex:

• A

• B

• C

• D

Multiple Choice

Is this interaction allowed?

• No, A can't be possible

• No, B can't be possible

• No, C can't be possible

• No, D can't be possible

Explanation Slide...

Only the collision of a matter and its antimatter can produce a photon.

Vertex C is where two matter particles meet ... impossible to produce a photon!

Multiple Choice

The emission of a photon by an electron is the vertex:

• A

• B

• C

• D

Multiple Choice

Is the interaction shown in the Feynman Diagram allowed?

• yes

• no

Multiple Choice

Is the interaction shown in the Feynman Diagram allowed?

• yes

• no, Vertex B is impossible

• no, Vertex C is impossible