Feynman diagrams strong process

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Discussion Overview

The discussion revolves around the Feynman diagrams for the strong interaction process ##\pi^- + p \rightarrow \Lambda_c^+ + D^-##. Participants are examining the correctness and quality of the diagrams presented, focusing on aspects of conservation laws and the order of the strong coupling constant.

Discussion Character

  • Technical explanation, Debate/contested, Homework-related

Main Points Raised

  • One participant presents a Feynman diagram for the process and asks for validation of its correctness.
  • Another participant suggests that while the diagram is not incorrect, they would not give it much credit, implying a lack of confidence in its quality.
  • A later reply indicates that a revised diagram is of a lower order in the strong coupling constant, questioning whether this improvement is significant.
  • There is a clarification that the discussion is not related to homework, but rather a casual discussion about Feynman diagrams.
  • One participant notes that the rules of the forum seem to favor homework-like problems, even if the discussion is informal.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the quality of the diagrams. There are differing opinions on the significance of the revisions made to the diagrams and the context of the discussion.

Contextual Notes

Participants express uncertainty regarding the evaluation criteria for the diagrams and the implications of the order of the strong coupling constant in their assessments.

Aleolomorfo
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TL;DR
Write the Feynman diagram for a strong scattering
Hello everybody!

I have to write the Feynman diagrams for the process ##\pi^- + p \rightarrow \Lambda_c^+ + D^-##. It is a strong process since all the quantum numbers are conserved.
I have attached my attempt, is it correct?

Thank you all in advance!
 

Attachments

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Aleolomorfo said:
I have attached my attempt, is it correct?

It is not wrong, but I would probably not give it much credit. (And since this looks like homework, I don't want to say more.)
 
Vanadium 50 said:
It is not wrong, but I would probably not give it much credit. (And since this looks like homework, I don't want to say more.)

Thank you for the reply. The attached diagram is better? The previous diagram is ##\mathcal{O}(\alpha_s^2)##, instead this one is ##\mathcal{O}(\alpha_s)##, isn't it?

PS It is not homework, I was just discussing about Feynman diagrams with a mate of mine.
 

Attachments

Sure does look better...but the rule here is for homework-like problems. Even if they are really a bar bet.
 

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