K+ Decay: Is the Feynman Diagram I Drew Correct?

  • Context: Graduate 
  • Thread starter Thread starter billbray
  • Start date Start date
  • Tags Tags
    Decay Weak
Click For Summary
SUMMARY

The forum discussion centers on the K+ decay process, specifically the Feynman diagram associated with the decay K+ → u+ + Vu. The initial assumption was that the decay occurs via a W boson, which is accurate. However, it was clarified that the decay actually produces three pions: one positive and two negative. The participants confirmed the correctness of the diagram while noting that an alternative decay channel was being referenced.

PREREQUISITES
  • Understanding of weak interactions in particle physics
  • Familiarity with Feynman diagrams and their representation of particle interactions
  • Knowledge of particle decay processes, specifically K+ decay
  • Basic concepts of bosons, particularly the W boson
NEXT STEPS
  • Study the properties and roles of the W boson in weak interactions
  • Explore K+ decay channels and their corresponding Feynman diagrams
  • Learn about the significance of pions in particle physics
  • Review examples of particle decay processes from reputable sources like CERN
USEFUL FOR

Particle physicists, students studying quantum mechanics, and anyone interested in the intricacies of particle decay processes and Feynman diagrams.

billbray
Messages
24
Reaction score
0
I've attached a feynman diagram i drew myself because i can't find a proper feyman diagram for this decay. I assume that since the decay K+->u+ + Vu is weak it goes via a W boson.

Is this diagram correct?

thanks
 

Attachments

  • KAON DECAY.JPG
    KAON DECAY.JPG
    9.9 KB · Views: 1,886
Physics news on Phys.org
The diagram is correct. IcedEcliptic is talking about another decay channel.
 
Vanadium 50 said:
The diagram is correct. IcedEcliptic is talking about another decay channel.

Sorry, my mistake.
 
thanks guys!
 

Similar threads

Undergrad How Does Beta Decay Relate to the Role of W Bosons in Weak Nuclear Force?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Are unstable particles ever really external lines in QFT?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad I don't understand this Feynman Diagram
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Beta/gamma decay probabilities
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How does the strange and anti-up quark produce a W-boson in K-minus decay?
  • · Replies 6 ·
Replies
6
Views
2K
High School What is meant by decay constant?
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Dominant Feynman diagram for ##b \to s ~l^+ l^−##
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Confused about Feynman diagrams
  • · Replies 10 ·
Replies
10
Views
4K
Graduate D0-> K+ K- Decay Suppression - A Puzzling Question
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Beta plus and Beta minus decay
  • · Replies 6 ·
Replies
6
Views
3K