I A question about a Feynman Diagram

AI Thread Summary
The discussion centers on the interpretation of Feynman diagrams, specifically the direction of arrows representing particles and antiparticles. It clarifies that the arrows indicate particle types rather than their motion direction. The original diagram is criticized for being drawn incorrectly, with suggestions that the W-boson decay should produce an electron and an electron-antineutrino. Additionally, there are concerns about the depiction of muon capture, noting that it incorrectly includes anti-leptons and misrepresents the muon. Overall, the conversation highlights the importance of accurate representation in particle physics diagrams.
heavybuilder
Messages
9
Reaction score
0
Could somebody explain me this?: Why is the arrow of the electron-antineutrino pointed towards the W-boson and not as in the second picture upwards?

200604-0381886c10f70a8a3fbc138b06ad0374.jpg

200603-561b1be3b60e68d907c72417e7e94a26.png


This is my first post and also haven't learned too much about physics yet so please if anything is unclear hit me up.
 

Attachments

  • m7colg.png
    m7colg.png
    3.2 KB · Views: 719
  • 220px-Beta_Negative_Decay.svg.png
    220px-Beta_Negative_Decay.svg.png
    2.7 KB · Views: 787
  • 200603-561b1be3b60e68d907c72417e7e94a26.png
    200603-561b1be3b60e68d907c72417e7e94a26.png
    1.2 KB · Views: 545
Physics news on Phys.org
Because somebody drew it backwards.
 
Vanadium 50 said:
Because somebody drew it backwards.
The one that is drawn on is mine. The correct one should be the other one
 
Then you drew it backwards.

The arrows indicate particle/antiparticle, not direction of motion.
 
So if i get it right: If a W- boson decays like here the output will be an electron-antineutrino and an electron?
 
Oh and another question, this picture is about muon capture but it isn't right is it? First of all there are no anti-leptons so it can't be right: L=1+1=2 second of all the muon isn't an antimuon so the arrow should be the other way around, shouldn't it?
200630-00635183a59201057a813a392e7dc67f.jpg
 

Attachments

  • Muon_Capture_Feynman_diagram.svg.png
    Muon_Capture_Feynman_diagram.svg.png
    3.6 KB · Views: 753
Thread 'Is there a white hole inside every black hole?'

Thread 'Is there a white hole inside every black hole?'

This is what I am thinking. How much feasible is it? There is a white hole inside every black hole The white hole spits mass/energy out continuously The mass/energy that is spit out of a white hole drops back into it eventually. This is because of extreme space time curvature around the white hole Ironically this extreme space time curvature of the space around a white hole is caused by the huge mass/energy packed in the white hole Because of continuously spitting mass/energy which keeps...
View full post »

Similar threads

Question about Feynman diagram showing annihilation
Replies
4
Views
764
LaTeX LaTeX formatting Feynman Diagrams incorrectly
Replies
3
Views
4K
I Feynman diagrams and sum over paths
Replies
5
Views
2K
B Feynman Diagrams: Uncovering the Issue
Replies
3
Views
2K
I Understanding Neutron Star Formation Through Feynman Diagrams
Replies
4
Views
2K
I I don't understand this Feynman Diagram
Replies
3
Views
2K
I Electroweak Feynman Rules: Confusion about the photon-W boson interaction term
Replies
2
Views
2K
I Calculating a particular amplitude with Feynman diagrams
Replies
2
Views
2K
I Confused about Feynman diagrams
Replies
10
Views
3K
Solid State A guide to Feynman diagrams in the many-body problem
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top