Recent content by Ajihood

You have to be careful when treating virtual particles, because the only reason they exist is due to the uncertainty principle associated with energy and time. When you want these virtual particles to become real particles (Ie you can point to a location of space and say they exist) you need...

Hey guys (this is not a HW problem, just general discussion about the solution that is not required for the assignment), So I am doing this problem where I had to find the eigenvalues and eigenvectors of the Hamiltonian: H = A*S_{x}^{2} + B*S_{y}^{2} + C*S_{z}^{2}. Easy enough, just...

Ah I see now. I forgot I had two functions that I had to use the product rule on. Silly me! Thanks for the help Jason.

Hi Guys, I am doing an Electromagnetism course at uni and we just derived Poynting's Theorem in class. However, he left steps for us to fill in and that is why I have a question. In the derivation we get the dot product: B dot dB/dt and E dot dE/dt where both B and E are...

Sorry, I just want to get this clear, as I am pretty sure I have it right but I think I am misunderstanding what you just meant. My Feynman diagram has a c \rightarrow d and in that process it emits a W+. This W+ then decays to a u and anti-s. I thought charge is conseved overall in this. I...

Thanks Diazona. I just wanted to double check that, as I have never seen an example of that occurring! Also, since I have a c \rightarrow u and W+ \rightarrow u + anti-s I have two vertices for the decay D0 \rightarrow K+ + \pi-. This means the total decay rate will depend on the square of...

Thanks for that fzero. I thought it could because of the CKM matrix but I have only seen examples of where it decays to u and anti d etc so I was a little worried that there may be more there I haven't learned yet. Thanks again :)

Hey Guys, Just a quick question. Can a W boson decay to a u and anti s or does it have to decay to a quark and anti-quark of the same generation? Thanks!

Homework Statement Hi guys, I have been given the problem of drawing the feyman diagrams and finding the decay rates for the two decays: D0 \rightarrow K+ + \pi- and D0 \rightarrow K- + \pi+ D0 \rightarrow \pi- + \pi+ Homework Equations The coupling constant g = 10^-5 for the weak...

I guess no one can help :( I am going to run with I(0) = A2b2(1+c)2 I find this when I put \theta=0. Thus I have to introduce K as a denomiator to cancel the (1+c)2. The only problem I have with that is that I swear it looks like it will cancel c's effect on the amplitude...

In class we have been deriving the Fraunhofer interference pattern for a double slit experiment. I now have a question of having to derive it if one of the slits is covered with an absorbing material. I have got the equation out but I am missing a constant K... Homework Statement We have two...