Weak interaction Definition and 60 Threads

weak "force" this is really just a question about terminology, so I am not expecting any overly complex answers. I am familiar with the weak interaction, but in what sense is this a force? It is unlike anything that we would consider a force.. The only sense in which I can see it being...

Hi: The electromagnetic and weak interactions were unified in what is called the electroweak interaction, but as long as I know they are different classes of interactions, what I mean is that in weak interactions, there are particles that transform in others (like neutron's beta...

Is weak interaction invaraint under CPT Symmetry? Why?

Hi, i just need to get together all the conservations/violations that the weak interaction conserves/violates. I know about parity, charge conjugation and basic properties such as charge and lepton number but i was wandering if anybody could think of any more. No mathematics please! Thanks.

e^+ e^- \rightarrow \mu^+ \mu^- The reaction above can take place in two different ways: 1) The electromagnetic interaction by exchanging a \gamma 2) The weak interaction by exchanging a Z^0 Can somebody explain which way is more probable and why. I'm not sure but I guess that the...

Homework Statement Cross-sections for weak interactions at an energy E increase with E as E^2. Show that the rate of weak interactions in the early universe depends on the temperature T as \sigma_{wk} \propto T^52. The attempt at a solution The only formula I can find is \sigma_{wk} = g_{wk}^2...

Hello! I need help with an exercise about the weak interaction: How do the mass, the q-value and the vertices depend on the half-lifetime of a decay? The myon decay has a half-lifetime of 0.0000015 seconds, the neutron decay has a half-lifetime of 607 seconds. Why is there such a big...

Considering the decay of certain exotic mesons, such as the following: B^{+} --> D^{0} \pi^{+} Apparently the decay proceeds via a weak interaction where multiple W boson exchanges occur. I was trying to nut out how this actually occurs, and draw up a sensible Feynman diagram...

Hi, i have a particle physics exam in 2 days and am confused on pion decay via the weak interaction, namely: pi[-] ->muon + anti-muno neutrino Thankyou Ray Veldkamp

I've heard that the weak interaction actually governs fusion between hydrogen especially in the sun, how does this actually works?