All Questions
7
questions
0
votes
1
answer
45
views
A very basic question about particle (leptons, hadrons) interactions
Suppose a particle reaction $A+B\to C+D$ is allowed in nature. Then, the reactions,
\begin{align}
A&\to \bar{B}+C+D,\\ \bar{C}+\bar{D}&\to \bar{A}+\bar{B},\\ B&\to\bar{A}+C+D,\\& \...
- 11.8k
0
votes
2
answers
136
views
EM force or Strong force?
$$
e^- + p \rightarrow \Delta^{++} + e^- + \pi^-
$$
Apparently this reaction is mediated by the EM force. My question is: how do you know it isn't the strong force?
Yes, all the particles have ...
- 101
1
vote
1
answer
231
views
If isospin is conserved in a given strong interaction, can we say that the interaction is certainly allowed?
If isospin is conserved in a given strong interaction, can we say that it is certainly allowed and it's not needed to check other conservation rules like baryon number, electric charge etc. ?
- 13
0
votes
0
answers
164
views
Why is the decay $\rho ^+ \rightarrow \rho ^0 \pi^+$ allowed by parity conservation and angular momentum conservation?
In the following decay:
$$\rho ^+ \rightarrow \rho ^0 \pi^+$$
where $\rho^+$ and $\rho^0$has $J^P = 1^-$ and $\pi^+$ has $J^P = 0^-$
The parity conservation $P$ entails that $L$ (orbital angular ...
user63248
3
votes
2
answers
2k
views
Why can omega meson not decay into two charged pions?
Why is the decay of the $\omega$ meson similiar to the neutral $\rho^{0}$ meson into two charged $\pi$ prohibited?
My first thought was that it has something to do with isospin conservation in the ...
- 117
-2
votes
2
answers
133
views
Is a reaction involving hadrons always strong (given conservation laws are satisfied)?
This question is partly related to two of my earlier questions: If a particle interaction does not violate conservation laws will it occur? and Could $p+p\rightarrow \pi^++d$ occur via the weak ...
4
votes
2
answers
13k
views
Difference between weak and strong interactions?
This was a statement given in my class:
"Strangeness is conserved in the strong and electromagnetic interactions, but not in a weak interaction "
But could someone please tell me how we ...
- 2,137