All Questions
17
questions
2
votes
1
answer
71
views
How relevant is the electric charge of quarks within hadrons?
Given that each quark flavor has a particular electric charge (i.e., either +2/3 or -1/3): how do these charges effect the internal dynamics of hadrons? Do the attractive and repulsive effects of ...
- 307
-1
votes
1
answer
156
views
Why is the electromagnetic force not an emergent property of the strong force? [closed]
Two up quarks in a proton lead to an imbalance, which results in the proton having the ability to attract electrons. Two down quarks in a neutron lead to balance in the electromagnetic force, leading ...
- 29
0
votes
2
answers
247
views
Are gluon particles analogous to flux tubes?
I've always been told gluons are the force "particles" mediating the strong force. And I've learned that Fluxtubes are what hold quarks together. Are these fluxtubes the "particle" ...
- 125
2
votes
1
answer
169
views
Does pionium decay in massless QCD?
The bound state of ${\pi}^+ {\pi}^-$ is called Pionium.
Is Pionium an Electromagnetic bound state or a Strong Force one? then Why?
Does such a bound state last forever if one works in QCD with ...
- 1,268
14
votes
4
answers
2k
views
How does the strong force increase in attraction as particles move farther away?
I have heard that the strong force can be imagined similar to a rubber band, where the farther you extend the ends, the harder they pull themselves back together. My question is how? From what it ...
- 451
2
votes
1
answer
696
views
How do gluons bind the quarks together within the hadrons and mesons?
I was trying to know about the strong nuclear force within the nucleus and the books and websites told me that it is the gluons which carry the force, and now I am curious how the gluons carry this ...
3
votes
1
answer
320
views
Why is color change between quarks without consequence?
As always I will preface this question with the fact that I only have a high school education, so I may be overlooking something, or unaware of something that is inherent to the question.
That being ...
- 481
1
vote
1
answer
69
views
Asymptotic freedom and momentum exchange
Why is the momentum exchange very high for low distances?
For sufficiently short distances or large exchanges of momentum
https://en.wikipedia.org/wiki/Asymptotic_freedom
While I think about ...
- 1,507
0
votes
1
answer
475
views
Why don't green and anti-green gluons immediately annihilate each other?
I can't believe I haven't found an answer elsewhere.....
I have read repeatedly about blue/anti-blue gluons, etc., but no reason as to why they don't destroy each other immediately.....
Or maybe they ...
- 4,509
1
vote
1
answer
232
views
Why does literature list the strong coupling at the scale of the Z-boson's mass?
In the 2004 edition of the book "QCD as a Theory of Hadrons" by S. Narison, the author provides a value for the strong coupling at a scale of the mass of the Z boson,
$$ \alpha_s (M_Z) = 0.1181 \pm ...
- 2,648
5
votes
2
answers
324
views
Why and how does the term $\frac{\theta}{32\pi^2}F_{\mu\nu a}\tilde{F}^{\mu\nu a}$ induce electric dipole moment of the neutron?
It is well-known that the operator $$\delta \mathcal{L}_{QCD}=\frac{\theta}{32\pi^2}F_{\mu\nu a}\tilde{F}^{\mu\nu a}$$ violates CP, it can contribute to the neutron electric dipole moment, $d_n$. For ...
- 26.8k
-2
votes
2
answers
396
views
Why is the strong interaction blind to the third component of Isospin?
Neutron and the proton have different values of $I_3$, the third component of the Isospin. Yet the strong interaction cannot distinguish between them. Why is this so? I can't understand this.
The ...
- 11.8k
1
vote
2
answers
267
views
Why are gluons & the strong force necessary to keep proton together?
This is something that's puzzled me for a while. Say you have a proton with quarks uud, with the u quarks having +2/3 charge and the d quark -1/3. Doesn't this make quite a neat fit for keeping the ...
- 1,552
2
votes
3
answers
3k
views
Why can't leptons interact with the strong nuclear force?
So if I understand correctly the strong nuclear force is mediated in the following way:
Around nucleons, there exists a potential probability cloud of pions that can be fired by the nucleons. For two ...
- 87
4
votes
2
answers
823
views
Pion-Meson production during nuclear force
I was learning about quantum chromodynamics and how the force that holds particles in the nucleus works. I learned a pion-meson is created during gluon interaction within the particle and that meson ...
- 443