Linked Questions
12 questions linked to/from How has quark electric charge been directly measured?
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Do we actually know the charges of quarks? [duplicate]
It is well known that quarks have a charge of either 2/3e or -1/3e depending on quark. What is the evidence behind that?
Did someone simply write $q_u+q_u+q_d=q_{proton}=1e$ and $q_u+q_d+q_d=q_{...
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What experiment(s) have or can refute the existence of an electron-particle "system" over the separate existence of a neutron within itself?
This question actually came about from a discussion of another question posed here
The neutron is known to be comprised of an electron and a proton, and there are observations that the neutron can be ...
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Anti-neutrons, anti-quarks, isospin: What is observed and what is derived?
I would be a little more restrained with the existence of antineutrons. First at all - if I understood right - the existence of antiquarks is hypothetical. If one not agree with this please refer to ...
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What evidence is there of the existence of quarks?
What is the experimental evidence that suggests the existence of quarks? How were they discovered? I'm going to assume a particle collider is involved, as it tends to be the case with most subatomic ...
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Fractionally charged Quarks
Just wondering what the evidence is for fractionally charged quarks, is it simply enough to say that as we see deep inelastic scattering of electrons (at high energies) off the nucleus of an atom (...
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For a centre-of-mass energy of $3\,\mathrm{GeV}$ is it possible to make a charm quark?
This is not strictly a homework question (but I have added the tag anyway). I am using an answer from a given question which states you cannot make a charm quark if given a centre-of-mass energy $3\,\...
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Experimental evidence for 3 generations of quark?
I know that looking at the invisible decay width of the $Z$-boson at the LEP collider at CERN leads to the evidence of the existence of three (light) lepton generations but I can't find any ...
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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 ...
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Is quark electric charge also confined?
Since we will (maybe) never observe free quarks which has fraction charge, is it logically correct to say that the fraction (1/2,2/3 etc) electric charge is also confined. I.e. the charges that we do ...
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What are direct experimental evidences that quarks exist? [duplicate]
Now we have very established model of quarks explaining fundamental strong interaction. What are experimental proofs for existence of quarks and what is the name of physicist which made them?
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A few questions on quarks, gluons and the strong force
I wanted to answer for myself some pretty fundamental questions pertaining to the strong interaction, color charge and quarks, but I'm sort of stumbling on a few. So I wanted to find the reason/...
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Facts About Quarks Electric Charge [duplicate]
Quarks have the unusual characteristic of having a fractional electric charge.
here there is a new model that suggests maybe an up Quark has no electric charge and infact down Quark has electric ...
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