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In File:Pn scatter quarks.png, shouldn't the central pion be color neutral? By working out the gluon colors, it seems that the central pion is made up of two blue quarks, whereas, for the pion to be color neutral, it has to be a blue-antiblue pair.
Note:I have never studied this subject, but just read it as a curiosity, so I might be missing some principles here.
Here is my interpretation of the diagram (top-down). From the proton, a blue up quark releases a blue-antired gluon (i'll represent as br*), and turns red. The br* hits the red down quark of the proton, and becomes blue. (Color A of the pion) Now, this blue quark emits a blue-antigreen gluon (bg*), and becomes green. The bg* is absorbed by a green up quark in the neutron, which becomes blue.
Now, from the neutron (happening simultaneously with the above): The blue down emits a br* gluon,and becomes red. This gluon hits the red down, which becomes blue. (Color B of the pion) The now blue quark emits a bg* gluon and becomes green. The bg* is absorbed by the green up in the neutron, which turns blue.
Everywhere in this exchange, charge is conserved. All particles are color-neutral, except for the pion formed in the exchange. Mesons are always made up of a pair of quarks with opposite colors (red-antired, etc.). But, this pion is made up of two blues. Could someone tell me why?
Also, could someone tell me if any quark changes into another during this reaction? The pion also has to be made up of a quark-antiquark pair, but (without changing a quark into another), it seems to be a down-down quark.
Thanks, ManishEarth Talk • Stalk 10:40, 8 July 2010 (UTC)
So which particle is matter and which antimatter in the pion? In these diagrams the particles are "matter" if they are moving in time in the direction of their arrows. So in this pion, if the pion is going upward, the line represented by the blue upward arrow is the "particle" (the blue down quark) and the one forced to go the opposite way to the pion flight and thus opposite to its arrow, is the "antiparticle" (the antiblue antidown quark). BUT since you can picture the pion going in either direction (from proton to neutron or from neutron to proton) your choice of which of these is the quark and which the antiquark (the left one or the right one) is dependent on which direction you pick for the pion to move as a whole. It works out the same either way, which I suppose is why it's not shown one way or the other in the diagram. In the diagram you can see that an up quark gets changed to a down, and a down to an up, in each nucleon. The net result is no change in each particle. For charged pion interactions, a down is changed to an up in one particle and vice versa in the other, and neutron changes to proton and vice versa, in the interaction. Each of the 3 pions (+, -, or uncharged) come in blue-antiblue, red-antired, or green-antigreen varieties. We see only one of them here. S B H arris 02:01, 9 July 2010 (UTC)
Thanks, ManishEarth Talk • Stalk 04:41, 9 July 2010 (UTC)
Could you also answer this question? When a body experiences increase in mass because of its speed, is the increase in mass due to particles being created by the energy, or is it just increase in apparent mass? In other words, if you accelerated a particle to near lightspeed, would smaller particles appear to accompany it, or would it just seem to be more massive. I tend to believe the second possibility, because the new particles (from the first one) would have to exist when seen from certain reference frames only. Thanks, ManishEarth Talk • Stalk 05:02, 9 July 2010 (UTC)
The term strong nuclear force has been historically the common name for this topic, but does not currently even get a mention in the article lead, despite the term redirecting to this article.
This is just plain ridiculous IMO. Interested in other views. Andrewa ( talk) 07:02, 26 December 2020 (UTC)
In nuclear physics, the fm unit is the Fermi. Conveniently fm sounds like Fermi, and also comes out femtometer. (Or femtometre, depending on where you are.) I suspect also in high energy physics. Gah4 ( talk) 07:01, 22 December 2023 (UTC)
Quarks are likely to be separated by far smaller distances than a neutron diameter. Because they move 0.8 C and higher the Electromagnetic field intensity will have an intensity pulse in the direction of motion each time a quark cycles past. Let the quarks cycle in a roughly fixed pattern of two like quarks separated by the opposite sign quark with one like quark leading and one trailing. The magnetic field intensity wakes they will produce will cause magnetic curving forces that are balanced with one of the other quarks causing a curving force and the remaining causing a straightening force, true for each of the three quarks. Speed of light causes an additional barrier stabilizing the structure. Does this type of thinking open the door to electromagnetic forces being involved in quark attraction?
Also note that while a trio of quarks in a second proton sits inside the intensity wake of a first proton. The repulsion from highest intensity is towards the other proton. This would explain why at particular short distance the electromagnetic force is strong and attractive. Does this kind of thinking suggest a way that relativistic electromagnetic field forces could hold two protons together?
On a distantly related note when two wires attract an alternate theory is that the electrons seek the less dense fields behind other electrons. (To me this is far more likely than the favored theory of more dense packed protons due to relativistic shortening.) Bill field pulse ( talk) 20:27, 20 January 2024 (UTC)
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In File:Pn scatter quarks.png, shouldn't the central pion be color neutral? By working out the gluon colors, it seems that the central pion is made up of two blue quarks, whereas, for the pion to be color neutral, it has to be a blue-antiblue pair.
Note:I have never studied this subject, but just read it as a curiosity, so I might be missing some principles here.
Here is my interpretation of the diagram (top-down). From the proton, a blue up quark releases a blue-antired gluon (i'll represent as br*), and turns red. The br* hits the red down quark of the proton, and becomes blue. (Color A of the pion) Now, this blue quark emits a blue-antigreen gluon (bg*), and becomes green. The bg* is absorbed by a green up quark in the neutron, which becomes blue.
Now, from the neutron (happening simultaneously with the above): The blue down emits a br* gluon,and becomes red. This gluon hits the red down, which becomes blue. (Color B of the pion) The now blue quark emits a bg* gluon and becomes green. The bg* is absorbed by the green up in the neutron, which turns blue.
Everywhere in this exchange, charge is conserved. All particles are color-neutral, except for the pion formed in the exchange. Mesons are always made up of a pair of quarks with opposite colors (red-antired, etc.). But, this pion is made up of two blues. Could someone tell me why?
Also, could someone tell me if any quark changes into another during this reaction? The pion also has to be made up of a quark-antiquark pair, but (without changing a quark into another), it seems to be a down-down quark.
Thanks, ManishEarth Talk • Stalk 10:40, 8 July 2010 (UTC)
So which particle is matter and which antimatter in the pion? In these diagrams the particles are "matter" if they are moving in time in the direction of their arrows. So in this pion, if the pion is going upward, the line represented by the blue upward arrow is the "particle" (the blue down quark) and the one forced to go the opposite way to the pion flight and thus opposite to its arrow, is the "antiparticle" (the antiblue antidown quark). BUT since you can picture the pion going in either direction (from proton to neutron or from neutron to proton) your choice of which of these is the quark and which the antiquark (the left one or the right one) is dependent on which direction you pick for the pion to move as a whole. It works out the same either way, which I suppose is why it's not shown one way or the other in the diagram. In the diagram you can see that an up quark gets changed to a down, and a down to an up, in each nucleon. The net result is no change in each particle. For charged pion interactions, a down is changed to an up in one particle and vice versa in the other, and neutron changes to proton and vice versa, in the interaction. Each of the 3 pions (+, -, or uncharged) come in blue-antiblue, red-antired, or green-antigreen varieties. We see only one of them here. S B H arris 02:01, 9 July 2010 (UTC)
Thanks, ManishEarth Talk • Stalk 04:41, 9 July 2010 (UTC)
Could you also answer this question? When a body experiences increase in mass because of its speed, is the increase in mass due to particles being created by the energy, or is it just increase in apparent mass? In other words, if you accelerated a particle to near lightspeed, would smaller particles appear to accompany it, or would it just seem to be more massive. I tend to believe the second possibility, because the new particles (from the first one) would have to exist when seen from certain reference frames only. Thanks, ManishEarth Talk • Stalk 05:02, 9 July 2010 (UTC)
The term strong nuclear force has been historically the common name for this topic, but does not currently even get a mention in the article lead, despite the term redirecting to this article.
This is just plain ridiculous IMO. Interested in other views. Andrewa ( talk) 07:02, 26 December 2020 (UTC)
In nuclear physics, the fm unit is the Fermi. Conveniently fm sounds like Fermi, and also comes out femtometer. (Or femtometre, depending on where you are.) I suspect also in high energy physics. Gah4 ( talk) 07:01, 22 December 2023 (UTC)
Quarks are likely to be separated by far smaller distances than a neutron diameter. Because they move 0.8 C and higher the Electromagnetic field intensity will have an intensity pulse in the direction of motion each time a quark cycles past. Let the quarks cycle in a roughly fixed pattern of two like quarks separated by the opposite sign quark with one like quark leading and one trailing. The magnetic field intensity wakes they will produce will cause magnetic curving forces that are balanced with one of the other quarks causing a curving force and the remaining causing a straightening force, true for each of the three quarks. Speed of light causes an additional barrier stabilizing the structure. Does this type of thinking open the door to electromagnetic forces being involved in quark attraction?
Also note that while a trio of quarks in a second proton sits inside the intensity wake of a first proton. The repulsion from highest intensity is towards the other proton. This would explain why at particular short distance the electromagnetic force is strong and attractive. Does this kind of thinking suggest a way that relativistic electromagnetic field forces could hold two protons together?
On a distantly related note when two wires attract an alternate theory is that the electrons seek the less dense fields behind other electrons. (To me this is far more likely than the favored theory of more dense packed protons due to relativistic shortening.) Bill field pulse ( talk) 20:27, 20 January 2024 (UTC)