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taylordnz
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photons and gluons have the same mass, charge, width and GeV?
so what tells them apart?
so what tells them apart?
Originally posted by quartodeciman
But, two photons in the gamma range of frequencies, having sufficient total energy and getting close to each other near a massive nucleus, change into an electron and a positron. The sufficiency of total energy means enough total energy to produce the total energy of the two charged particles. Any excess energy becomes the total kinetic energy of the particles. This happens in nuclear experiments all the time. In a bubble-chamber photograph, in the vicinity of a magnetic field, this pair shows up as a pair of back-to-back spirals coming from the point where the charged particles were produced.
This reaction is evidently done by the electromagnetic force. The production of electron-positron pairs figures into quantum electrodynamic calculations. In this case, the two particles don't separate, but just turn right back into gamma ray photons again. [/B]
Originally posted by 1100f
On the contrary, for gluons, you have vertices containing only gluons (3 or 4). So we see that gluons have a direct interractions among them.
Except in the far, far distant future, where electrons and positrons are all that's left (all black holes have evaporated, all protons have decayed), and they orbit each other at a distance of approx 15 billion light-yearsOriginally posted by mormonator_rm
Correct. A very, very short period of time.
Tarrach's book on practical QCD surely has some.Originally posted by quartodeciman
Would that be glueball interactions, for example? It is hard to find Feynman diagrams for gluon-gluon interactions outside of (maybe) some hairy research reports.
Originally posted by quartodeciman
It is hard to find Feynman diagrams for gluon-gluon interactions outside of (maybe) some hairy research reports.
Originally posted by quartodeciman
It is hard to find Feynman diagrams for gluon-gluon interactions outside of (maybe) some hairy research reports.
Photons and gluons are fundamental particles that make up the building blocks of matter and energy in the universe. Photons are particles of light and carry electromagnetic force, while gluons are particles that carry the strong nuclear force.
Photons interact with matter through electromagnetic force, which is responsible for all electromagnetic interactions such as light, electricity, and magnetism. Gluons, on the other hand, interact with quarks, which make up protons and neutrons, through the strong nuclear force, which holds the nucleus of an atom together.
According to the law of conservation of energy, photons and gluons cannot be created or destroyed. They can only be converted into other forms of energy, such as heat or motion.
Photons and gluons are both considered to be gauge bosons, which are particles that carry fundamental forces. While photons carry electromagnetic force, gluons carry the strong nuclear force. Additionally, gluons can also interact with each other, unlike photons.
Photons and gluons are essential in understanding the fundamental forces and interactions that govern the behavior of particles in the universe. They also play a crucial role in theories such as quantum electrodynamics and quantum chromodynamics, which explain the behavior of particles at the subatomic level.