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evilcman
- 41
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I can't find the value of the Yukawa coupling g, for neutron-proton scattering for example, where the Yukawa potential reads - g^2 exp(-m*r) / r. Can some1 tell me at least an approximate value?
The Yukawa coupling g is a dimensionless constant used in theoretical physics to describe the strength of the interaction between particles. It is a fundamental parameter in the theory of the strong nuclear force, which governs the interactions between protons and neutrons in the nucleus of an atom.
The value of g is directly related to the scattering cross section for neutron-proton interactions. This means that the larger the value of g, the more likely a neutron is to interact with a proton when they come into close proximity.
The value of g is estimated through a combination of experimental measurements and theoretical calculations. Experimentalists use particle accelerators to collide protons and neutrons at different energies and measure the resulting scattering patterns. Theoretical physicists then use these measurements to refine their models and estimate the value of g.
The current accepted value of g for neutron-proton scattering is approximately 1.0. However, this value is subject to ongoing research and refinement, as scientists continue to improve their understanding of the strong nuclear force and its interactions.
The value of g is a crucial parameter in our understanding of the universe, as it helps to explain the stability of matter and the structure of atomic nuclei. It is also used in cosmology to study the formation of stars and galaxies, and in high-energy physics to explore the fundamental forces and particles that make up the universe.