1.16637*10^-5 (GeV)^-2 in (Joules)^-2Fermi's Constant (GF) is a fundamental physical constant that is used in quantum mechanics to describe the strength of the weak nuclear force. It represents the coupling constant between two particles that interact through the weak force.
The value of Fermi's Constant (GF) in SI units is approximately 1.166 x 10^-5 GeV^-2, or 1.166 x 10^-11 m^2 kg^-1 s^-2. This is a very small number, reflecting the extremely weak strength of the weak nuclear force.
Fermi's Constant (GF) was originally determined by Italian physicist Enrico Fermi in the 1930s through his work on beta decay. He observed that the rate of beta decay could be described by a mathematical formula that included GF as a constant. Later, with more precise measurements, the value of GF was refined.
Fermi's Constant (GF) is used in many calculations in modern physics, particularly in the field of particle physics. It is used to calculate the strength of the weak force and to predict the rate at which certain particle interactions will occur, such as beta decay or neutrino interactions.
No, the value of Fermi's Constant (GF) is considered to be a fundamental constant of nature and is not expected to change. However, as our understanding of physics evolves, the way in which GF is used in calculations may change, leading to more precise measurements of its value.