##e^-e^+\to \gamma\gamma##mfb said:Every process where charged particles appear or disappear is charged-current.
Yes, I know what you mean. My point is that someone who is not a particle physicist might not.mfb said:... you know what I mean.
Weak processes only of course, and pair production/annihilation does not count.
Beta decay is a type of radioactive decay process in which an unstable atomic nucleus emits a beta particle (either an electron or a positron) in order to become more stable.
The weak charge-current process in beta decay is the mechanism by which the decay occurs. It involves the conversion of a down quark into an up quark, or vice versa, within the nucleus. This conversion results in the emission of a beta particle and a corresponding change in the charge of the nucleus.
Beta decay is considered a weak process because it is mediated by the weak nuclear force, which is one of the four fundamental forces of nature. This force is significantly weaker than the other forces, such as the strong nuclear force, which holds the nucleus together.
Beta decay is different from other types of radioactive decay, such as alpha decay and gamma decay, because it involves a change in the type of particle emitted from the nucleus. In alpha decay, an alpha particle (two protons and two neutrons) is emitted, while in gamma decay, a high-energy photon is emitted.
The study of beta decay and the weak charge-current process has many practical applications, including nuclear energy production, medical imaging and treatment, and dating artifacts in archaeology. Understanding these processes also helps us to better understand the fundamental workings of the universe.