Weak charge
Type of weak interaction in nuclear and atomic physics / From Wikipedia, the free encyclopedia
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Not to be confused with weak hypercharge or weak isospin.
In nuclear physics and atomic physics, weak charge refers to the Standard Model weak interaction coupling of a particle to the Z boson. For example, for any given nuclear isotope, the total weak charge is approximately −0.99 per neutron, and +0.07 per proton.[1] It also shows an effect of parity violation during electron scattering.
- This same term is sometimes also used to refer to other, different quantities, such as weak isospin,[2] weak hypercharge, or the vector coupling of a fermion to the Z boson (i.e. the coupling strength of weak neutral currents).[3]