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Weak Charge Of The Proton Measured For The First Time

Article by Dr. Amira Val Baker, Astrophysicist, Resonance Science Foundation Research Scientist

Charge – that is the degree to which an entity is affected by an external force – comes in all shapes in sizes. Now for the first-time scientists have been able to determine the weak charge of the proton.

The weak force is one of the four fundamental forces of nature and is significant in radioactivity – the spontaneous emission of energy and/or subatomic particles i.e. an unstable nucleus will decompose spontaneously (decay) into a more stable configuration. Note, this is done by emitting specific particles and/or specific amounts/forms of energy. For example, radioactive beta decay transforms a neutron into a proton, an electron, and an electron anti-neutrino.

The standard model describes these forces in terms of the exchange of virtual force carriers. In this model the weak force is thought to interact thorough the exchange of the massive (~ 100 x mass of a proton)...

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