http://www.facebook.com/ScienceReason ... The Standard Model of Particle Physics (Chapter 3): Up and Down Quarks
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STANDARD MODEL OF PARTICLE PHYSICS:
1) First Second Of The Universe:
2) Force And Matter:
5) Electrons, Protons And Neutrons:
6) Photons, Gravitons & Weak Bosons:
8) The Higgs Boson / The Higgs Mechanism:
The Standard Model of particle physics is a theory of three of the four known fundamental interactions and the elementary particles that take part in these interactions. These particles make up all visible matter in the universe.
Every high energy physics experiment carried out since the mid-20th century has eventually yielded findings consistent with the Standard Model.
Still, the Standard Model falls short of being a complete theory of fundamental interactions because it does not include gravitation, dark matter, or dark energy. It is not quite a complete description of leptons either, because it does not describe nonzero neutrino masses, although simple natural extensions do.
The particle itself is a fundamental particle and is too small to be seen by any imaginable instrument of observation. So we instead represent the properties that allow the up quark to interact.
The central small dot represents the weak charge of the up quark. This charge entirely separate from electric charge gives ri