ASTRON 2B03 Lecture Notes - Higgs Boson, Higgs Mechanism, Big Bang
25 Sep 2013
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Friday content not on the final exam. This goes back all the way to the greeks. If a particle is truly elementary, it cant be subdivided: no inner structure. Standard model fundamental particles are quarks and leptons. Baryonic everything made up of protons and neutrons normal stuff. Not made up of protons and neutrons. 4 force carriers have to do w/ 4 forces. Describing the 4 forces w/ force carriers: 60s, 70s feynman describing force in a new way, photons are the force carriers of electromagnetic force, weak force - has a couple different force carriers. Things which have only been detected in high energy particle accelerators: strong force - force carrier is gluons (like elastic bands, gravity graviton (unobserved) Grand unified theories of physics combine 3 forces. Some possible, but no theory has been tested and is confirmed. As we go earlier and earlier in the universe (1 second old) forces merged together.
