Leptons are composed of two types of particles. They are...
Lightest to Heaviest
Charge
Leptons
Quarks
Quarks are split into two categories as well. They are.....
Electromagnetic Force
Deals with the interactions between charged particles. What are particles called that are composed of quarks called?
Bosons
Photon
Gravitational Force
Deals with interactions between things with mass
Graviton And the two subcategories are?
Weak Force
Deals with interactions between everything
Zo, W+, W­
Strong Force
Deals with interactions inside a nucleus. Gluon, g
The way particles interact is through emission and absorption of other particles called Bosons
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Visualization using Feynman Diagrams
Gamma particles (no charge, no mass) can be used to 'bounce' charged particles away from each other e+ + e­ ­> e+ + e­
or is part of pair production/annihilation. Weak Bosons Zo (no charge, has mass) is very much like the gamma particle except it can also interact with neutrinos (particles without charge) ­
­
e+ e
e + e
W+ and W­ (have charges +1 and ­1 respectively) are much more interesting because they are what is responsible for particles changing. ­
e + e
+
e+ e
Gravitons don't really come into play for subatomic particles, so we don't really worry about them. Gluon interactions are very complicated due to the fact that gluons can interact with other gluons and can spontaneously create quark­
antiquark pairs. 2
p 745
# 87­89, 91, 94,98,99
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