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Quarks and Leptons PDF Print E-mail
Tuesday, 24 November 2009 02:09

After GUT matter forms, the next phase is for GUT matter to decay into lepton and quark matter. Lepton matter will become our oldfriends the electron and neutrino (and their anti-particles). But quark matter is unusual because of the property of quark confinement.

Quarks can never be found in isolation because the strong force becomes stronger with distance. Any attempt to separate pairs or triplets of quarks requires large amounts of energy, which are used to produce new groups of quarks.

  • quark and anti-quark pairs (mesons) are produced in large numbers which will latter merge to form triplets (baryons)
 With so much energy available in the early Universe, the endresult is a runaway production of quark and anti-quark pairs. Trillions of times the amounts we currently see in the Universe. The resulting soup of quark pairs will eventually suffer massive annihilation of its matter and anti-matter sides as soon as the Universe expands and cools sufficiently for quark production to stop.

Notice that quark pairs are more stable than triplets, so that most of the quark production is done in pairs. Later, pairs will interact to form triplets, which are called baryons.

 


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