Quarks: Difference between revisions
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All quarks have a corresponding antiparticle, called an antiquark. | All quarks have a corresponding antiparticle, called an antiquark. | ||
Quarks possess various properties, including having masses, charges, spins and | Quarks possess various properties, including having masses, charges, spins and under both strong and weak interactions<ref>http://hyperphysics.phy-astr.gsu.edu/hbase/Particles/quark.html</ref>. | ||
=== Properties | === Properties === | ||
==== Charges ==== | |||
Quarks have fractional charges, -1/3 or 2/3, depending on the type. Down, strange and bottom type quarks have -1/3e charges, making them down-type quarks, whereas up, top and charm quarks have 2/3e charges, making them up-type quarks. Baryons (qqq) or mesons (qq<sup>-</sup>), are composed | Quarks have fractional charges, -1/3 or 2/3, depending on the type. Down, strange and bottom type quarks have -1/3e charges, making them down-type quarks, whereas up, top and charm quarks have 2/3e charges, making them up-type quarks. Baryons (qqq) or mesons (qq<sup>-</sup>), are composed so that each combination of quarks in a baryon form a integer, but combinations of quarks in mesons leads to integer charges. Baryons can be made with many combinations of different quarks, whereas mesons are made of a particular quark and it's constituent antiquark. Antibaryons can also be formed, using three antiquarks<ref name="Quarks basics">http://hyperphysics.phy-astr.gsu.edu/hbase/Particles/quark.html</ref><ref>https://www.scientificamerican.com/article/the-inner-life-of-quarks-extreme-physics-special/</ref>. | ||
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Revision as of 08:39, 5 December 2017
Quarks are fundamental particles which have never been identified in isolation, and are only found as hadrons, held together by the strong force.
There are 6 types of quark: up, down, strange, charm, top, and bottom.
All quarks have a corresponding antiparticle, called an antiquark.
Quarks possess various properties, including having masses, charges, spins and under both strong and weak interactions[1].
Properties
Charges
Quarks have fractional charges, -1/3 or 2/3, depending on the type. Down, strange and bottom type quarks have -1/3e charges, making them down-type quarks, whereas up, top and charm quarks have 2/3e charges, making them up-type quarks. Baryons (qqq) or mesons (qq-), are composed so that each combination of quarks in a baryon form a integer, but combinations of quarks in mesons leads to integer charges. Baryons can be made with many combinations of different quarks, whereas mesons are made of a particular quark and it's constituent antiquark. Antibaryons can also be formed, using three antiquarks[2][3].