Hadron

From Citizendium
Revision as of 15:46, 20 August 2011 by imported>John R. Brews (another source and some more detail)
Jump to navigation Jump to search

A hadron (pronounced hay-dron, and based upon the Greek hadr=strong) is a composite particle subject to the strong nuclear force (and possibly to weak and electromagnetic forces too), such as a meson (a quark and an antiquark paired in various ways), proton (two up quarks and one down quark), or a neutron (two down quarks and one up quark).[1][2] In general, hadrons are particles made up of quarks, antiquarks, and gluons. They are described by quantum chromodynamics.[3]

References

  1. Don Lincoln (2004). Understanding the universe: from quarks to the cosmos. World Scientific, p. 115. ISBN 9812387056. 
  2. Helen R. Quinn, Yossi Nir (2010). The Mystery of the Missing Antimatter. Princeton University Press, p. 249. ISBN 1400835712. 
  3. Leonard Susskind (2005). The cosmic landscape: string theory and the illusion of intelligent design. Hachette Digital, Inc., p. 159. ISBN 0316155799.