Question for specialist: are gluons really massless?
Following http://hyperphysics.phy-astr.gsu.edu/hbase/particles/expar, this is not true.
Also, from my (poor) understanding, it is not simply that gluons "bind" the quarks together;
they are themselves, sort of, composed of a quarks pair. -- looxix 10:16 Apr 14, 2003 (UTC)
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