To what extent is Gluon Confinement an empirical fact?

Details To what extent is Gluon Confinement an empirical fact? To what extent is Gluon Confinement an empirical fact?

2011-06-13

arxiv.org/abs/1106.2462v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 9 figures

Scientific paper

Experimental verifications of Confinement in hadron physics have established the absence of charges with a fraction of the electron's charge by studying the energy deposited in ionization tracks at high energies, and performing Millikan experiments with charged droplets at rest. These experiments test only the absence of particles with fractional charge in the asymptotic spectrum, and thus "Quark" Confinement. However what theory suggests is that Color is confined, that is, all asymptotic particles are color singlets. Since QCD is a non-Abelian theory, the gluon force carriers (indirectly revealed in hadron jets) are colored. We empirically examine what can be said about Gluon Confinement based on the lack of detection of appropriate events, establishing an upper bound for high-energy free-gluon production.

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