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Does the QCD plasma contain propagating gluons?

Saumen Datta·Sourendu Gupta
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Abstract

Comparison of two appropriately chosen screening masses of colour singlet operators in the pure glue QCD plasma indicates that at sufficiently high temperature it contains a weakly-interacting massive quasi-particle with the quantum numbers of the electric gluon. Still in the deconfined phase, but closer to T_c, the same mass ratio is similar to that at zero temperature, indicating that the propagating modes are more glueball-like, albeit with a lower scale for the masses. We observe a continuity between these two regimes.

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Saumen Datta, Sourendu Gupta. 2002-08-01. Does the QCD plasma contain propagating gluons?. https://doi.org/10.1103/physrevd.67.054503

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