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arXiv · hep-ph/0511210

Casimir scaling, glueballs and hybrid gluelumps

Vincent Mathieu·Claude Semay·Fabian Brau
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Abstract

Assuming that the Casimir scaling hypothesis is well verified in QCD, masses of glueballs and hybrid gluelumps (gluon with a point-like $c\bar c$ pair) are computed within the rotating string formalism. In our model, two gluons are attached by an adjoint string in a glueball while the gluon and the colour octet $c\bar c$ pair are attached by two fundamental strings in a hybrid gluelump. Masses for such exotic hadrons are computed with very few free parameters. These predictions can serve as a guide for experimental searches. In particular, the ground state glueballs lie on a Regge trajectory and the lightest $2^{++}$ state has a mass compatible with some experimental candidates.

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Vincent Mathieu, Claude Semay, Fabian Brau. 2005-11-17. Casimir scaling, glueballs and hybrid gluelumps. https://doi.org/10.1140/epja%2Fi2005-10251-7

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