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Casimir scaling, glueballs, and hybrid gluelumps

  • Hadron Physics
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Abstract.

Assuming that the Casimir scaling hypothesis is well verified in QCD, masses of glueballs and hybrid gluelumps (gluon attached to a point-like c¯ pair) are computed within the framework of 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¯ 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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Authors and Affiliations

  1. Groupe de Physique Nucléaire Théorique, Université de Mons-Hainaut, Académie universitaire Wallonie-Bruxelles, Place du Parc 20, BE-7000, Mons, Belgium

    V. Mathieu & C. Semay

  2. CWI, P.O. Box 94079, 1090, Amsterdam, The Netherlands

    F. Brau

Authors
  1. V. Mathieu
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  2. C. Semay
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  3. F. Brau
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Correspondence to C. Semay.

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V. Vento

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Mathieu, V., Semay, C. & Brau, F. Casimir scaling, glueballs, and hybrid gluelumps. Eur. Phys. J. A 27, 225–230 (2006). https://doi.org/10.1140/epja/i2005-10251-7

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  • DOI: https://doi.org/10.1140/epja/i2005-10251-7

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