Two- and three-gluon glueballs of $C=+$

Abstract

We study two- and three-gluon glueballs of $C=+$ using the method of QCD sum rules. We systematically construct their interpolating currents, and find that all the spin-1 currents of $C=+$ vanish. This suggests that the ``ground-state'' spin-1 glueballs of $C=+$ do not exist within the relativistic framework. We calculate masses of the two-gluon glueballs with $J^{PC}=0^{\pm +}/2^{\pm +}$ and the three-gluon glueballs with $J^{PC}=0^{\pm +}/2^{\pm +}$. We propose to search for the $J^{PC}=0^{-+}/2^{-\pm }/3^{\pm -}$ three-gluon glueballs in their three-meson decay channels in future BESIII, GlueX, LHC, and PANDA experiments.

10 pages, 4 figures, 2 tables, revised version to be published in PRD. arXiv admin note: text overlap with arXiv:2103.17201

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