We perform a precision computation of hybrid static potentials with quantum numbers ΛThe resulting potentials are used to estimate masses of heavycc andbb hybrid mesons in the Born-Oppenheimer approximation. Part of the lattice gauge theory computation, which we discuss in detail, is an extensive optimization of hybrid static potential creation operators. The resulting optimized operators are expected to be essential for future projects concerning the computation of 3-point functions as e.g. needed to study spin corrections, decays or the gluon distribution of heavy hybrid mesons.

We study the phenomenology of two nonets of excited vector mesons, {ρ

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We compute chromoelectric and chromomagnetic flux densities for hybrid static potentials in SU(2) and SU(3) lattice gauge theory. In addition to the ordinary static potential with quantum numbers Λ η = Σ + g , we present numerical results for seven hybrid static potentials corresponding to Λwhere the flux densities of five of them are studied for the first time in this work. We observe hybrid static potential flux tubes, which are significantly different from that of the ordinary static potential. They are reminiscent of vibrating strings, with localized peaks in the flux densities that can be interpreted as valence gluons. arXiv:1907.01482v2 [hep-lat]

We report about an ongoing lattice field theory project concerned with the investigation of heavy hybrid mesons. In particular we discuss our computation of the structure of hybrid static potential flux tubes in SU(2) lattice Yang-Mills theory, which is based on the squares of the chromoelectric and chromomagnetic field strength components. Our flux tube results for hybrid static potential quantum numbers Σ − g , Σ + u , Σ − u , Π g , Π u , ∆ g , ∆ u are significantly different compared to the flux tube of the ordinary static potential.