English

Precision computation of hybrid static potentials in SU(3) lattice gauge theory

High Energy Physics - Lattice 2019-02-20 v3 High Energy Physics - Phenomenology

Abstract

We perform a precision computation of hybrid static potentials with quantum numbers Ληϵ=Σg,Σu+,Σu,Πg,Πu,Δg,Δu\Lambda_\eta^\epsilon = \Sigma_g^-,\Sigma_u^+,\Sigma_u^-,\Pi_g,\Pi_u,\Delta_g,\Delta_u using SU(3) lattice gauge theory. The resulting potentials are used to estimate masses of heavy cˉc\bar{c} c and bˉb\bar{b} b 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.

Keywords

Cite

@article{arxiv.1811.11046,
  title  = {Precision computation of hybrid static potentials in SU(3) lattice gauge theory},
  author = {Stefano Capitani and Owe Philipsen and Christian Reisinger and Carolin Riehl and Marc Wagner},
  journal= {arXiv preprint arXiv:1811.11046},
  year   = {2019}
}

Comments

41 pages, 10 figures, 9 tables, corrected a typo, corrected spelling, reorganized introduction, added minor clarifications in sections 2.1, 3, 4.1, 4.3 and 5, corrected formulas in tables 1-7 ($S = \dots \rightarrow USU = \dots$)