The 43rd International Symposium on Lattice Field Theory (Lattice 2026)

Hybrid spin-dependent and hybrid–quarkonium mixing potentials at large quark–antiquark separations from lattice gauge theory

29 Jul 2026, 11:50

20m

Margaret Brent B (Adele H. Stamp Student Union)

Contributed talk Hadronic and nuclear spectrum and interactions Hadronic and nuclear spectrum and interactions

Speaker

Vilija de Jonge (Institut für theoretische Physik an der Goethe Universität Frankfurt am Main)

Description

We present $\text{SU}(3)$ lattice gauge theory results for the $\mathcal{O}(1/m_Q)$ hybrid spin-dependent and hybrid–quarkonium mixing potentials. The only existing lattice computation of these potentials was exploratory and limited to quark–antiquark separations below approximately $0.5\,\mathrm{fm}$. We extend the lattice determination beyond $1\,\mathrm{fm}$ using large-volume, high-statistics simulations at several lattice spacings and gradient-flow times, providing the first nonperturbative data in this previously inaccessible regime. We discuss the impact of these results on Born–Oppenheimer effective field theory predictions of conventional and hybrid quarkonium.

Presentation materials

lattice2026_VilijadeJonge.pdf