Jun 2 – 7, 2019
Carnegie Mellon University
America/New_York timezone

Spectroscopy from the lattice: the scalar glueball and K-pi scattering

Jun 6, 2019, 5:00 PM
Rangos 2

Rangos 2

Contributed Hadron Spectroscopy Hadron Spectroscopy


Ruairí Brett (Carnegie Mellon University)


Lattice calculations allow us to probe the low-lying, non-perturbative spectrum of QCD
using first principles numerical calculations. Here we present the low-lying spectrum
in the scalar sector with vacuum quantum numbers, including in fully dynamical QCD for
the first time the mixing between glueball, q-qbar, and meson-meson states.

As lattice calculations are necessarily restricted to finite-volume, we want to connect
the spectrum of QCD in a cubic volume to infinite-volume resonance parameters.
For this, we apply Lüscher's formalism for relating stationary state energies in
finite-volume to the infinite-volume scattering matrix to elastic K-pi scattering, where
the partial wave mixing induced by the finite-volume is included for $\ell < 3$.

Graduate Student Yes
Early Consideration No

Primary author

Ruairí Brett (Carnegie Mellon University)

Presentation materials